So the mainline 5.14 works for you even with 2 monitors connected, right? Then could you help me find out which version starts to have this problem by testing the kernel in the url down below? https://people.canonical.com/~mschiu77/lp1940113/H/ https://people.canonical.com/~mschiu77/lp1940113/I/
Just let me know the test result and paste the journal log here if the system freeze 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/1940113 Title: Linux 5.11.0-25 & 5.11.0-27 panic when boot with thunderbolt dock connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1940113/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs