Ubuntu 20.04 and Radeon HD 6950 : random black screens forcing me to force reboot

[tom]

Since a few days I experience random black screens, forcing me to reboot the computer with the power button. I suspect the video driver to be responsible, but I'm not sure. I hope you could help me out here.
First some details about my system (Ubuntu 20.04, fresh install) and the video card:

tom@tom-desktop-linux:~$ uname -r
5.8.0-40-generic

tom@tom-desktop-linux:~$ lspci -k | grep -EA3 'VGA|3D|Display'
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950]
 Subsystem: PC Partner Limited / Sapphire Technology Cayman PRO [Radeon HD 6950]
 Kernel driver in use: radeon
 Kernel modules: radeon

tom@tom-desktop-linux:~$ sudo lshw -c video
  *-display
       description: VGA compatible controller
       product: Cayman PRO [Radeon HD 6950]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:48 memory:d0000000-dfffffff memory:fe620000-fe63ffff ioport:e000(size=256) memory:c0000-dffff

And here is the journalctl output minutes before the event:

linux kernel: audit: type=1400 audit(1611841291.961:1464): apparmor="DENIED" operation="open" profile="snap.kate.kate" name="/proc/sys/kernel/core_pattern" pid=4899 comm="kate" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Jan 28 14:41:32 tom-desktop-linux org.gnome.Nautilus[4899]: Qt: Session management error: Could not open network socket
Jan 28 14:41:32 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:41:32 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:41:32 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:41:32 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:41:42 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:42:05 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:42:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:42:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:42:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:42:50 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:42:57 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:43:15 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:43:26 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:43:42 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:44:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:44:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:44:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:44:31 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:46:03 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:47:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:47:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:47:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:47:25 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:47:59 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:48:39 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:49:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:49:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:49:23 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:51:23 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:51:59 tom-desktop-linux audit[5008]: AVC apparmor="DENIED" operation="open" profile="snap.kate.kate" name="/proc/sys/kernel/core_pattern" pid=5008 comm="kate" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Jan 28 14:51:59 tom-desktop-linux kernel: audit: type=1400 audit(1611841919.574:1465): apparmor="DENIED" operation="open" profile="snap.kate.kate" name="/proc/sys/kernel/core_pattern" pid=5008 comm="kate" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Jan 28 14:51:59 tom-desktop-linux org.gnome.Nautilus[5008]: Qt: Session management error: Could not open network socket
Jan 28 14:51:59 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:51:59 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:51:59 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:52:00 tom-desktop-linux org.gnome.Nautilus[3915]: sonnet.core: No language dictionaries for the language: "en_US"
Jan 28 14:52:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:52:11 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:52:12 tom-desktop-linux systemd-resolved[365]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 10244msec
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015663 on ring 0)
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 10240msec
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 10752msec
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 10756msec
Jan 28 14:53:14 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015664 on ring 0)
Jan 28 14:53:15 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 11268msec
Jan 28 14:53:15 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015665 on ring 0)
Jan 28 14:53:15 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 11264msec
Jan 28 14:53:15 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 11776msec
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 11780msec
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015666 on ring 0)
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 12292msec
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015667 on ring 0)
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 12288msec
Jan 28 14:53:16 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 12804msec
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015668 on ring 0)
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 12800msec
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 13316msec
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015669 on ring 0)
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 13312msec
Jan 28 14:53:17 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 13828msec
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566a on ring 0)
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 13824msec
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 14340msec
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566b on ring 0)
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 14336msec
Jan 28 14:53:18 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 14848msec
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 14852msec
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566c on ring 0)
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 15364msec
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566d on ring 0)
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 15360msec
Jan 28 14:53:19 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 15872msec
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 15876msec
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566e on ring 0)
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 16388msec
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001566f on ring 0)
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 16384msec
Jan 28 14:53:20 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 16896msec
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 16900msec
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015670 on ring 0)
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 17408msec
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 17412msec
Jan 28 14:53:21 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015671 on ring 0)
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 17920msec
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 17924msec
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015672 on ring 0)
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 18436msec
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015673 on ring 0)
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 18432msec
Jan 28 14:53:22 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 18948msec
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015674 on ring 0)
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 18944msec
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 19460msec
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 19456msec
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:23 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015675 on ring 0)
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 19968msec
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 19972msec
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015676 on ring 0)
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 20484msec
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015677 on ring 0)
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 20480msec
Jan 28 14:53:24 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 20992msec
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 20996msec
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015678 on ring 0)
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 21508msec
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015679 on ring 0)
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 21504msec
Jan 28 14:53:25 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 22020msec
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567a on ring 0)
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 22016msec
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 22532msec
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567b on ring 0)
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 22528msec
Jan 28 14:53:26 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 23044msec
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 23040msec
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567c on ring 0)
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 23556msec
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567d on ring 0)
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 23552msec
Jan 28 14:53:27 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 24068msec
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567e on ring 0)
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 24064msec
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 24580msec
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001567f on ring 0)
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 24576msec
Jan 28 14:53:28 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 25088msec
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 25092msec
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015680 on ring 0)
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 25604msec
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015681 on ring 0)
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 25600msec
Jan 28 14:53:29 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 26116msec
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015682 on ring 0)
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 26112msec
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 26628msec
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015683 on ring 0)
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 26624msec
Jan 28 14:53:30 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 27140msec
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015684 on ring 0)
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 27136msec
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 27648msec
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 27652msec
Jan 28 14:53:31 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015698 on ring 0)
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 28164msec
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x0000000000015699 on ring 0)
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 28160msec
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 28672msec
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 28676msec
Jan 28 14:53:32 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001569a on ring 0)
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 29188msec
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001569b on ring 0)
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 29184msec
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 29700msec
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001569c on ring 0)
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 29696msec
Jan 28 14:53:33 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 30208msec
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 30216msec
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x000000000001569d on ring 0)
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 4 stalled for more than 30720msec
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000006eb4 last fence id 0x0000000000006eb5 on ring 4)
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: ring 0 stalled for more than 30724msec
Jan 28 14:53:34 tom-desktop-linux kernel: radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000015638 last fence id 0x00000000000156a0 on ring 0)
Jan 28 14:53:35 tom-desktop-linux kernel: BUG: unable to handle page fault for address: ffffaa3140890ffc
Jan 28 14:53:35 tom-desktop-linux kernel: #PF: supervisor read access in kernel mode
Jan 28 14:53:35 tom-desktop-linux kernel: #PF: error_code(0x0000) - not-present page
Jan 28 14:53:35 tom-desktop-linux kernel: PGD 32195e067 P4D 32195e067 PUD 0
Jan 28 14:53:35 tom-desktop-linux kernel: Oops: 0000 [#1] SMP PTI
Jan 28 14:53:35 tom-desktop-linux kernel: CPU: 1 PID: 1680 Comm: gnome-shell Not tainted 5.8.0-40-generic #45~20.04.1-Ubuntu
Jan 28 14:53:35 tom-desktop-linux kernel: Hardware name: System manufacturer System Product Name/P8Z68-V PRO, BIOS 0801 08/15/2011
Jan 28 14:53:35 tom-desktop-linux kernel: RIP: 0010:radeon_ring_backup+0xc9/0x140 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: Code: ed 49 89 07 48 85 c0 74 7d 41 8d 7d ff 31 d2 48 c1 e7 02 eb 07 49 8b 07 48 83 c2 04 49 8b 74 24 08 8d 4b 01 89 db 48 8d 34 9e <8b> 36 89 34 10 41 23 4c 24 54 89 cb 48 39 d7 75 da 4c 89 f7 e8 ee
Jan 28 14:53:35 tom-desktop-linux kernel: RSP: 0018:ffffaa2d429abc50 EFLAGS: 00010202
Jan 28 14:53:35 tom-desktop-linux kernel: RAX: ffff9ce6b20e0000 RBX: 00000000ffffffff RCX: 0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: RDX: 0000000000000000 RSI: ffffaa3140890ffc RDI: 000000000001aa40
Jan 28 14:53:35 tom-desktop-linux kernel: RBP: ffffaa2d429abc78 R08: 00000000000321e7 R09: 0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: R10: ffff9ce6b20e0000 R11: 0000000000000020 R12: ffff9ce81bb613d8
Jan 28 14:53:35 tom-desktop-linux kernel: R13: 0000000000006a91 R14: ffff9ce81bb613b8 R15: ffffaa2d429abcb8
Jan 28 14:53:35 tom-desktop-linux kernel: FS: 00007f1a82072cc0(0000) GS:ffff9ce823480000(0000) knlGS:0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 28 14:53:35 tom-desktop-linux kernel: CR2: ffffaa3140890ffc CR3: 00000002e1d54002 CR4: 00000000000606e0
Jan 28 14:53:35 tom-desktop-linux kernel: Call Trace:
Jan 28 14:53:35 tom-desktop-linux kernel: radeon_gpu_reset+0xc3/0x2f0 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: ? dma_resv_wait_timeout_rcu+0x153/0x3a0
Jan 28 14:53:35 tom-desktop-linux kernel: ? radeon_gem_busy_ioctl+0x80/0x80 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: radeon_gem_handle_lockup.part.0+0xe/0x20 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: radeon_gem_wait_idle_ioctl+0xd6/0x110 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: ? radeon_gem_busy_ioctl+0x80/0x80 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: drm_ioctl_kernel+0xae/0xf0 [drm]
Jan 28 14:53:35 tom-desktop-linux kernel: drm_ioctl+0x234/0x3d0 [drm]
Jan 28 14:53:35 tom-desktop-linux kernel: ? radeon_gem_busy_ioctl+0x80/0x80 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: ? do_futex+0x14d/0x890
Jan 28 14:53:35 tom-desktop-linux kernel: ? vm_area_free+0x18/0x20
Jan 28 14:53:35 tom-desktop-linux kernel: radeon_drm_ioctl+0x4e/0x80 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: ksys_ioctl+0x9d/0xd0
Jan 28 14:53:35 tom-desktop-linux kernel: __x64_sys_ioctl+0x1a/0x20
Jan 28 14:53:35 tom-desktop-linux kernel: do_syscall_64+0x49/0xc0
Jan 28 14:53:35 tom-desktop-linux kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9
Jan 28 14:53:35 tom-desktop-linux kernel: RIP: 0033:0x7f1a874c637b
Jan 28 14:53:35 tom-desktop-linux kernel: Code: 0f 1e fa 48 8b 05 15 3b 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e5 3a 0d 00 f7 d8 64 89 01 48
Jan 28 14:53:35 tom-desktop-linux kernel: RSP: 002b:00007ffeda5ba1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Jan 28 14:53:35 tom-desktop-linux kernel: RAX: ffffffffffffffda RBX: 00007ffeda5ba200 RCX: 00007f1a874c637b
Jan 28 14:53:35 tom-desktop-linux kernel: RDX: 00007ffeda5ba200 RSI: 0000000040086464 RDI: 000000000000000c
Jan 28 14:53:35 tom-desktop-linux kernel: RBP: 0000000040086464 R08: 00000000000edc2a R09: 0000000000000bb9
Jan 28 14:53:35 tom-desktop-linux kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
Jan 28 14:53:35 tom-desktop-linux kernel: R13: 000000000000000c R14: 0000558b19c484e0 R15: 0000558b1a94d1d0
Jan 28 14:53:35 tom-desktop-linux kernel: Modules linked in: rfcomm bnep intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp btusb btrtl coretemp btbcm btintel crct10dif_pclmul snd_hda_codec_realtek ghash_clmulni_intel snd_hda_codec_generic bluetooth aesni_intel ledtrig_audio ecdh_generic crypto_simd cryptd ecc input_leds snd_hda_codec_hdmi radeon snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi glue_helper ttm snd_seq_midi_event snd_rawmidi drm_kms_helper snd_seq cec rc_core i2c_algo_bit fb_sys_fops rapl syscopyarea intel_cstate sysfillrect sysimgblt snd_seq_device snd_timer snd soundcore eeepc_wmi asus_wmi sparse_keymap at24 mei_me mei wmi_bmof mac_hid mxm_wmi sch_fq_codel parport_pc ppdev lp parport drm ip_tables x_tables autofs4 hid_generic usbhid hid crc32_pclmul i2c_i801 i2c_smbus firewire_ohci lpc_ich firewire_core crc_itu_t ahci libahci xhci_pci e1000e xhci_pci_renesas video wmi
Jan 28 14:53:35 tom-desktop-linux kernel: CR2: ffffaa3140890ffc
Jan 28 14:53:35 tom-desktop-linux kernel: ---[ end trace df2121f8f4442186 ]---
Jan 28 14:53:35 tom-desktop-linux kernel: RIP: 0010:radeon_ring_backup+0xc9/0x140 [radeon]
Jan 28 14:53:35 tom-desktop-linux kernel: Code: ed 49 89 07 48 85 c0 74 7d 41 8d 7d ff 31 d2 48 c1 e7 02 eb 07 49 8b 07 48 83 c2 04 49 8b 74 24 08 8d 4b 01 89 db 48 8d 34 9e <8b> 36 89 34 10 41 23 4c 24 54 89 cb 48 39 d7 75 da 4c 89 f7 e8 ee
Jan 28 14:53:35 tom-desktop-linux kernel: RSP: 0018:ffffaa2d429abc50 EFLAGS: 00010202
Jan 28 14:53:35 tom-desktop-linux kernel: RAX: ffff9ce6b20e0000 RBX: 00000000ffffffff RCX: 0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: RDX: 0000000000000000 RSI: ffffaa3140890ffc RDI: 000000000001aa40
Jan 28 14:53:35 tom-desktop-linux kernel: RBP: ffffaa2d429abc78 R08: 00000000000321e7 R09: 0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: R10: ffff9ce6b20e0000 R11: 0000000000000020 R12: ffff9ce81bb613d8
Jan 28 14:53:35 tom-desktop-linux kernel: R13: 0000000000006a91 R14: ffff9ce81bb613b8 R15: ffffaa2d429abcb8
Jan 28 14:53:35 tom-desktop-linux kernel: FS: 00007f1a82072cc0(0000) GS:ffff9ce823480000(0000) knlGS:0000000000000000
Jan 28 14:53:35 tom-desktop-linux kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 28 14:53:35 tom-desktop-linux kernel: CR2: ffffaa3140890ffc CR3: 00000002e1d54002 CR4: 00000000000606e0
-- Reboot --