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 2013114

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

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https://bugs.launchpad.net/bugs/2013114

Title:
  The panel get blank for too long after disconnecting dock with
  monitors

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Invalid
Status in linux-oem-6.1 source package in Jammy:
  Fix Committed

Bug description:
  [Impact]
  Connect 2 or more external monitors via type-C docking station, the dp-mst 
function is working correctly. However, after unplugging the docking station, 
the internal display seems to freeze for more than 5 seconds to get back with 
normal display.

  [Fix]
  Intel release a fix to abort the DP AUX transfer on a disconnected TC port. 
It prevent the DP to stuck in a unexpected long retry.

  [Test]
  Connect external monitors to the type-C port on the system. Make sure 
external monitor display OK then unplug the dock. The internal panel should not 
stay in blank for more than 10 seconds.

  [Where problems could occur]
  The long AUX transfer timeout and retry are meaningless on a disconnected 
sink. Should be no risk for regression.

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