[BISECTED], FOUND After bisecting, I found the troublesome commit:
drm/amdgpu: fix gfx hang during suspend with video playback (v2) https://kernel.ubuntu.com/git/ubuntu/ubuntu- bionic.git/commit/?id=6ad2b975986441870a9a67051f9571b5c09c2569 This problem is known and already has a bugfix in upstream: https://gitlab.freedesktop.org/drm/amd/-/issues/1094 Now that the problem has been identified and it affects normal operation of hardware I ask the ticket be raised to CRITICAL and either fixes in DRM upstream be backported to 18.04 LTS HWE, or the patch undone. Thanks Log: git bisect start git bisect bad a70cc238a0294ad63dbeb73c69450e8156cf31d8 git bisect good 6791ee82bfa161e17a9f94952c84b2b0aa0829ed git bisect good d7b1d9a450581a59eeec1f07b1899735063f7b54 git bisect good dd4cf9beceff77431ef18568be7b04357d391052 git bisect good f1c670058149fc6bc7fe59e462abeeefbc3176df git bisect skip 76d6c1bf805637505abb65b2964565e43f59dc63 git bisect skip 74b95fb8681aebab7b652dd9d6b5f8f30fa5792d git bisect skip 519d5c524073ab2bc51fc81a1dce4ca45017029a git bisect bad 548b3e311d63d6bc87e3fbb70adc9fcb5fce4083 git bisect bad addad368a3a0d07f1fee652589750a9d51c26d5b git bisect bad 1a3962a990cdc9be7b039c843de8e7f028b3cc68 git bisect bad 6ad2b975986441870a9a67051f9571b5c09c2569 ** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #1094 https://gitlab.freedesktop.org/drm/amd/-/issues/1094 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880041 Title: Failing to shutdown/power off or reboot on AMD Ryzen CPUs on kernel versions 5.3.0-52 and later To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe/+bug/1880041/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
