Bug 78238

Summary: GPU lockup on opening new tab in Chromium
Product: DRI Reporter: russianneuromancer
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED WORKSFORME QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg
none
Xorg log
none
lockup none

Description russianneuromancer 2014-05-04 03:43:44 UTC 
Created attachment 98395 [details]
dmesg

If GPU blacklist is disabled in Chromium (on chrome://flags; so hardware accelerated rendering become enabled, judging from chrome://gpu) GPU sometimes lockup on just opening new tab (at least one time per day). After lockup I observe same behaviour like in Bug 77892 - reset happens but X is unresponsive except mouse.

Radeon HD 6620G, Kubuntu 14.04 x86_64, Linux 3.15rc3, X.Org Server 1.15.1, libdrm 2.4.54+git1405030630.5126fc, Mesa 10.3~git1405030730.64c467, radeon driver 7.3.99+git1405030730.be1469.

As I remember, this behaviour (GPU hang on opening new tab) introduced since Linux 3.15.
Comment 1 russianneuromancer 2014-05-04 03:45:59 UTC 
Created attachment 98396 [details]
Xorg log
Comment 2 Michel Dänzer 2014-05-08 02:55:38 UTC 
(In reply to comment #2)
> As I remember, this behaviour (GPU hang on opening new tab) introduced since
> Linux 3.15.

Can you confirm that, and if the problem still doesn't occur with an older kernel, bisect?
Comment 3 russianneuromancer 2014-05-11 08:51:43 UTC 
> Can you confirm that, and if the problem still doesn't occur with an older kernel
Yes, it doesn't occur with 3.14.3.

> bisect
Unfortunately, no.
Comment 4 russianneuromancer 2014-06-08 09:04:44 UTC 
Created attachment 100644 [details]
lockup

While GPU lockup doesn't happen anymore on opening new tab in Chromium, two other lockups happened for me with 3.15rc7 (system idle, Firefox with simple page without any video or HTML5 animation was opened; after three days of uptime) and 3.15rc8 (while fullscreen video playback in VLC, OpenGL GLX output; after five days of uptime). On latest lockup system become inaccessible via ssh (however cursor is still moving). Please look into attached log.

Do I need to open another bugreport, to report this SUMO lockups with 3.15 that wasn't reproducible with 3.14, or add more information here is fine?
Comment 5 russianneuromancer 2015-03-06 08:04:21 UTC 
Not reproducible anymore with current kernel, Mesa, etc.

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