This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1958013

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: hirsute

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https://bugs.launchpad.net/bugs/1958013

Title:
  System freeze during Shutdown, Restart, or Suspend

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Dear developers,
  My system freezes whenever I try to 1) shutdown, 2) restart, or 3) suspend it.

  System gets unresponsive (keyborad, mouse, network - ssh/ping from
  outside), screen turns black. However, non of the actions 1-3 gets
  finished, i.e. my system does not turn off, restart, or sleep. Hw
  reset needed after it.

  It is always reproducible and happens for kernels 
linux-image-5.11.0-41-generic and later.
  Does not happen for kernels linux-image-5.11.0-40-generic and earlier.

  Corresponding Journal sections (5.11.0-40 & 5.11.0-46) attached.

  Any other information or test you need, please let me know.
  Thank you!

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