I am having same problem using the Acer Chromebook 14 Gold Aluminium connected to external LCD via HDMI. I running on version 59.0.3071.47 (Beta channel).  

There is no progress since version 57 where I captured this problem for first time. 

Acer Chromebook14 CB3-431 brand new out of the box, after owning an original Samsung Chromebook for 4 years and no issues, I sold it to my friend and "upgraded" to this thinking better processor, more RAM, and a bigger display with 32GB strorage would be great!....NOT.. nothing but issues.. very disappointed.. may go back to Windows PC or laptop at this point.

This screen blackout issue really makes me wonder if Google and Chromebooks ever will be as good as owning a "real" computer.

With latest Chrome OS upgrade I can close the lid and keep working in my
monitor. Give it a shot.

Version 60.0.3107.0 dev (64-bit)
Platform 9582.0.0 (Official Build) dev-channel terra
ARC Version 4034623
Firmware Google_Terra.7287.154.80

@82, thanks for the heads-up. I'm at the same version, platform, ARC.

I've had my Lenovo N22-20 up and docked to my 23" HDMI monitor for over 6 hours now with no screen jitters or blanking screen. I used it @ 2.5 hours, then walked away for a couple of hours, then just hit the keyboard space bar to bring it back. I have been back on for about 3 more hours with a clean crisp display.

I did my Outlook for Android app that always seemed to cause the issue while playing some tunes while doing the usual email, surfing & opening a dozen tabs, etc.

Hopefully the fix is now in Dev and maybe it can make it into Stable 59? Please check it out and report back so 'the crew' can know if it is fixed for you.

I have an ASUS ChromeBox with two monitors. The primary monitor is a highend DELL and from time to time, when I wake from sleep, the primary remains black and the secondary wakes normally. The keyboard and mouse thinks the screen is visible. 

Also reporting an issue with Acer Chromebook R11.

It's been months now, has there been any progress?

Also running an Acer R11 and experiencing the exact behavior described here. Is there any data I can provide to help move this along?

Yesterday was bad 6-21-17. The screen on my monitor would go black about every 10 minutes. 
Today I have been on the HP chrome book for about 3 hours with no concerns. The screen did shift 2 time and the screen blanked for approx 2 seconds. I checked and am at current OS. Maybe is fixed as this is the longest that the monitor has been stable since Christmas. Was so sick of this crap ordered a new laptop should arrive next week. Just my luck  Cheers

Not sure if this is related, unrelated, or perhaps a side effect of the fix. After an update to version 59.0.3071.91 on an Acer Chromebook 14 CB3-431 the HDMI video output goes to a single RGB color after a variable period of time. Audio continues. The color displayed on the remote screen will be one of the colors seen on the screen at the time the video is lost. This occurs both in mirrored and extended screen modes. The single color fills the screen. Note that this change to a single color occurs only after a variable amount of time, ten to twenty minutes. This behavior did not occur prior to 59. If this seems to be unrelated, then perhaps I should file a bug report as I cannot find anything similar to this behavior in the list of known issues.

@88, seeing your comment, I decided to try connecting my HDMI monitor to my Lenovo N22 again and closing the lid to be in docked mode. At first, it seemed to be work and I went about 30 minutes seeing it tear a couple of times, but then I had to go do something. I left it with the external monitor still operating properly.
I came back to it about an hour later to a blank screen, clicked the mouse button and it came alive--Nice!
I ran it for another hour or so and saw the screen tear a few more times, but it held sync. Until it didn't.
So, on Stable channel, it is still 'broken'. This sure is taking a l-o-n-g time to get fixed. Maybe non-Intel chips/CBs is the solution?

i'm having similar issue with asus chromebook, lg monitor, logitech keyboard and mouse.  repeatedly pressing the escape key with chromebook in docked mode caused white blank screen in my case.  temporary work around is to not to use dock mode leaving the laptop in almost covered mode.  no issue so far even with repeated escape key presses.

i switched to beta channel and it worked for me.  docked mode with repeated escape key presses did not crash my chromebook.  maybe you should give it a try too if you have similar issue.

Acer R11, symptoms very much the same

Any fixes on this issue? I have had this problem for months now on my Samsung Chromebook and LG Ultrawide Monitor. 

I tried a variety of things, including a chrome extension that should leave
it on always, nothing worked.  Then I saw a suggestion from a user that
he/she went to settings/accesibility, and changed the mouse cursor to
"Large".  It worked!  Don't ask me why, but I haven't had a problem (other
than a huge cursor) since.  As a final test, I wnt back to the normal
cursor and the problem reappeared.  Switched back to the large mouse cursor
and everything worked.  Please let me know if this works for you.

As a side note, my "research"/Google searches indicated the following
commonalities and differences:

1.  All problems I saw were on chromebooks with touchscreens.
2.  It is not manufacturer specific.
3.  It is not screen size specific.
4.  Several suggestions in various fourms suggested updating to the latest
Chrome OS and included a minimum version number.  My version was already
newer (and the latest)
5. Some suggested adding the Chrome extension "Keep Awake".  It didn't help
(on my Acer R11).

I can't believe it's been almost 2 years and this bug is still common place. I literally bought this device with it's sole purpose to stream HDMI video to my TV, and for the first 30 days it worked fine. It wasn't until after my return period ended did the problem arise! Now I am stuck with this garbage computer that will periodically stop displaying video and the only way to fix it is to restart the entire machine, log back in, go back to find whatever I was watching, and then find the spot where I left off... Absurd!

I am not even going to elaborate on the specifics of the problem since it's been detailed to death as described in this and many other threads. Just know that I have the problem and it NEEDS TO BE FIXED!

I agree it's past time for this to be fixed.  Meanwhile, Try changing to a
large mouse pointer in your accessibility settings as a work around.
That's worked for me and several others on this forum and hopefully points
the developers in the right direction.

I'm having the same issue with the new Acer R11 with the N3160 processor. Should I leave this here or create a new issue due to the hardware difference.

Version: 59.0.3071.91   
Channel: Stable
Firmware: Google_Cyan.7287.57.100

Tried the cursor workaround - Did not work

I would like to report that my Acer R11 is having the same issue with an LG 24M45 monitor.

Version 58.0.3029.140 (64-bit)
Platform 9334.72.0 (Official Build) stable-channel cyan
ARC Version 4015103
Firmware Google_Cyan.7287.57.100

I would like to report I am having the same issue with my Chromebook 11 connecting to my LF monitor via a HDMI port.

The monitor works as expected until I switch my Chromebook into dockmode and shortly (20 seconds - 2 minutes) the monitor goes blank but is not in sleep mode as has been described in the previous comments.

OS version: Version 59.0.3071.134 (Official Build) (64-bit

I just bought an ASUS Chromebox. I am using an HP W2082a monitor. The monitor works fine. But, when I sign into my google account, the screen goes black, then the account resets. This happens 3 times. Then, on the fourth reset, the Chromebox restarts with my account signed out. Then, everything is stable until I try to sign in again.

Hello!

All of a sudden, neoter of my chromebooks will extend to two external monitors I have. The specs on the chromebook I am currently using are listed below (the other is an ASUS C100 Flipbook with 32bit and new version of the os).

The first monitor was a Samsung Syncmaster SA350. Worked fine for several months (even though it said it was 'not playing nicely' - but it did) then, all of a sudden, no extension.  I thought maybe the monitor was tool old. Yesterday, I bought a Samsung C32F391FWN (32" curved) and am using the HDMI cable supplied with the monitor (the flip has mini hdmi to hdmi which is why i am using this older Samsung Chromebook). 

Extension will work properly sometimes. On every occasion, when I plug the cable into the chromebook, the notification pops up in the bottom right acknowledging the monitor model number. The variation is at this point: 

(1) sometimes it will then display the extension and i can close the lid on my chromebook and use my ext keyboard and mouse for a while, until the external monitor will go all blue or gray and will not go back until I unplug the HDMI from the chromebook 

OR

(2) the monitor will remain black except the monitor info pop up of 'HDMI' and menu for a brief moment. The mouse clear goes into a dark abyss from the chromebook screen. so there is 'space' , but no picture.

And on the  asus c100p flip. when i plug in the micro hdmi to hdmi, the computer recognizes the monitor, and there is an extension, as the windows disappear from the chromebook monitor, and the mouse goes into the same abyss, but the screen is not only blank, the power indicator light starts to blink as if nothing is plugged in.

Deleted: IMG_8193.JPG 14.3 KB

	IMG_8193.JPG 14.3 KB View Download

The same problem happens if the chromebook connected to an external display goes into idle mode when in docked mode. When trying to wake up again by using keyobard og mouse nothing happens. You have to start the chromebook all over again to get picture on the external screen.

Reporting the same problem on an Acer Chromebook 14. This issue is unbelievably frustrating, and solidified my decision this is the first and last Chromebook I'll purchase.

No disrespect intended to the fine folks who fix bugs, but it's just a few more weeks until this bug celebrates its one year birthday. It's a year without a fix, and I'm sure the bug fixers are hard at work fixing this, but respectfully, they should consider posting an update on their progress before the one year birthday comes and goes. Otherwise folks might mistakenly believe nobody's working on this bug.

My Acer R11 Chromebook. It seems to work now. I have worked an entire day without an issue. I do not know what to attribute it to however. 

Having gone through a flurry of updates recently, I decided to retest the screen blacking out problem.  Previously, I followed advice from another user on this forum and switched to a large louse cursor which seemed to work (for months).  I disabled the large mouse cursor (accessibility functions) and my Acer R11 chromebook now works just fine.

@103, Mike.cha...@live.com: One option would be to buy a non-Intel Chromebook because it appears this is an Intel-related issue. My Samsung Chromebook Plus has no issues when docked.

@106: Thanks for the info. I'll have to connect my Lenovo N22-20 back to my monitor and give it a try. Last time I did, about a month or more ago, it worked solidly for several hours one day, but the next day it started getting that occasional 'jitter' that led to a blank external monitor after a couple of hours.
I've noticed that if I see the screen jitter/jump/break for a split second that it will eventually go dark after this happens a few times. I still believe it is a sync issue.

Well, I've had my Lenovo N22-20 Chromebook docked with the lid closed the last three days and have not had a single blank or even jittery screen. It's been very solid--like it is supposed to be.

I was first on the Beta OS, 61.0.3163.117, but switched to Stable yesterday when I learned it now has Night Light in Flags. Unfortunately, after the Powerwash, it is at 60.0.3112.114 instead of 61.0.3163.113.
On the Plus side, though, it is rock steady on the latest v60 version of the OS.

Brand new Acer Chromebook 14 with same problem. Please fix.

Ditto!

Platform
10032.86.0 (Official Build) stable-channel edgar
Firmware
Google_Edgar.7287.167.71
Channel
Currently on stable
CHANGE CHANNEL
ARC Version
4524559
Blink
537.36 (@)
V8
6.3.292.49
User Agent
Mozilla/5.0 (X11; CrOS x86_64 10032.86.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.140 Safari/537.36
Command Line
/opt/google/chrome/chrome --ppapi-flash-path=/opt/google/chrome/pepper/libpepflashplayer.so --ppapi-flash-version=28.0.0.137 --ui-prioritize-in-gpu-process --use-gl=egl --enable-native-gpu-memory-buffers --gpu-sandbox-failures-fatal=yes --enable-logging --log-level=1 --use-cras --enable-wayland-server --user-data-dir=/home/chronos --max-unused-resource-memory-usage-percentage=5 --disable-lock-screen-apps --login-profile=user --has-chromeos-keyboard --default-wallpaper-large=/usr/share/chromeos-assets/wallpaper/oem_large.jpg --default-wallpaper-small=/usr/share/chromeos-assets/wallpaper/oem_small.jpg --default-wallpaper-is-oem --guest-wallpaper-large=/usr/share/chromeos-assets/wallpaper/guest_large.jpg --guest-wallpaper-small=/usr/share/chromeos-assets/wallpaper/guest_small.jpg --enable-consumer-kiosk --arc-availability=officially-supported --enterprise-enrollment-initial-modulus=15 --enterprise-enrollment-modulus-limit=19 --login-manager --policy-switches-begin --enable-features=MaterialDesignExtensions --policy-switches-end --first-exec-after-boot --vmodule=*arc/*=1,tablet_power_button_controller=1,*chromeos/login/*=1,auto_enrollment_controller=1,*plugin*=2,*zygote*=1,*/ui/ozone/*=1,*/ui/display/manager/chromeos/*=1,*night_light*=1,power_button_observer=2,webui_login_view=2,lock_state_controller=2,webui_screen_locker=2,screen_locker=2 --enable-features=MaterialDesignExtensions
Build Date
Tuesday, January 9, 2018

Seems related to YouTube?!...

p.s., If this isn't fixed within the next month, I'll be forced to return my new Chromebook to Amazon, and go back to shitty Microsoft Windows...your ball!

After you reproduce it, please file feedback through Shift+Alt+i and mention crbug.com/677332#c110 in the comment section.

Happy birthday, Bug! This bug is a year old now. Check post number one above — it’s dated January 2017. Google should just admit they’re not going to fix this bug. Making all these people report the same bug again and again for a year is just so unfair to people in my humble opinion.

@patr,  Actually, It's even older: https://productforums.google.com/forum/#!topic/chromebook-central/WGW6CJFSFzY was posted June 3rd, 2016.

I have an Acer "Chromebook 14 for work CPS-471" that is also creates loss of signal incidents to a 46 inch 1080P Westinghouse LD-4268 monitor via HDMI.  The loss of signal can be either temporary for 5-10 seconds or permanent requiring a disconnect/connect cycle of the HDMI cable to restore signal.  The Chromebook settings show the connected external monitor for short duration loss incidents and show no external monitor at all for permanent incidents. A feedback using shift+ALT+i will be sent. at the next incident and a few after that.

Still doing it...

hi google,
SHIT did hit fan again -;)
ver64/167

SCR disconnected [ 19th time ] again while play youtobe videos [ mostly short music of ~4 min long ], after about 7 min of play & about 2 min of last mouse activity,

no fix, no reply from you !!!
SCR went off again while youtube play videos, this chromebook BUG is persistent day after day, it SHALL & MUST be fixed ASAP !!!
I do not observe that behaviour when play NON-YOUTUBE content !!!

set-up to reproduce
--------------------
-chromebook & hdmi TV set to mirror,
-reduce brightnes on chromebook to 0,
-chromeOS quit mirror set,
-hdmi TV is prime SCR & display pic,
-play youtube vid at 1080p [ after sign in to youtube as chromebook member ],
-I did do hose-keep of LIKE VIDEOS list - continued keybord & mouse use !!!
-after ramdom time - here about 3 hrs of play - TV is not displaying video,
-chromebook continue to play vid [ sound & picture ],
-increase chromebook brigthes to max, chromebook is OK [ sound & pic ], TV in on but no REAL video MIRROR pic,
-I see that TV is connected to chromebook & is receiving signal, but signal is not REAL VIDEO which is played on chromebook,
-TV will show NO SIGNAL msg on scr when TV is mot receiving signal on HDMI cable, here TV is receiving signal on hdmi cable, but signal is wrong,

thanks, fresh clean
=====================

Similar issue here. Have dual monitors connected to Lenovo USB-C dock via my Thinkpad 13 Chromebook. Monitors continually flicker from Displayport to seaching/black screen and then come back on. I have another non-chrome OS laptop that I have connected to the same exact setup (usb-c dock/monitors) and there are no issues whatsoever. 

Platform
10176.72.0 (Official Build) stable-channel sentry
Firmware
Google_Sentry.7820.314.0
Channel
Currently on stable
ARC Version
4600522
Blink
537.36 (@)
V8
6.4.388.45
User Agent
Mozilla/5.0 (X11; CrOS x86_64 10176.72.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36
Command Line
/opt/google/chrome/chrome --ppapi-flash-path=/opt/google/chrome/pepper/libpepflashplayer.so --ppapi-flash-version=28.0.0.161 --ui-prioritize-in-gpu-process --use-gl=egl --enable-native-gpu-memory-buffers --gpu-sandbox-failures-fatal=yes --enable-logging --log-level=1 --use-cras --enable-wayland-server --user-data-dir=/home/chronos --max-unused-resource-memory-usage-percentage=5 --login-profile=user --has-chromeos-keyboard --default-wallpaper-large=/usr/share/chromeos-assets/wallpaper/default_large.jpg --default-wallpaper-small=/usr/share/chromeos-assets/wallpaper/default_small.jpg --child-wallpaper-large=/usr/share/chromeos-assets/wallpaper/child_large.jpg --child-wallpaper-small=/usr/share/chromeos-assets/wallpaper/child_small.jpg --guest-wallpaper-large=/usr/share/chromeos-assets/wallpaper/guest_large.jpg --guest-wallpaper-small=/usr/share/chromeos-assets/wallpaper/guest_small.jpg --enable-consumer-kiosk --arc-availability=officially-supported --enterprise-enrollment-initial-modulus=15 --enterprise-enrollment-modulus-limit=19 --login-manager --first-exec-after-boot --vmodule=*arc/*=1,tablet_power_button_controller=1,*chromeos/login/*=1,auto_enrollment_controller=1,*plugin*=2,*zygote*=1,*/ui/ozone/*=1,*/ui/display/manager/chromeos/*=1,*night_light*=1,power_button_observer=2,webui_login_view=2,lock_state_controller=2,webui_screen_locker=2,screen_locker=2
Build Date
Tuesday, February 13, 2018

64.0.3282.167 still broken, AND...Remote Desktop stopped working TOO!  Congratulations Chrome OS Dev on not testing your release, before releasing it!

https://www.calculatorsoup.com/calculators/time/age-calculator.php

It's zero-blank-twenty-five, and Maya is reminding you still haven't caught External Be-lank-screen.:

Exact Age of bug: 677332
= 1 years 9 months 3 days
= 21 months 3 days
= 641 days

https://productforums.google.com/forum/#!topic/chromebook-central/WGW6CJFSFzY

WTF are these 2 comments about & mean to address ?
comment #124 & #125 by marc...

it is how youtube & google fixing SERIOUS issues ?
almost 2 years old [ RANDOMLY occurring ] problem / bug & no fix or attendance to problem, why not ?

I reported ISSUE / PROBLEM / BUG on several accessions by official CHROME OS ISSUE reporting facility, nobody contacted me back !!!

theoretically [ let assume that 100 % ] RANDOM problems do not occur [ surface ] because of mistake in programming, 

when programming mistake is made, problem will be reproduceable ALL TIME EVERY TIME when leading sequence will occur, here PROBLEM occur or not occur [ at random ] therefore problem is not result of programming mistake but DELIBERATE youtube / google intention to make problem RANDOMLY be visible - such RANDOM PROBLEM generator [ based on some specific LOGIC ] is very simple to make !!!

when such RANDOM PROBLEM GENERATOR is activated, RANDOM PROBLEMS start to occur, 

how frequently ?
it is up to PROBLEM GENERATOR logic - every day, every hour, every week or so to say !!!
to whom ?
again, it is up to PROBLEM GENERATOR logic too !!!

because this problem was not practically attended for almost 2 years, it seems that youtube / google has INTEREST that PROBLEM GENERATOR is not removed,

I would like that youtube / google people comment on above made ASSUMPTION -;)
=====================
thanks, fresh clean

Weidongg@ to triage the issue in bug description: external monitor blacking out in docked mode. 

Re other issues, including docking stations - please report them in separate bugs. 

in relation to comment #127 content,
=====================================

1- BUG has RANDOM occurrence, therefore it is not programming mistake,

2- BUG is not BLANKING external TV but is stopping to display what TV was displaying, PC continue to display [ when brightness is increased to any value except ZERO ] & sound content,

3- when TV is stopping to display what TV was displaying, TV scr colour is set RANDOMLY to any colour [ including BLACK ], but TV is reporting to receive signal from PC, 

4- TV continue to be connected to PC & TV is receiving signal from PC [ when TV has no signal on/from HDMI, TV would report on scr; NO SIGNAL ],

5- BUG has occurrence on TV connected by HDMI to PC, as TV is not MONITOR,

I hope that my above comments shall clarify mis-understanding of this RANDOM BUG -;)
=======================
thanks, fresh clean

It ONLY happens watching 1 hour our less of Youtube video.  It NEVER happens on Hulu, Netflix, VLC, etc...!  So NO!  IT IS NOT RANDOM AT ALL!

             F....I....X     I....T    !

more testing to recreate BUG,

hardware set-up to reproduce problem
======================================
TV is 50in 1080p panasonic,
PC is ACER Chromebook 14 (CB3-431) with 1080p scr,
mirror PC & TV by HDMI cable [ when boot-up TV say; mirror to TV 1080p/60 Hz ],
login to PC [ chromebook ] by OWNER account,

in PC SET-UP page for DISPLAY [ my preference -;) ]
====================================================
say; mirror internal display, internal display resolution 1080p [ best ],

in PC SET-UP page for POWER [ my preference -;) ]
==================================================
When idle; keep display ON,
Sleep when lid is closed; DISABLED,

PC set-up for accessibility [ my preference -;) ]
==================================================
large mouse cursor; ON,
highlight mouse cursor; ON,

USING extension [ always is ON ]
=================================
uBlock Origin 1.15.2

PC chrome OS
=============
Version 64.0.3282.190 (Official Build) (64-bit)
Platform; 10176.76.0 (Official Build) stable-channel edgar
Firmware; Google_Edgar.7287.167.96
Build Date; Sunday, 25 February 2018

START to use PC & recreate PROBLEMS ]
=====================================
- check google account email [ no log-in required ],
- log-out from google account & all sessions [ if any ],
- open youtube tab in chrome browser as VISITOR [ without sign-in to google account ], 
- select video to play in full SCR 

for all test runs
==================
- no user interaction with PC [ no mouse or/and keyboard use - just watch video on both screens; PC & TV ]

VPN Technology Course Day 1
https://www.youtube.com/watch?v=KY0mGpVo9Ak
[ video is 1h49m duration & has max 720p resolution ],
1st run
after 5m53s TV stopped to display VIDEO but continue to play video SOUND & video played on PC,
TV went in to RANDOM colour, PC continue to play VIDEO [ sound & picture ], TV continue to receive signal from PC over HDMI cable,
2nd run
did not get problem on same video in 54m48s, problem did not occur !!!

Psychedelic Trip Music And Visuals 2018 (HD) PART 4
https://www.youtube.com/watch?v=ccNd34WfMkI
[ video is 28m duration & has max 1080p resolution ],
after 1m28s TV stopped to display VIDEO, TV sound played as normal !!!
TV went in to RANDOM colour, PC continue to play VIDEO [ sound & picture ], TV contione to receive signal from PC over HDMI cable,

What DMT is like - DMT Trip Simulation (1080p)
https://www.youtube.com/watch?v=9UcKhas3HCk
[ video is 2h03m duration & has max 1080p resolution ],
after m26s TV stopped to display VIDEO, TV sound played as normal !!!
TV went in to RANDOM colour, PC continue to play VIDEO [ sound & picture ], TV continue to receive signal from PC over HDMI cable,

Paul Kalkbrenner - Sonar Festival Set 2013 [LIVE-SET] + Visual effects in HD - FREE DOWNLOAD
https://www.youtube.com/watch?v=-N0NEGGigd8
[ video is 1h29m duration & has max 1080p resolution ],

special config for this video - different test;
I disabled youtube sound & stream [ play ] music from spotify in 2nd TAB,
after 5m20s TV stopped to display VIDEO, streamed sound from spotify played as normal !!!
TV went in to RANDOM colour, PC continue to play VIDEO [ sound & picture ], TV continue to receive signal from PC over HDMI cable,
=======================
thanks, fresh clean

in relation to Comment 129 statement,
=====================================

I shall say before more clearly, I'm sorry, my fault -;)

RANDOM OCCURRENCE when STREAM youtube video, as I did not find that BUG when PLAY MY VIDEO [ from USB ] or when STREAM video from other source [ let say PORNO site provider -;) ],

to put MY RANDOM statement to rest
====================================

RANDOM when STREAM / PLAY YOUTUBE [ google own company ] VIDEO !!!
=======================
thanks, fresh clean

additional info that shall help youtube / google people to fix problem
=========================================================================

I would like to mention that NOW [ v64/140 & 190 ] chromeOS is NOT DISPLAYING notification telling user that PC is in DOCKED MODE & user can continue to use PC even when LID is CLOSED,

see this video Published on Jan 19, 2017 [ at about 0m40s MSG is on scr telling that notification - old ver of chromeOS ]
https://www.youtube.com/watch?v=W9ndcruTs34
How to setup docked mode (Chromebook)

google did change chromeOS & removed DOCKED MODE [ & notification ] long time ago,
=======================
thanks, fresh clean

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another different take on this problem [ GOOGLE SHIT ],
=======================================================

installed APP [ NOT EXTENSION !!! ] on chromebook to play youtube videos OUTSIDE chrome web browser, I selected;

iPrevYou - YouTube™ Player - Chrome Web Store.mhtml
https://chrome.google.com/webstore/detail/iprevyou-youtube-player/blijlgfnjhnhmnaldaiienmjggbjhbaa

which is equivalent to apple safari picture-in-picture player to play youtube videos outside web browser - it is APP & not browser extension,

started to play music videos & after several min [ about 20 min ] BUG [ 677332 ] did surface again,

except installation of that APP, all set-up on my chromebook did remain same, therefore, I'm reaching [ it is my assumption -;) ] conclusion that it is YOUTUBE [ google own company ] VIDEOS future implemented by GOOGLE to annoy VIP google supporters - CHROMEBOOK VIP USERS !!!

obviously, I may be wrong with my assumption [ conclusion ] & I will apologise for my assumption, unless google can prove OTHERWISE -;)
=======================
thanks, fresh clean

Since my initial submittal - Comment 117 by scotth1894@gmail.com, Feb 16 - I have sent numerous "Shift-Alt-i" reports.  Are these helpful?  

BTW a co-worker using a Chromebook 14 has the same issue occurring using the HDMI port.  He is using multiple vendors of monitors all of which newer models than what I show - both larger and smaller size. So the issue seems to be video support.

additional info that shall help youtube / google people to fix problem
=========================================================================

I did play youtube music videos in;

- normal TAB & 
- incognito TAB

same problem existed in both, after random time elapsed since starting to play my test playlist, BUG [ 677332 ] did surface again, that test was done after LOGIN to account, and than I selected to play offered music videos without login to my account, again same problem did occur irrespective of login or without,

I did another test to play - almost same / identical music videos but this time from;

- chromebook internal storage, and
- external USB disk,

after more than 60 min of play of each selection, BUG [ 677332 ] did not BLANK / did not stop to display video, on my external TV !!!

BUG [ 677332 ] is stopping to display video on external TV connected by HDMI cable only when play videos from youtube, and stopping to display videos is occurring after RANDOM time elapse from starting to do it !!!
=======================
thanks, fresh clean

additional STEPS I did make to eliminate / fix youtube / google BUG [ 677332 ]
================================================================================

1st I did
==========

Reset your Chromebook to factory settings
https://support.google.com/chromebook/answer/183084

RESET did not fix problem; to stop to display YOUTUBE [ music ] videos, on my external TV, RANDOMLY occurring stop to display YOUTUBE [ music ] videos resurfaced again in same / identical fashion !!!

2nd I did
==========

Recover your Chromebook
https://support.google.com/chromebook/answer/1080595

RECOVERY did move me back to older ver, than I UPDATED MANUALLY chromeOS to current v64/190,

RESET did not fix problem; to stop to display YOUTUBE [ music ] videos, on my external TV, RANDOMLY occurring stop to display YOUTUBE [ music ] videos resurfaced again in same / identical fashion as before RECOVERY !!!

CONCLUSION
============

BUG [ 677332 ] is stopping to display video on external TV connected by HDMI cable only when play videos from youtube, and stopping to display videos is occurring after RANDOM time elapse from starting to do it [ play ], BUG [ 677332 ] is present even when DRASTIC STEPS I made to FIX it [ GOOGLE SHIT ] such as;

- resetting of my chromebook to factory settings, and
- recovery of my chromebook from fresh downloaded chromeOS to USB disk,
=======================
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additional tests
=================
all my tests are confirming RANDOMNESS fact of occurring of that BAG [ 677332 ] - random time interval [ from start of play youtube videos ] to external TV connected by HDMI cable, to moment when TV is losing VIDEO signal but play video sound well on TV,

test #1
========
I did play about 12 music videos [ from PLAYLIST ] for about 2 hrs & 30 min, TV did not lose VIDEO signal for 2 hrs & 30 min, I did not encounter ISSUE !!!

test #2
========
I did play different 13 music videos & TV did lose VIDEO signal after 
about 1 hr & 5 min,

test #3
========
I did play 37 different music videos for about 3 hrs & 20 min, and TV did not lose VIDEO signal

conclusions
============
these 3 tests of play youtube music videos are confirming that bug is occurring after RANDOM interval of time from start of play, all 3 tests did RUN from PLAYLIST of about 270 music videos,
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AUTO updated chromeOS to ver 65/184 [ stable ] on my ACER platform, 
and guess what ?

GOOGLE SHIT [ BUG 677332 ] did hit fan again yesterday !!!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

test #4
========
did play youtube [ 1080p ] music videos from playlist, and at 9th music video HDMI connected TV stopped to display video & SCR went green, BUG did occur about 45 min from start of play my extensive playlist [ I started play from #71 ],

as you all may see from my last 4 tests [ 4th test in just released stable ver 65/184 couple of days ago ], GOOGLE SHIT [ BUG 677332 ] is surfacing after RANDOM interval time from start of play !!!

and no GOOGLE fix or even attempt to fix it since ver 55/103 [ current ver is 65/184 ] - almost 2 years ago !!!
=======================
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Still a problem!: 66.0.3359.79

+yihsin@, is this WAI on youtube side for comment #136 ?

Interestingly enough, i don't experience this on my acer 14 chromebook, but i do experience the issue on an chromium installation on my old samsung series 5 ultra laptop:

Here are their configurations: 
https://gist.github.com/coderofsalvation/0399ba9ed05f7c08550d6e6d4c6d0582

additional tests
=================
I did play YT music videos from my long playlist of 282 songs, I did start from #70 & I did stop manually [ my req to stop play ] at #155 - 85 music videos nonstop play for about 5hrs & 50min - GOOGLE SHIT [ YOUTUBE service BUG 677332 ] DID NOT hit fan again, all went smoothly to end -;)

therefore, all my tests are confirming RANDOMNESS fact of occurring of that BAG [ 677332 ] - random time interval [ from start of play YT ] to external TV connected by HDMI cable, to moment when TV is losing VIDEO signal but play video sound well on TV,

therefore, all my tests are confirming that it is NOT SOFTWARE BAG in chromeOS or/and in youtobe service, but INTENTIONALLY introduced youtube service future to channel FREE customers into PAID service !!!

prove that I'm wrong & I will APOLOGISE PUBLICLY for made by me assumptions / allegations !!!
=======================
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additional tests
=================

test #6 [ 3 short tests one after another ]
============================================

I did play YT music videos from 3 different & short playlists, when uninterrupted play from playlist ended, I used keyboard/mouse to interact with chromebook, therefore I may see this test as 3 independent & shorter YT not-interrupted play tests,

for this test I did use my old previous chromebook I ditched years ago - lenovo 11in, before YT play test I updated chromeOS to current ver [ Version 65.0.3325.209 (Official Build) (64-bit) ], for this test I did use same;

- panasonic 50in FHD TV, and
- HDMI TV cable,
- mouse & keyboard too,

I'm normally using LARGE CURSOR with highlight mouse cursor set to ON,

additionally I'm MIRROR PC SCR to TV, then I'm setting PC SCR brightness to ZERO, 

under chromeOS set-up for POWER, I'm using;

- when idle I'm using KEEP DISPLAY ON, and
- sleep when lid is closed I'm using it [ is set ] to OFF,

when using chromebook [ including this test & all my previous tests ], I'm always using it with LID CLOSED, I did play music videos from my 3 lists;

1st- 15 non-stop movies, about 60 min not interrupted play
2nd-  9 non stop movies, about 30 min not interrupted play
3rd- 17 non stop movies, about 70 min not interrupted play

GOOGLE SHIT [ YOUTUBE service BUG 677332 ] DID NOT hit fan again, all went smoothly to end - total play time; about 2 hrs and 10 min -;)
=======================
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additional test
================

test #7
========

I did play YT music videos from playlist that has 18 music videos on my main chromebook [ acer 14in ], no keyboard/mouse was used to interact with acer chromebook when YT play was on, that chromebook is running latest chromeOS [ v65/209 official 64 bits build ] & test did use same setup as before;

- panasonic 50 in FHD TV, and
- HDMI TV cable, and
- external mouse & keyboard,

I'm normally using LARGE CURSOR with highlight mouse cursor set to ON, additionally I'm MIRROR PC SCR to TV, then I'm setting PC SCR brightness to ZERO, under chromeOS set-up for POWER, I'm using;

- KEEP DISPLAY ON [ when idle ], and
- OFF to [ sleep when lid is closed ],

when using any chromebooks [ including this test & all my previous tests ], I'm always using it with LID CLOSED,

GOOGLE SHIT [ YOUTUBE service BUG 677332 ] DID NOT hit fan again, all went smoothly to end of playlist of 18 videos in non-stop play for about 1 hr & 15 min !!!

WTF is going on now ?
~~~~~~~~~~~~~~~~~~~~~~

no more GOOGLE SHIT [ YOUTUBE service BUG 677332 ] - at least so far for now on my lenovo [ old one ] & acer [ recently new one ] chromebooks -;)

I did notice that 5 [ five !!! ] GOOGLE / YOUTUBE staff are attached to this BAG & nobody is willing to tell [ at least officially ] WTF is going on for past [ almost 2 years ] with this PROBLEM !!!
=======================
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Still a problem: 66.0.3359.102

For now, until this issue is fixed, please have YouTube just switch the default player back to FLASH!  Yes, you want to move away from FLASH, and you can take all the time you need to figure out why HTML5 is heating up the video circuit to external HDMI devices, but for now...please at least end the pain on the customers' side!

additional test
================

test #8
========

did play 17 YT videos [ about 80 min total time ] without any keyboard or/and mouse interruption, I did use for this test 720p YT video resolution to FHD TV [ but TV was set to 1366x768 pix ], additionally I did use VPN openVPN protocol to connect to VPN server then to YT, router was set to limit fibre internet download speed to max 9 Mbps, chromebook used was lenovo 11in one - old but OK for 720p video play, VPN was used [ set-up ] on chromebook by ONC openVPN protocol config imported file, instead as normally I'm using; on very fast router,

rest of my set-ups was as before,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

for about 1 hr & 20 min of non-interrupted YT play, I could not reproduce GOOGLE SHIT [ YOUTUBE service BUG 677332 ], all went smoothly to end of playlist -;)

WTF is going on now ?
~~~~~~~~~~~~~~~~~~~~~~

I see that for past couple [ several ] YT plays - all my tests longer that 1 hr - and conducted on two completely different chromebooks [ old; lenovo & new; acer ]  connected to same 50in TV by HDMI cable, I could not reproduce YOUTUBE service BUG 677332 !!!

in past I could not play [ normally ] for longer than 30 min [ random length of play time from start ] to not reproduce this bag, but not any more -;(

WTF is going on ?
=======================
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Still a problem: 66.0.3359.117

additional 2 tests to play long videos under YOUTUBE service
==============================================================

I did use same set-up as before;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 720p scr & TV & videos played,
- mirror to TV, than scr brightness set to zero,
- chromebook lid closed,
- large cursor,
- HDMI cable to TV,
- external keyboard & mouse,
- play videos while logged in as google user,

test #9
========

I did play YT [ youtube ] music video [ concert 1h46m long - 1 mouse/keyboard interaction in middle of play ], 720p on old lenovo chromebook, I could not reproduce YOUTUBE service BUG 677332 !!!

test #10
==========

I did play YT [ youtube ] music video [ concert 2h16m long - 2 mouse/keyboard interaction in middle of play ], 720p on old lenovo chromebook, I could not reproduce YOUTUBE service BUG 677332 !!!

my conclusions
~~~~~~~~~~~~~~~~

YOUTUBE service BUG 677332 is no longer present !!!
=====================================================

as far as I see, YOUTUBE clandestinely [ surreptitiously at least ] did switch off they future to RANDOMLY stop delivering VIDEO signal to HDMI cable connected TV, therefore outcome is good !!!

no more YOUTUBE shit of intentionally generated to chromebook users [ GOOGLE VIP customers !!! ] anying YOUTUBE video playback problems -;)

[ this BUG 677332 was not & is not present when I did and/or do play any VIDEO from any other source other then YOUTUBE on my two different CHROMEBOOKS [ old; LENOVO & new; ACER ]
=======================
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Still a problem: 66.0.3359.137

How can we contact the YouTube-folk?  If you Chrome-folk can't fix this, how about we go to the source of this problem?  This issue is getting more than a little old, and I'm sure you guys are getting sick and tired of us gnawing on your asses!  Almost as sick as we are of suddenly having to reboot our computers while simply trying to view a few YouTube videos!  How about teaming up to conquer this stupidity?!

I would put it back to triage to be assigned to people with better knowledge.

Acer Chromebook 14 here, same issue.  The large accessibility cursor workaround does NOT work for me.

External monitor flickers randomly, usually after 3-4 hours of use, running extended not docked. 

Flickers for up to 20 seconds, each blank taking 0.5 - 3 seconds. Machines recover and are often fine for the rest of the working day.

Three Acer 14" Chromebooks all with latest stable update. Different external monitors and cables, no additional software/plugins/extensions.

Not trying to watch YouTube but may be loaded as part of one or more tabs.

I'm sure this will be fixed soon as Google has a longstanding commitment to quality and support.

(Bulk Edit) Adding the new conops Chrome OS hotlist to all open issues with the "#CBC-RS/TC-watchlist" tag, our former tracking tag.

After lowering Resolution to 768P, this issue had stopped; until 68.0.3440.40 (Official Build) beta (64-bit) caused it to recur on Netflix!  Instead of improving / fixing this bug, it looks like it's somehow been extended to types of streaming outside of YouTube, and even into display settings with lower resource requirements! WTF!

My Pixelbook randomly blacks out and reboots with external monitor docked. There appears to be nothing initiating the blackout and reboot. This is occurring on the Stable channel with version 67.0.3396.99 and the version prior to this.

All I did was reorder a HDMI cable because I needed one 
after getting it hooked up like normal and black screen no matter what I do 
no mirror option nothing never had a problem ever 
Is rebooting really the only way ?
It'snot like I have allot saved but it's still annoying

hi,
I did post extensively about my experience with that Issue 677332. My last post indicated to CHROMEBOOK users [ like myself ] that issue in Q is no longer present, therefore I would suggest to any user who experience that issue to FOLLOW my set-up EXACTLY to smallest details.

WHY ?
~~~~~~~

Because I do not have any issues while following myself my SET-UP - including inside latest chromeOS ver of 68.0.3440.87 (Official Build) (64-bit).

Under different set-ups I had plenty of very frequent lost of VIDEO signals to TV, but now under my PUBLISHED set-up I did not encounter not even ONE lost of video signal to TV that would result in POWER-OFF my BOTH chromebooks to temporary fix issue.

IMHO - read my posts carefully, follow my published set-up to smallest details & you to may [ shall ] not encounter any more that issue !!!
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Deleted: Screenshot 2018-08-17 at 00.45.24.png 34.7 KB

	Screenshot 2018-08-17 at 00.45.24.png 34.7 KB View Download

Regardless of more or setup that I have, this shouldn’t be happening unless there is a power saving mode that I have setup that can be turned off that might help. It is weird because it only happens on YouTube for me. Which would be the last area I would expect it to happen.

My Pixelbook randomly blacks out and reboots with external monitor docked. There appears to be nothing initiating the blackout and reboot. This is occurring on the Stable channel Version 67.0.3396.99 and the previous verson. I have tried 3 different external monitors and about 12 different docks and USB-C to HDMI cables. It happens with ALL of them!

I thought I would chime in here since it is 2018-09-03 and I have now had this issue happen to me.
Acer Chromebook 15 and having identicle black out and crash issue.
Chrome Version 68.0.3440.118 (Official Build) (64-bit)
Doesn't matter the monitor type.
Trying to extend the desktop to the external monitor: invariably at some point in time the extended monitor goes blank.  Sometimes crashing the Acer Chrome 15, sometimes not, but still the chromebook thinks that the monitor is still on as you can roll the mouse off screen and roll it back.  While in the office we tried this with two other non-acer chromebooks.  Easily duplicated the issue on those as well.  Tried with AOC portable USB 3.0 external monitor and an Asus MB169B+ external USB 3.0 monitor.  Exact same issue crept up.  Interestingly enough we often had to reboot the chromebooks for them to even recognize the external USB 3.0 portable monitors.  The middle school has 400 of the smaller version of thee chromebooks so I am going to test it out at the school next week on a few of those devices.

Acer Chromebook 14 CB3-431
Issue is that the secondary, extended display is showing a black screen (still getting signal just no image).
Version 69.0.3497.95 (Official Build) (64-bit)
Monitor is a Samsung S24D300H connected via HDMI to HDMI

Acer Chromebook R11
Version 69.0.3497.95 (official Build) (64-bit)
Platform 10895.56.0 (Official Build) stable-channel cyan
Firmware Google_Cyan.7287.57.180

Connected to external monitor in dock mode (lid closed), external monitor screen randomly black out.
Used giant mouse cursor since day 1 on this laptop, so this fix doesn't work on me 

hi,
why you people do not like to follow my advice ?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

follow my published steps & you shall not have Issue 677332 any more, 
just do it - follow step by step how I did it -;)

my steps did not solve Issue 677332 but removed INCONVENIENCE only,
=======================
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hi fandc201...@gmail.com,

how about you post your findings step by step to help general chromebook users? You did many posts and it's hard to follow.

Thanks,

Jason

Acer Chromebook 14 CB3-431
Version 69.0.3497.95 (Official build) (64-bit)
Platform 10985.56.0 stable channel edgar
Firmware Google_Edgar.7287.167.96

Been using the laptop teamed to a projector for two years without issue. Running with lid open today, screen mirroring via HDMI to a projector, loss of signal to the projector after 40 minutes of playing YouTube videos. This is the first time this has happened, but I note similar units listed above having previously showing this behavior. I realize Fresh and Clean has a workaround apparently involving the use of a large cursor, but noting that this did not apparently work for everyone will await some more permanent resolution of this issue.

Pixelbook
Version 69.0.3497.120 (Official Build) (64-bit)
10895.78.0 (Official Build) stable-channel eve
Firmware Google_Eve.9584.160.0

Using my Pixelbook with a USB keyboard and USB mouse along with a Henge Dock (https://hengedocks.com/products/tethered-dock) and encountering this issue as well.

It happens seemingly at random and occurs for ~2 seconds where the monitor blinks completely black. Not sure what the cause of this issue is and can't reliably reproduce it with any behavior. Seems to be what everyone else here is experiencing - it appears that setting my cursor to the big cursor //does// help a little bit (or at least makes it less frequent).

Pixelbook
Version 69.0.3497.120 (Official Build) (64-bit)

Connecting Pixelbook to external monitor 2560x1080 gives me no signal in the external screen, so no image shown. However, the monitor itself is detected by Pixelbook.

When I downsized resolution to 1920x1080 for the ultrawide monitor, the screen works again.

In the past I can connect to 2560x1080 with no problems. What happened?

This is happening daily with my Acer Chromebox CXI3-I58GKM.  I have powerwashed and no change.  Ugh.  Worked well until the Fall when this started.  Feel like I'm using Windows again....

what I'm doing daily [ or as needed ] to not experience this INCONVENIENCE BAG;

- I'm keeping MIRROR scr to tv under settings, and
- I'm asking under POWER settings to;

a- when idle keep display ON
b- do not go to SLEEP when lid closed

start to use chromebook

- open lid, this power it ON [ same login scr is on tv & on chromebbok ],
- login to chromebook account, 

when logged in

- f6 to reduce to ZERO chromebook scr brightness,
- close chromebook lid,
- connect to router to use internet & to play youtube content,

because I prefer to use resolution different that may scr & tv under MIRROR is set to use, therefore [ after logged-in ] I go to DISPLAY setup, and

- change chromebook [ it is actually changing tv resolution now ] to my preferred resolution [ normally lower then both of tv & chromebook are using ],

after above very small steps I do not experience my tv going off after several minutes of youtube play,

when finishing using chromebook;

- I close chrome browser [ security ],
- I always select power OFF [ security ],  

as I did say before, my steps do not solve Issue 677332 but removed INCONVENIENCE,
=======================
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