I just tested both kernels and here are the results: I first rebooted on the 5.11.0-33 kernel with the dock and the two screens connected. The system froze after 3s of boot.
I unplugged the dock and rebooted on the 5.11.0-33 kernel. The boot went well until the desktop. There, I reconnected the dock and everything froze. I then tried the 5.13.0-14 kernel, dock unplugged. The boot went well until the desktop. There, I plugged the dock again and the system partially froze. The mouse didn't move anymore, but I could still manipulate the Gnome 3 shell with the keyboard. I wanted to launch a terminal, the window opened but the shell (bash) failed to initialize (no prompt). I had to produce a hard reboot of the computer. I finally retried the kernel 5.13.0-14, dock connected. The startup slowed down progressively until Systemd showed me a list of pending services... Attached, the corresponding logs that journalctl managed to store (2 out of 4 attempts). It seems that these are the ones where I plugged the dock in a second time. ** Attachment added: "journalctl-k.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1940113/+attachment/5520450/+files/journalctl-k.log -- 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