Public bug reported:
[Impact]
In Dell oem project, we found the graphic is flickering on some
machines, finally we narrowed down the issue on (some specific panels +
i915.psr2 enabled), and the issue was reported to Intel, Intel fixed
the issue in the most recent mainline kernel.
It is hard to backport the patches to oem-6.5, so we wrote
a workaround patch to disable the psr2 for those pannels in the oem-6.5.
[Fix]
A quirk to disable psr2 on the AUO panel.
The real fix has been merged into noble and 6.8-oem kernels.
[Test]
1. boot up and moving the cursor around every cornors of the screen
2. it should shows the graphics well and no flicks
[Where problems could occur]
The quirk only affects the listed panel, so there should be no impact on other
panels.
And disable psr2 never introduce regressions, just impact run time power
consumption a little bit.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux-oem-6.5 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-6.5 (Ubuntu Jammy)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Tags: oem-priority originate-from-2067366 somerville
** Also affects: linux-oem-6.5 (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Status: New => In Progress
** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux-oem-6.5 (Ubuntu)
Status: New => Invalid
** Tags added: oem-priority originate-from-2067366 somerville
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https://bugs.launchpad.net/bugs/2067980
Title:
Disable the i915.psr2 on AUO(0x06,0xaf,0xa3,0xc3) panel
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