Thanks. Yes MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 will reliably avoid any failures in drmModeAtomicCommit.
This seems like a very simple setup (Intel graphics and one monitor) so hopefully I will be able to reproduce the problem at some stage. ** Summary changed: - Blanked screen doesn't wake up after locking + Blanked screen doesn't wake up after locking [Failed to post KMS update: drmModeAtomicCommit: Argument invalide] [Page flip discarded: drmModeAtomicCommit: Argument invalide] ** Summary changed: - Blanked screen doesn't wake up after locking [Failed to post KMS update: drmModeAtomicCommit: Argument invalide] [Page flip discarded: drmModeAtomicCommit: Argument invalide] + Blanked screen doesn't wake up after locking [drmModeAtomicCommit: Argument invalide] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1968040 Title: Blanked screen doesn't wake up after locking [drmModeAtomicCommit: Argument invalide] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1968040/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs