Description: Ubuntu 18.04.1 LTS Release: 18.04 4.15.0-43-generic also have tried 4.15.0-43-generic (same error) I do not have older kernel on my system now, how to recover it? Thank you
now I cannot boot into my kubuntu only can get to emergency mode (recovery mode failed as well) journalctl -xb in emergency mode and found below errors (same as others in this thread) ACPI Error [\_SB_.PCIO. xxxxxxx ] Namespace lookup failure, AE_NOT_FOUND -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1584407 Title: ACPI Error: [\_SB_.PCI0.XHC_.RHUB.HS11] Namespace lookup failure, AE_NOT_FOUND (20150930/dswload-210) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584407/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs