My system is frequently, but intermittently locking up. I am unsure of what to do next to troubleshoot and/or whether I should report this as a bug. Advice would be appreciated. Note that my question is similar to one previously posted at radeon 0000:02:00.0: ring 0 stalled for more than 10492msec that has yet to be responded to.
My system intermittently locks up every few days. When that happens, the screen goes to black, then returns. At that point, the time on the clock indicates that the screen is frozen, but audio continues to play for 30 seconds to a minute. The keyboard and mouse do not affect what's being displayed, but I can Alt - SysRq - REISUB to restart.
Every time (6 crashes and counting), /var/log/kern.log indicates that
kernel: [353692.378886] radeon 0000:03:00.0: ring 0 stalled for more than 10280msec kernel: [353692.378896] radeon 0000:03:00.0: GPU lockup (current fence id 0x00000000006e96e5 last fence id 0x00000000006e96e9 on ring 0)
just before the system locks. Different ring numbers are reported as stalling at different times.
I'm running 16.04 LTS. I have a Radeon HD graphics card.
:~$ lspci | grep VGA 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] :~$ lspci -v -s 03:00.0 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd Cedar [Radeon HD 5000/6000/7350/8350 Series] Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d3d20000 (64-bit, non-prefetchable) [size=128K] I/O ports at 7000 [size=256] Expansion ROM at d3d00000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: radeon Kernel modules: radeon
In looking for solutions, I found an old bug report from 14.04 that is currently unassigned https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1409393.
[Edit:] Based on @MichaelBay 's suggestion, I ran the Checkbox graphics card tests and everything passed. I also I ran MemoryTest. No errors were found after 3 passes. Finally, I loaded Psensor to check the GPU temperatures, but there are no GPU readings.