I didn't reproduce this issue on another X1 2nd. Reboot for 10 times, all good.
Verified OS version: Focal $ uname -a Linux u-ThinkPad-X1-Extreme-Gen2 5.11.0-25-generic #27~20.04.1-Ubuntu SMP Tue Jul 13 17:41:23 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux NVRM: loading NVIDIA UNIX x86_64 Kernel Module 460.91.03 The error I found in dmesg is: [ 14.291240] loop0: detected capacity change from 0 to 226816 [ 14.328998] loop1: detected capacity change from 0 to 231360 It could be related to ZFS raid, It's better to backup everything and scan your partition. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939349 Title: frequent hangs with latest hirsute kernel (nvidia graphics) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939349/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs