[SRU] [H/I/OEM-5.10/OEM-5.13] [PATCH 0/1] Fix display output on HP hybrid GFX laptops

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1936296

[Impact]
Video output MUX switched from Intel GPU to Nvidia GPU after S3, so
display settings are lost.

[Fix]
Always use Nvidia GPU to do the video output. This matches the behavior
on the other OS.

[Test]
Connect and external monitor, and change the scaling factor or
resolution, suspend the laptop.
After wakeup, the custom monitor setting is kept.

[Where problems could occur]
If nvidia.ko or nouveau.ko is blacklisted, the video output may stop
working, as it's now routed away from i915 device.

Kai-Heng Feng (1):
  drm/i915: Invoke another _DSM to enable MUX on HP Workstation laptops

 drivers/gpu/drm/i915/display/intel_acpi.c     | 19 +++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_acpi.h     |  3 +++
 drivers/gpu/drm/i915/display/intel_opregion.c |  3 +++
 3 files changed, 25 insertions(+)

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2.31.1