Public bug reported:

Hello,

I have a Thinkpad T580 with Ubuntu 20.04.

After the following (regular) update

Install: linux-modules-extra-5.4.0-105-generic:amd64 (5.4.0-105.119, 
automatic), linux-headers-5.4.0-105:amd64 (5.4.0-105.119, automatic), 
linux-modules-5.4.0-105-generic:amd64 (5.4.0-105.119, automatic), 
linux-headers-5.4.0-105-generic:amd64 (5.4.0-105.119, automatic), 
linux-image-5.4.0-105-generic:amd64 (5.4.0-105.119, automatic)
Upgrade: linux-headers-generic:amd64 (5.4.0.104.108, 5.4.0.105.109), 
linux-image-generic:amd64 (5.4.0.104.108, 5.4.0.105.109), linux-generic:amd64 
(5.4.0.104.108, 5.4.0.105.109)


my system started to freeze  1..10 second after login.

I am able to log in into the console - without a freeze. However, I
receive a freeze / kernel panic when I start to reboot. Screenshot
attached.

When I blacklist the nouveau driver, the system works fine.

** Affects: xserver-xorg-video-nouveau (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "SystemFreeze.jpg"
   
https://bugs.launchpad.net/bugs/1965988/+attachment/5571995/+files/SystemFreeze.jpg

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https://bugs.launchpad.net/bugs/1965988

Title:
  systemd-logind failed to idle channel 2 - kernel panic

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