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[Bug 1084767] 3D & games produce periodic GPU crashes (Radeon R7 370)
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 04 Apr 2018 17:35:57 +0000
  • Message-id: <bug-1084767-21960-lyf4MvofRL@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1084767
http://bugzilla.opensuse.org/show_bug.cgi?id=1084767#c16

--- Comment #16 from Mircea Kitsune <sonichedgehog_hyperblast00@xxxxxxxxx> ---
Today I've ran two tests to ensure that frequencies and DPM are not a factor.

- Setting the DPM profile to low by running the following commands as root:

echo battery > /sys/class/drm/card0/device/power_dpm_state
echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level

- Booting my system with the following Kernel parameters to disable DPM:

radeon.dpm=0 amdgpu.dpm=0

Just like with everything else, they made absolutely no difference: Xonotic
froze the machine after only 8 minutes of running each time. The settings are
applied and visible by checking /sys/kernel/debug/dri/0/amdgpu_pm_info, and are
even reflected in the performance which was reduced from 60 FPS to below 30
FPS.

This is NOT a hardware failure: The freezes occur identically even if both the
core (GPU) and memory (VRAM) clocks are under-clocked to very safe frequencies.
The key must be something in the Linux firmware for this card.

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