Bug 91676 - Random TONGA lockups during normal usage
Summary: Random TONGA lockups during normal usage
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2015-08-18 10:10 UTC by Mathias Tillman
Modified: 2015-08-26 20:40 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Kernel log of lockup (693.28 KB, text/plain)
2015-08-18 10:10 UTC, Mathias Tillman
no flags Details

Description Mathias Tillman 2015-08-18 10:10:48 UTC
Created attachment 117754 [details]
Kernel log of lockup

Using Kubuntu vivid with linux kernel 4.2-rc7 (from ubuntu mainline repo), and mesa/xorg from the oibaf ppa with a self-compiled xf86-video-amdgpu driver I've been getting random GPU lockups. When the lockup happens the computer seems to get stuck for a few seconds, then I get a black screen and a few seconds later the screen reappears, and I am able to move the mouse, but can't click anything. If I go to a tty and restart X it seems to resort to using llvmpipe, instead of amdgpu, and that works fine (without any acceleration).
If it's relevant, I am using a multi-monitor setup.

I have attached a kernel log of the lockup, and it looks to me like what's causing the lockup is this:
[ 2481.663794] amdgpu 0000:01:00.0: ring 9 stalled for more than 10000msec
[ 2481.663798] amdgpu 0000:01:00.0: GPU lockup (waiting for 0x0000000000013658 last fence id 0x0000000000013657 on ring 9)
[ 2481.663804] amdgpu 0000:01:00.0: failed to sync rings (-35)
Comment 1 Mathias Tillman 2015-08-26 20:40:52 UTC
Haven't been able to reproduce this using latest mesa and drm from git, and drm-next-4.3-wip (commit 9066b0c318589f47b754a3def4fe8ec4688dc21a) kernel, so I'm going to mark this as resolved.

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