[drm] GPU HANG: ecode 8:0:00000000
On Dell Latitude E7250 with Debian sid/unstable with GNOME Shell X.Org (gnome-shell 43.6-1), the desktop environment hung for five to ten seconds (maybe after playing a YouTube video in Mozilla Firefox/Nightly (116.0a1, 20230614093740)). Linux logged a GPU hang.
$ lspci -s 00:02.0 -nn
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 5500 [8086:1616] (rev 09)
$ uname -a
Linux ersatz 6.3.0-1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.3.7-1 (2023-06-12) x86_64 GNU/Linux
$ dmesg
[…]
[67654.544011] Asynchronous wait on fence 0000:00:02.0:gnome-shell[1608]:176018 timed out (hint:intel_atomic_commit_ready [i915])
[67658.640547] i915 0000:00:02.0: [drm] GPU HANG: ecode 8:0:00000000
[67658.641555] i915 0000:00:02.0: [drm] Resetting rcs0 for stopped heartbeat on rcs0
PS: After the release of Debian 12 Bookworm, Debian sid/unstable just updated the Linux kernel from linux-image-6.1.0-9-amd64 (6.1.27) to linux-image-6.3.0-1-amd64 (6.3.7), and I don’t remember having experienced such a thing before 6.3, but it only happened once, and I do not know how to reproduce it.