Can you give the latest mainline kernel a try to see if this issue exists in the upstream? https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14-rc7/
Please download and install amd64/build generic deb files (files marked A, see section "How do I install an upstream kernel?" in https://wiki.ubuntu.com/Kernel/MainlineBuilds) I also a build a kernel for debug in https://people.canonical.com/~mschiu77/lp1939347/lock_dbg/. Please also test this kernel and paste the journal log of the command "journalctl -k -b -1 > journal.log" after reboot. Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939347 Title: Ubuntu 20.04 freeze since kernel 5.11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939347/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
