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

Koba Ko koba.ko at canonical.com
Tue Sep 13 05:23:12 UTC 2022


This would not cause LP#1961653 to regress.

On Sat, Sep 10, 2022 at 8:17 AM Aaron Ma <aaron.ma at canonical.com> 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(-)
>
> --
> 2.34.1
>
>
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