Fix flicker display problem on some panels which support PSR2
Bug #2002968 reported by
Chris Chiu
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
New
|
Undecided
|
Unassigned | ||
OEM Priority Project |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Jammy |
Invalid
|
Undecided
|
Unassigned | ||
Lunar |
Fix Released
|
Undecided
|
Chris Chiu | ||
linux-oem-6.0 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Undecided
|
Unassigned | ||
Lunar |
Invalid
|
Undecided
|
Unassigned | ||
linux-oem-6.1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Undecided
|
Unassigned | ||
Lunar |
Invalid
|
Undecided
|
Unassigned |
Bug Description
[Impact]
On some PSR2 supported panels, which connects to Intel Graphics has flicker symptom. It gets normal after booting the kernel with parameter `i915. enable_psr=0`
[Fix]
Backport one patch from upstream. https:/
[Test]
Booting the patched kernel with problematic panel (LGD LCD_VD78M), check if the display has abnormal flickering problem on graphics interfaces.
[Where problems could occur]
The risk of regression is low. It only fixes problem on panels which support PSR2.
CVE References
tags: | added: oem-priority originate-from-2002621 white-whale |
Changed in linux-oem-6.0 (Ubuntu Jammy): | |
status: | New → In Progress |
Changed in linux-oem-6.1 (Ubuntu Jammy): | |
status: | New → In Progress |
tags: | added: originate-from-2002824 |
tags: | added: originate-from-2001736 |
tags: | added: originate-from-2004217 stella |
tags: | removed: originate-from-2004217 stella |
Changed in linux-oem-6.0 (Ubuntu Lunar): | |
status: | New → Invalid |
Changed in linux-oem-6.1 (Ubuntu Lunar): | |
status: | New → Invalid |
tags: |
added: verification-done-jammy removed: verification-needed-jammy |
Changed in linux (Ubuntu Jammy): | |
status: | Incomplete → Invalid |
Changed in linux (Ubuntu Lunar): | |
assignee: | nobody → Chris Chiu (mschiu77) |
status: | Incomplete → In Progress |
Changed in linux (Ubuntu Lunar): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | Incomplete → Fix Released |
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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 2002968
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.