** Changed in: linux (Ubuntu Plucky)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/2103617

Title:
  [SRU] Fix screen flickering in inverted display mode

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-6.11 package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  Invalid
Status in linux-oem-6.11 source package in Noble:
  Fix Released
Status in linux source package in Plucky:
  In Progress
Status in linux-oem-6.11 source package in Plucky:
  Invalid

Bug description:
  [Impact]
  On Intel LNL, after screen is inverted by "gnome-randr modify eDP-1 --rotate 
inverted"
  Move cursor, the screen will get flicker, with the error in dmesg:
  xe 0000:00:02.0: [drm] ERROR Fault errors on pipe A: 0x00040080

  [Fix]
  Intel provided a patch to fix it.
  https://patchwork.freedesktop.org/patch/627668/?series=136033&rev=4
  https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/3992

  [Test]
  Tested on Intel LNL and MTL, screens are normal on all rotate mode,
  and suspend/resume for 100 times on both LNL and MTL with positive results.

  [Where problems could occur]
  It may break i915 and xe driver.

  
  SRU for oem-6.11 and plucky which supports LNL.

  LP:2103981 already merged the commit for plucky:
  67a98f7e27ba ("drm/xe/display: Re-use display vmas when possible")
  Add the fixed commit in this SRU only for plucky.

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