I have some speculation, I only have my own machine, so it's not like I can really test this. Just speculating.
I suspect this is caused by the "OpenH264 Video Codec provided by Cisco Systems, Inc." plugin in Firefox, which re-enabled itself after I updated my apps. Steam may also be using something similar. I disabled acceleration in the steam client (obviously not in games). What I have noticed is that even if it locks up, actually the numlock key will work. At first, it is slow to respond to numlock, but then it is responsive. I can't switch to a virtual console, at least not visually. One bit of speculation is, if it's the h264 codec doing it, maybe you have to multitask with a 3D app or game at the same time to get it lock up. Another thing though is I haven't yet returned to my own system locked up, it only locked up while I was using it. In case it turns out to matter, I use the Workman keyboard layout. The end of journalctl -b -1 Sep 09 17:07:17 Computer /usr/libexec/gdm-x-session[3335]: ![1725919605,000,xklavier_evt_xkb.c:xkl_xkb_process_x_event/] ATTENTION! Currently cached group 0 is not equal to the current group from the event: 1 Sep 09 17:07:17 Computer /usr/libexec/gdm-x-session[3335]: ![1725919636,000,xklavier_evt_xkb.c:xkl_xkb_process_x_event/] ATTENTION! Currently cached group 0 is not equal to the current group from the event: 1 Sep 09 17:07:17 Computer /usr/libexec/gdm-x-session[3335]: ![1725919636,000,xklavier_evt_xkb.c:xkl_xkb_process_x_event/] ATTENTION! Currently cached group 0 is not equal to the current group from the event: 1 Sep 09 17:07:17 Computer /usr/libexec/gdm-x-session[3335]: ![1725919637,000,xklavier_evt_xkb.c:xkl_xkb_process_x_event/] ATTENTION! Currently cached group 0 is not equal to the current group from the event: 1 Sep 09 17:07:27 Computer kernel: amdgpu 0000:0a:00.0: [drm] *ERROR* flip_done timed out Sep 09 17:07:27 Computer kernel: amdgpu 0000:0a:00.0: [drm] *ERROR* [CRTC:93:crtc-0] commit wait timed out Sep 09 17:07:37 Computer kernel: amdgpu 0000:0a:00.0: [drm] *ERROR* flip_done timed out Sep 09 17:07:37 Computer kernel: amdgpu 0000:0a:00.0: [drm] *ERROR* [PLANE:72:plane-5] commit wait timed out Sep 09 17:07:45 Computer kernel: sysrq: This sysrq operation is disabled. Sep 09 17:07:45 Computer kernel: sysrq: This sysrq operation is disabled. Sep 09 17:07:45 Computer kernel: sysrq: This sysrq operation is disabled. Sep 09 17:07:45 Computer kernel: sysrq: Emergency Sync Sep 09 17:07:45 Computer kernel: Emergency Sync complete Sep 09 17:07:46 Computer kernel: sysrq: Emergency Remount R/O (I used alt+prtsc REISUB, without knowing if the keyboard layout is ignored, it is? not sure.) My system: OS: Ubuntu MATE 24.04.1 LTS x86_64 (actually, this is just vanilla 24.04, but I installed MATE, and am using it - but the same lockup happened in Wayland (until I disabled the h264 codec, and acceleration in the steam client)) Host: X570 Phantom Gaming 4 WiFi ax Kernel: 6.8.0-41-generic Resolution: 2560x1440 CPU: AMD Ryzen 9 5900X (24) @ 3.700G GPU: AMD ATI Radeon RX 6950 XT Memory: 5738MiB / 64218MiB -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2047154 Title: [amdgpu][drm] *ERROR* flip_done timed out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.2/+bug/2047154/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
