[Bisected] GPU hangs and display artifacts on 5.18-rc3 on Intel GM45
Platform: Dell Latitude E6500
Chipset: Intel GM45
Steps to reproduce: happens soon after boot on kernel 5.18-rc3 . Can be triggered fast by opening a terminal and executing "dmesg" for a few times. Sometimes happens only after several minutes of GUI activity, though.
System architecture: amd64
Linux distribution: Ubuntu 20.04 fully updated
Xorg, Gnome Flashback
Display connector: LVDS
Bisected down to
commit b5cfe6f7a6e1 ("drm/i915: Remove short-term pins from execbuf, v6.")
Reverting this commit on top of v5.18-rc3 fixes the issue.
Photos of artifacts on the screen:
Dmesg after occurrence of this problem, on hand-compiled 5.18-rc3: dmesg_5.18.0-rc3.txt
Dmesg on 5.18-rc3 with this commit reverted: dmesg_5.18-rc3_reverted_patch.txt