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 2009014
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
** Changed in: linux (Ubuntu Kinetic)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2009014
Title:
Some QHD panels fail to refresh when PSR2 enabled
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:
New
Status in linux source package in Kinetic:
Incomplete
Status in linux-oem-6.1 source package in Kinetic:
Invalid
Bug description:
[Impact]
Some QHD (2560x1440) panels which support PSR2 refresh the display
abnormally. The display frequently stop responding for few seconds on all user
interactions, ex. mouse movement, TTY and any APP GUI. There's no problem on
the external monitor. After disabling PSR, the problem will be gone.
[Fix]
Intel release a fix to calculate the wake up line count and configure them
into PSR2_CTL accordingly.
[Test]
Verified on the problematic panels to check if the display responds smoothly
to mouse movement.
[Where problems could occur]
Only affects the panels on some particular panels which supports PSR2
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