Thanks. It appears there's a hardware or kernel problem when resuming from sleep:
Feb 10 23:13:49 Garitchnekig systemd-journald[265]: Missed 850 kernel messages Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 Feb 10 23:13:49 Garitchnekig kernel: pcieport 0000:00:1c.0: AER: Multiple Uncorrected (Fatal) error received: 0000:01:00.1 So it's not a Xorg or Gnome Shell bug. I will assign it to the kernel and also to the Nvidia driver, which runs in the kernel. ** Changed in: nvidia-graphics-drivers-460 (Ubuntu) Status: Incomplete => New ** Also affects: linux-hwe-5.8 (Ubuntu) Importance: Undecided Status: New ** Tags added: 5.8-gfx -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915322 Title: [nvidia] System freezes on resume from sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.8/+bug/1915322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs