Patches for Noble is now under review:
https://lists.ubuntu.com/archives/kernel-team/2024-August/152815.html

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https://bugs.launchpad.net/bugs/2069993

Title:
  Panels show garbage or flickering when i915.psr2 enabled

Status in linux package in Ubuntu:
  New
Status in linux-oem-6.8 package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  Confirmed
Status in linux-oem-6.8 source package in Noble:
  Fix Released

Bug description:
  SRU verification for oem-6.8-noble:

  [Impact]
  In https://bugs.launchpad.net/ubuntu/+source/linux-oem-6.5/+bug/2046315,
  we've cherry-picked the 8 patches from the most recent mainline kernel to 
oem-6.8
  to fix the panel flickering problem in the Dell OEM project. However,
  OEM reports that the patches have regression on 6.8.0-1006-oem.

  For now, we apply the workaround patches from oem-6.5 to fix the bug.
  In the meantime, we've reported the issue to Intel and are waiting for the 
fix.
  Once the fix is available in the mainline kernel, we'll backport the fix into
  oem-6.8 kernel and revert the workaround patches.

  Upstream bug: https://gitlab.freedesktop.org/drm/intel/-/issues/9739

  [Fix]
  Apply workaround patches from oem-6.5 to oem-6.8

  [Test Plan]
  The machines mentioned in the attachment (containing the problematic panel's 
EDID) would have flickering graphics with the linux-6.8.0-1006-oem kernel.

  The flickering graphic is gone after applying the workaround patches.

  [Where problems could occur]
  The workaround patches add some quirks that disable PSR2 on some panels. So 
far, there are 7 panels listed in the quirks (other panels used by OEM products 
are flickering-free without the patches).

  If OEM starts using other panels in the future, it's not sure that the
  panels will be flickering-free.

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