It appears to be a problem with AMD GPU. This extract from my dmesg may help.
Jan 5 10:13:12 zen kernel: [ 1.254538] [drm] Initialized amdgpu 3.41.0 20150101 for 0000:08:00.0 on minor 0 Jan 5 10:13:12 zen kernel: [ 4.288402] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.0.0 (-110). Jan 5 10:13:12 zen kernel: [ 5.312412] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.1.0 (-110). Jan 5 10:13:12 zen kernel: [ 6.336406] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.2.0 (-110). Jan 5 10:13:12 zen kernel: [ 7.360406] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.3.0 (-110). Jan 5 10:13:12 zen kernel: [ 8.384398] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.0.1 (-110). Jan 5 10:13:12 zen kernel: [ 9.408571] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.1.1 (-110). Jan 5 10:13:12 zen kernel: [ 10.432387] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.2.1 (-110). Jan 5 10:13:12 zen kernel: [ 11.456393] amdgpu 0000:08:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on comp_1.3.1 (-110). Jan 5 10:13:12 zen kernel: [ 11.470776] [drm:amdgpu_device_delayed_init_work_handler [amdgpu]] *ERROR* ib ring test failed (-110). Jan 5 10:13:12 zen kernel: [ 12.335164] snd_hda_intel 0000:08:00.1: bound 0000:08:00.0 (ops amdgpu_dm_audio_component_bind_ops [amdgpu]) Jan 5 10:13:12 zen kernel: [ 13.581573] amdgpu 0000:08:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none Jan 5 10:13:33 zen kernel: [ 33.874402] amdgpu 0000:08:00.0: amdgpu: failed to write reg 28b4 wait reg 28c6 Jan 5 10:13:53 zen kernel: [ 54.142888] amdgpu 0000:08:00.0: amdgpu: failed to write reg 1a6f4 wait reg 1a706 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956408 Title: Ubuntu 21.10 very slow after kernel update to 5.13.0-23-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956408/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
