mbox series

[0/1,SRU,OEM-5.6] Fix no video out from some monitors on amdgpu

Message ID 20201023070723.21665-1-aaron.ma@canonical.com
Headers show
Series Fix no video out from some monitors on amdgpu | expand

Message

Aaron Ma Oct. 23, 2020, 7:07 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1901135

[Impact]
On some models of Dell monitors, amdgpu lost signal.
Blackscreen only.

[Fix]
Handle aux write failure, and retry it to fix it.

[Test Case]
Verified on the monitors, display OK.

[Regression Potential]
Low,
Upstream fix, Verified with positive results.
Focal and Groovy already got this fix.

Wayne Lin (1):
  drm/amd/display: Retry AUX write when fail occurs

 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Timo Aaltonen Nov. 11, 2020, 6:32 a.m. UTC | #1 
On 23.10.2020 10.07, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1901135
> 
> [Impact]
> On some models of Dell monitors, amdgpu lost signal.
> Blackscreen only.
> 
> [Fix]
> Handle aux write failure, and retry it to fix it.
> 
> [Test Case]
> Verified on the monitors, display OK.
> 
> [Regression Potential]
> Low,
> Upstream fix, Verified with positive results.
> Focal and Groovy already got this fix.
> 
> Wayne Lin (1):
>    drm/amd/display: Retry AUX write when fail occurs
> 
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 

applied to oem-5.6, thanks