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

[Stefan Bader]

On 15.07.21 09:11, Kai-Heng Feng wrote:
> 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(+)
> 
Acked-by: Stefan Bader <stefan.bader at canonical.com>

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