Google Chrome	69.0.3497.58 (Official Build) beta (64-bit)
Chrome OS Version: 10895.33.0 (Official Build) beta-channel edgar
Chrome OS Platform: Acer Chromebook 14 CB3-431
Network info: Wifi, WPA2, BT Smarthub

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce:
(1) Not reproducible. Random occurrence.
(2)
(3)

Expected Result: Chromebook working correctly

Actual Result: Chromebook screen goes blank, power button briefly turns on blue power light on the side with no change to the screen. A forced restart by holding the power button for a minute is necessary after it happens.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Hard to reproduce due to it being a random occurrence. It has happened while using the Chromebook and having it sit idle, plugged in and unplugged, with no particular tab, site, app open.

What is the impact to the user, and is there a workaround? If so, what is
it?

Please provide any additional information below. Attach a screen shot or
log if possible.
Log analyser shows a TPM error 0x21, crash reporting, and a NOTREACHED() error in the logs. The NOTREACHED() error says that it is always caused by a coding error and should be reported, hence the report.

A copy of the log has been uploaded to this report.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.

 

Deleted: debug-logs_20180828-200148.tgz 1.9 MB

debug-logs_20180828-200148.tgz 1.9 MB Download