** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.5 (Ubuntu Noble)
Importance: High
Assignee: Hui Wang (hui.wang)
Status: Invalid
** Changed in: linux (Ubuntu Jammy)
Status: New => Invalid
** Changed in: linux-oem-6.5 (Ubuntu Noble)
Status: Invalid => Triaged
** Changed in: linux (Ubuntu Noble)
Status: New => Triaged
** Changed in: linux-oem-6.5 (Ubuntu Noble)
Status: Triaged => New
** Changed in: linux (Ubuntu Noble)
Assignee: (unassigned) => Hui Wang (hui.wang)
** Changed in: linux (Ubuntu Noble)
Importance: Undecided => High
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.5 in Ubuntu.
https://bugs.launchpad.net/bugs/2046681
Title:
jammy-oem-6.5: one more panel needs to disable psr2
Status in HWE Next:
New
Status in linux package in Ubuntu:
Triaged
Status in linux-oem-6.5 package in Ubuntu:
New
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.5 source package in Jammy:
In Progress
Status in linux source package in Noble:
Triaged
Status in linux-oem-6.5 source package in Noble:
New
Bug description:
BugLink: https://bugs.launchpad.net/bugs/2046681
[Impact]
The customer Dell provide the edid for one more panel, this panel also needs
to disable the psr2, otherwise the display will not work correctly
[Fix]
There is no real fix so far, ODM recommends to use a workaround to disable
PSR2, this is a temp solution, after we get the real fix, we could revert the
temp workaround.
[Test case]
booting with the patched kernel, If the pannel's edid is in the qurik
list, the PSR2 will be disabled (checking
/sys/kernel/debug/dri/0/i915_edp_psr_status; if the pannel's edid is
not in the quirk list, the graphic driver will work as before.
[Where problems could occur]
It is possible that the temp solution couldn't work, then the screen will
still show garbage and the screen is flicking, another possible regression is
the screen has no problem before, but after running patched kernel, the PSR2 is
disabled and the system cost more power, but this possibility is very low, I
tested the patched on some dell machines, all worked well.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2046681/+subscriptions
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