Able to reproduce the issue on 54.0.2826.0/8710.0.0 dev-channel Peppy. Observed black screen flickering while recovering the OS.

This worked fine on 54.0.2826.0/8709.0.0_Dev_Peppy and Daisy.

Reproduce the issue on Chrome 54.0.2826.0/8711.0.0 - Daisy

Able to reproduce on Peppy and Daisy. 


Tested with Build: 54.0.2826.0/8710.0.0
Observation:
1) Black screen started as soon as the recovery process started.
2) waited more than 30 minutes still nothing came back on screen. Screen was still Blank.
3) removed the USB stick and saw the dev screen. From this time onward blank screen was not seen. 
4) able to log-on and work properly. Checked the chrome version and installation was successful.





Attaching recovery logs for Peppy.

Deleted: recovery.log 596 KB

recovery.log 596 KB View Download

Seems related to https://chromium-review.googlesource.com/#/c/368480/

souvikghosh/dhendrix, can you evaluate?

Is there a possibility to get into this issue via AU?

A quick look at the log shows many of these messages:
[    5.774827] DEBUG: tsm_vte: new vte object
[    5.823043] DEBUG: tsm_screen: new screen

That message comes from frecon, which also had a change land: https://chromium-review.googlesource.com/#/c/365563/

The part where flashrom is called seemed to succeed:
Starting firmware updater (/tmp/install-mount-point/usr/sbin/chromeos-firmwareupdate --mode=recovery)
Command: /tmp/install-mount-point/usr/sbin/chromeos-firmwareupdate --mode=recovery
Starting Google_Peppy firmware updater v4 (recovery)...
 - Updater package: [Google_Peppy.4389.93.0 / EC:peppy_v1.5.132-c77d95f]
 - Current system:  [RO:Google_Peppy.4389.93.0 , ACT:Google_Peppy.4389.93.0 / EC:peppy_v1.5.132-c77d95f]
 - Write protection: Hardware: ON, Software: Main=off EC=off
mode_recovery: update RO+RW
 * invoke: flashrom -p host --fast-verify -w bios.bin
mode_recovery: update ec/RO+RW
 * invoke: flashrom -p ec --fast-verify -w ec.bin
mode_recovery: EC may be restored or updated in next boot.
Firmware update (recovery) completed.
Finished after 27 seconds.
Firmware update completed.

Rep#8
AU works fine. No issues seen after successful update on daisy. 

Issue is seen on installing 54.0.2830.0/8713.0.0 dev channel Parrot, Paine, Gnawty (Blank OS recovery screen is seen)

Is this still happening?

Dominik, any comment/evaluation as per c#9?

Now  issue 646039  is observed - messages missing from recovery screen.

can this be mark as fixed/verified ?

Yes, this seems to be fixed.