[v2][SRU][PATCH 0/2][J/OEM-5.17/K/U] Fix blank screen on Thinkpad ADL 4K+ panel

Kleber Souza kleber.sacilotto.de.souza at canonical.com
Mon Oct 17 09:05:45 UTC 2022


On 10.09.22 02:16, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1980621
> 
> [Impact]
> Set screen off on ThinkPad P1G5 with 4k+ panel.
> The screen will never be back.
> 
> [Fix]
> Reload link rate as WA to fix the issue.
> 
> [Test]
> Verified on hardware, screen on/off 20 times OK.
> 
> [Where problems could occur]
> It may break DP output on Intel platform.
> 
> Ville Syrjälä (2):
>    drm/i915: Implement WaEdpLinkRateDataReload
>    Revert "drm/i915/display: Re-add check for low voltage sku for max dp
>      source rate"
> 
>   drivers/gpu/drm/i915/display/intel_dp.c       | 32 ++-----------------
>   .../drm/i915/display/intel_dp_link_training.c | 22 +++++++++++++
>   2 files changed, 25 insertions(+), 29 deletions(-)
> 

Hi Aaron,

How about the revert of the backport of "73867c8709b5 drm/i915/display: Remove
check for low voltage sku for max dp source rate" which was sent on V1, is
the revert no needed anymore?


Thanks,
Kleber



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