APPLIED: [PATCH][SRU][Bionic] HP workstations cannot output to external monitors by dGPU

[Khaled Elmously]

On 2019-01-07 08:13:20 , Alex Hung wrote:
> BugLink: http://bugs.launchpad.net/bugs/1810702
> 
> [Impact]
> 
>   HP mobile workstations are able to output to external monitors by dGPU in
>   Windows with hybrid graphics, but this is not supported by Linux GPU
>   drivers. As a result, this feature needs to be supported by BIOS but
>   an _OSI string is required.
> 
> [Fix]
>   BIOS added solutions with _OSI string "Linux-HPI-Hybrid-Graphics" to
>   workaround, and a patch to report _OSI("Linux-HPI-Hybrid-Graphics")
>   is required in Linux kernel.
> 
>   The patches are included in upstream and are cherry-picked from Linus's repo.
> 
> [Regression potential]
>   No regression as all but targeted firmware will not use this _OSI string
> 
> 
> Alex Hung (1):
>   ACPI / OSI: Add OEM _OSI string to enable dGPU direct output
> 
>  drivers/acpi/osi.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> -- 
> 2.7.4
> 
> 
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