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Issue 616466 link

Starred by 2 users

Issue metadata

Status: Fixed
Owner:
Last visit > 30 days ago
Closed: Jun 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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WebRtcWebcamBrowserTest.MANUAL_TestAcquiringAndReacquiringWebcam frequently timing out in Linux Tester

Project Member Reported by tnakamura@chromium.org, Jun 1 2016

Issue description

Last green run:
https://build.chromium.org/p/chromium.webrtc/builders/Linux%20Tester/builds/17601

First failing run:
https://build.chromium.org/p/chromium.webrtc/builders/Linux%20Tester/builds/17602

I don't see any changes from the WebRTC repo between those runs. On the Chrome side, I see r396818, but I'm not 100% certain that is to blame. Still, it's the closest thing I have to a clue. :)

grunell@ (CL author) and/or guidou@ (current sheriff), can you take a look?
 
I just reverted the suspect CL (and a follow-up one). 
Will keep an eye on the bot.
Cc: guidou@chromium.org
 Issue 616111  has been merged into this issue.
The bot failed after the revert, so I relanded the CLs.
Perhaps this is a hardware failure of the webcam in the bot?
Note that no other bot has exhibited this failure so far.
kjellander@ - Do you think we should we route this to the lab folks? https://build.chromium.org/p/chromium.webrtc/builders/Linux%20Tester?numbuilds=200 is still mostly red.
Components: Infra>Labs
Owner: ----
Status: Untriaged (was: Assigned)
Yes, I believe this must be hardware related. Especially since it doesn't seem to affect the almost identical (except that WebRTC it ToT revision on it): 
https://build.chromium.org/p/chromium.webrtc.fyi/builders/Linux%20Tester

Labs team: can you look into replacing the webcam on build50-b1?
Cc: emir...@chromium.org
Owner: pschmidt@chromium.org
Status: Assigned (was: Untriaged)
Status: Started (was: Assigned)
I think I have found 2 spare webcams.  

Anyway I power cycled build50-b1 (sometimes this does wonders).   It's effective with https://build.chromium.org/p/chromium.webrtc/builders/Linux%20Tester/builds/17790

I'll replace it if badness returns.
Status: Fixed (was: Started)
The bot is very green now :) Thanks Peter.

I'm curious about you mentioning power cycling the machine - I thought all our bots were rebooting between builds, so what difference could that do?
I find the best way to quiesce hardware is to pull power.   In retrospect what I should have done  first is just reset the camera.

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