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external display no longer detected after updating from 63 to 64.0.3282
Reported by
sun...@gmail.com,
Mar 5 2018
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Issue descriptionUserAgent: Mozilla/5.0 (X11; CrOS x86_64 10323.46.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.107 Safari/537.36 Platform: Platform 10323.46.0 (Official Build) beta-channel caroline Steps to reproduce the problem: 1. Connect external display through USB-C to DP/HDMI adapter 2. Upgrade ChromeOS from 63 to 64.0.3282 on stable channel 3. Observe that external display is no longer detected 4. Upgrade ChromeOS from 64 stable channel to 65 beta channel 5. Observe that external display is still not detected What is the expected behavior? External display should be detected so that I can use extended desktop mode. Without it, I'm limited to using just my chromebook's native display. What went wrong? My Samsung Chromebook Pro (Caroline) has stopped detecting my external display display (connected via USB-C to DP/HDMI adapter) after upgrading from version 63 stable channel to version 64 stable channel today. I have also tried upgrading it further to version 65 by switching from stable channel to beta channel, but no luck! :( Did this work before? Yes 63 Chrome version: 65.0.3325.107 Channel: beta OS Version: 10323.46.0 Flash Version: See also related Issue 818778.
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Mar 7 2018
Thankfully I was able to fix this issue by performing a hard reset (Refresh+Power) as suggested at https://bugs.chromium.org/p/chromium/issues/detail?id=819048#c6
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Mar 9 2018
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Mar 14 2018
marcheu, anything to look at here? The user seems to have recovered from this problem.
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Mar 14 2018
If only power-refresh fixes it, then it sounds like type-c negotiation problem, which lives in the ec pd, which Todd will know about.
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Sep 23
Will be difficult to debug w/o additional logs. Did you happen to file feedback? If not, do you recall what adapter (USBC->?) and external display you were using? Looks like last 63 update was 2018-01-08 platform:10032.86.0 and the first 64 update 2018-02-13 platform:10176.72.0 https://crosland.corp.google.com/log/10032.86.0..10176.72.0 That diff did contain a FW update (two actually) https://chrome-internal-review.googlesource.com/c/chromeos/overlays/overlay-caroline-private/+/524158 https://chrome-internal-review.googlesource.com/c/chromeos/overlays/overlay-caroline-private/+/537998 Probably the first place to start looking if we suspect something on the EC side.
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Nov 16
Closing given - there's no logs from original failure - can't I repro in quick test here FW:7820.384.0 PLAT:R72-11219.0.0 - hoho + Dell U2410, both ports, both polarities work. Please re-open if its still failing, file feedback and reference this bug ( crbug.com/818825 ) |
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Comment 1 by sun...@gmail.com
, Mar 6 2018