Possibly related: Your kernel log is showing a recurring hardware problem:
[ 4830.185697] pcieport 0000:00:1c.5: AER: Corrected error received: 0000:00:1c.5 [ 4830.185714] pcieport 0000:00:1c.5: AER: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID) [ 4830.185722] pcieport 0000:00:1c.5: AER: device [8086:9d15] error status/mask=00000001/00002000 [ 4830.185727] pcieport 0000:00:1c.5: AER: [ 0] RxErr which is this device: 00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 [8086:9d15] (rev f1) (prog-if 00 [Normal decode]) which may be related to a faulty or badly installed PCIe card (wifi etc). Regardless, please follow the instructions in comment #2. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1887718 Title: Screen freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1887718/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
