https://bugs.freedesktop.org/show_bug.cgi?id=107266
--- Comment #7 from robert <rh...@hotmail.com> ---
All Polaris are experiencing ring errors on mainline kernels, its not just Pro
Duo Polaris.
# lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480] (rev ef)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480] (rev ef)
04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480] (rev ef)
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480] (rev cf)
09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480] (rev ef)
# uname -a
Linux localhost 4.19.0-999-lowlatency #201810092201 SMP PREEMPT Wed Oct 10
02:12:06 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
# dmesg | grep amdgpu
[ 8.125848] amdgpu: [powerplay] Failed to retrieve minimum clocks.
[ 8.125849] amdgpu: [powerplay] Error in phm_get_clock_info
[ 8.260967] [drm] Initialized amdgpu 3.27.0 20150101 for 0000:09:00.0 on
minor 4
[ 70.238071] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout,
signaled seq=597, emitted seq=599
[ 70.238198] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout,
signaled seq=597, emitted seq=599
etc etc
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