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Issue 783312 link

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Issue metadata

Status: Verified
Closed: Nov 2017
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug

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video_ChromeHWDecodeUsed failing on tricky, caroline, lumpy, peppy

Project Member Reported by, Nov 9 2017

Issue description

Components: OS>Kernel>Graphics
Bisect range: @514906 - @514930, suspect @514912

@514906: cros tryjob --remote tricky-tot-chrome-pfq-informational --pass-through="--chrome_version=ba27610e4f6c4a2b4f02327e265f1b2a19145a0a" --yes
@514911: cros tryjob --remote tricky-tot-chrome-pfq-informational --pass-through="--chrome_version=dd9b1f91d0bfa3924e94c1c70aca199a28eb5db2" --yes
@514912: cros tryjob --remote tricky-tot-chrome-pfq-informational --pass-through="--chrome_version=dd9b1f91d0bfa3924e94c1c70aca199a28eb5db2" --yes
@514929: cros tryjob --remote tricky-tot-chrome-pfq-informational --pass-through="--chrome_version=293209f8d033161f4afafc504bd15d0b631167d8" --yes

Comment 4 by, Nov 9 2017

Cc: is a potential suspect within the range.
Added to "bisect":
@514907: cros tryjob --remote tricky-tot-chrome-pfq-informational --pass-through="--chrome_version=4b10171dd66716d4074d35f1debd98e363cec86b" --yes

Ugh, I forgot to add --hwtest. Restarting bisect.

+Pawel who owns video
likely mine at @514907.  Looking into it now.
tspez@ - any progress on your investigation? The last batch of tryjobs pretended to run HWTests but did not actually :( (filed  issue 783490 )

If you think your CL is likely and reverting won't be too awful, it would be nice to get a green PFQ run tonight, but we can also wait for tomorrow.

Project Member

Comment 10 by, Nov 10 2017

The following revision refers to this bug:

commit 064f38b9f525bc68c3496c141740ab95231ed829
Author: Tom Sepez <>
Date: Fri Nov 10 00:57:16 2017

Speculative fix for  bug 783312 

The change at @514907 appears to have subtly changed the logic,
so mimic the GetGpuPreSandboxHook() flow as existed in the old
code at

https: //
Bug:  783312 
Change-Id: I14996782de9fc469d3e31e7f1ba46ec353922710
Commit-Queue: Tom Sepez <>
Reviewed-by: Antoine Labour <>
Cr-Commit-Position: refs/heads/master@{#515389}

Components: -Internals>Media>Codecs OS>Kernel>Video
Status: Assigned (was: Untriaged)
Labels: videoshortlist
Status: Fixed (was: Assigned)
Looking at

Both have a string of green runs following the landing of this patch, please re-open if my analysis is off.


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