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[SRU,OEM-5.17,0/1] Fix output issue of USB-C to DP dongle on AMD

Message ID 20220905084249.1463807-1-aaron.ma@canonical.com
Headers show
Series Fix output issue of USB-C to DP dongle on AMD | expand

Message

Aaron Ma Sept. 5, 2022, 8:42 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1988721

[Impact]
There is no output of external 4k DP monitor via USB-C to DP dongle.

[Fix]
Isolate link training sequence, the external DP monitor will be good.

[Test]
Verified on hardware, external 4k monitor works fine after re-plugin and suspend.

[Where problems could occur]
It may break the display output on AMD GPU.

This commit is from 5.18-rc1, and no issue on jammy kernel.
SRU for oem-5.17 only.

George Shen (1):
  drm/amd/display: Refactor fixed VS logic for non-transparent mode

 .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 102 +++++++++++++++++-
 1 file changed, 97 insertions(+), 5 deletions(-)

Comments

Timo Aaltonen Sept. 8, 2022, 1:46 p.m. UTC | #1 
Aaron Ma kirjoitti 5.9.2022 klo 11.42:
> BugLink: https://bugs.launchpad.net/bugs/1988721
> 
> [Impact]
> There is no output of external 4k DP monitor via USB-C to DP dongle.
> 
> [Fix]
> Isolate link training sequence, the external DP monitor will be good.
> 
> [Test]
> Verified on hardware, external 4k monitor works fine after re-plugin and suspend.
> 
> [Where problems could occur]
> It may break the display output on AMD GPU.
> 
> This commit is from 5.18-rc1, and no issue on jammy kernel.
> SRU for oem-5.17 only.
> 
> George Shen (1):
>    drm/amd/display: Refactor fixed VS logic for non-transparent mode
> 
>   .../gpu/drm/amd/display/dc/core/dc_link_dp.c  | 102 +++++++++++++++++-
>   1 file changed, 97 insertions(+), 5 deletions(-)
> 

applied to oem-5.17, thanks