Created attachment 852364 [details]
Screenshot of frozen tty1

After the recent update to the 5.14 kernel, my Dell Latitude 7290 Laptop
freezes on system startup after like 30 seconds. I could login via the display
manager and even open a terminal and then the system froze. I could still move
the mouse, but the terminal and everything else was stuck.
I could switch to tty1 and tried to login as root there, but was stuck after
the password prompt (See attached Screenshot). After about 5 minutes I had to
forcefully terminate the system.

I did a full system rollback to the previous snapshot (including Kernel 5.13),
then installed all updates except the new kernel and rebooted. The system
behaves nicely. Then I updated the Kernel as well, rebooted the Laptop and it
was frozen again.

The issue only happens when the Laptop is connected to the Dell Docking
station. When disconnected from the Dock, it behaves nicely. When the system is
stuck, disconnecting it from the docking station and waiting a bit also help to
unfreeze the system. After reconnecting, the system remains responsive and does
not freeze again (I'm writing on it right now).

I also restarted the Docking Station but this had no effect at all. The Laptop
was still freezing.