Bug 94158

Summary: [amdgpu][tonga] GPU randomly gets stuck at 100% load and high clocks
Product: DRI Reporter: csaba.halasz
Component: DRM/AMDgpuAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: normal    
Priority: medium    
Version: DRI git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description csaba.halasz 2016-02-15 12:45:30 UTC 
I have noticed that my GPU fans start running at high speed after some time. Investigating, I see:

# cat /sys/kernel/debug/dri/0/amdgpu_pm_info 

 [  mclk  ]: 1425 MHz
 [  sclk  ]: 990 MHz
 [GPU load]: 100%

Of course I am not running any graphics intensive programs and radeontop confirms <1% load. Even shutting down Xorg altogether doesn't help. It may be related to dpms going to "off" state, the last time it happened while the monitors were off, or possibly just as they were switching off. I will try to collect additional data points. Nothing suspicious shows in logs. Powerplay seems to work fine until the issue occurs. Afterwards, I can manually lower clocks, but load stays 100%. Side note: dpms transitions seem to reset the manual power_dpm_force_performance_level back to auto and hence high clock.

System: r9 380, amdgpu git agd5f/drm-fixes-4.5 cc1de6e8 merged with agd5f/drm-next-4.6-wip fa9e6991, llvm git ae316aa0, mesa git fe14110f, Xorg 1.18
Comment 1 Alex Deucher 2016-02-15 17:32:31 UTC 
Is the GPU also hung when this happens?
Comment 2 csaba.halasz 2016-02-15 19:07:04 UTC 
No, everything still works as usual and no sign of problem in the syslog (no dreaded VM_FAULT or "scheduler is timeout").
Comment 3 Michael Stenzel 2016-12-09 20:55:38 UTC 
Hello,

I have the same problem with an rx480. Also think it gets triggered
when monitor goes into dpms "off" state. Sometimes I keep vlc running
etc so monitor does not go into sleep, than the issue never happens.

says gpu load 100% under /sys/kernel/debug/dri/0/amdgpu_pm_info
but I only have chrome open with 1 tab and hexchat nothing else.

System: mesa-13.0.1, xf86-video-amdgpu-1.2.0, xorg-1.19.0 kernel 4.8.13 (slackware64-current), GPU: xfx 480 gtr
Comment 4 Martin Peres 2019-11-19 08:07:39 UTC 
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