** Attachment added: "sosreport-starbuck-2022-01-20-ziauesz.tar.xz" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1958583/+attachment/5555972/+files/sosreport-starbuck-2022-01-20-ziauesz.tar.xz
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1958583 Title: entering gnome lockscreen causes astfb displays to hang Status in gnome-shell package in Ubuntu: New Status in linux package in Ubuntu: Confirmed Bug description: When I install ubuntu-desktop on servers with an AMI BMC, I find a remote desktop running on the BMC's virtual KVM display hangs when I transition to the lock screen. The screen either goes blank and fails to wake up on keyboard/mouse input - or the lock screen appears but freezes, leaving the clock display frozen in time. Correlated with the issue are the following messages in /var/log/syslog, which are emitted when I move the mouse cursor while the lock screen is frozen: Jan 19 20:34:53 starbuck gnome-shell[5002]: Failed to post KMS update: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Page flip discarded: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Failed to post KMS update: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Page flip discarded: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Failed to post KMS update: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Page flip discarded: drmModeAtomicCommit: Invalid argument Jan 19 20:34:53 starbuck gnome-shell[5002]: Failed to post KMS update: drmModeAtomicCommit: Invalid argument A commonality of these systems is that they use the astfb driver. I've found that this issue follows the kernel version. If I run a jammy desktop with jammy's 5.15 kernel, this issue occurs. If I downgrade just the kernel back to focal's 5.4, the issue vanishes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1958583/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
