APPLIED: [SRU][H][PATCH 0/1] Fix no external DP output on some monitors
Kleber Souza
kleber.souza at canonical.com
Tue Aug 31 13:28:57 UTC 2021
On 17.08.21 08:18, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1938999
>
> [Impact]
> External displays not working on Thinkpad T490 with ThinkPad Thunderbolt
> 3 Dock
>
> [Fix]
> Some SKL systems DP output fails when AUX timeout of LTTPR detection.
> Disable the LTTPR detection until GLK to fix the link training.
>
> [Test]
> Verified on hardware, external DP work fine.
>
> [Where problems could occur]
> It may break output of external DP.
>
> This patch from 5.12-rc5, only Hirsute kernel is SRUed.
>
> Imre Deak (1):
> drm/i915/ilk-glk: Fix link training on links with LTTPRs
>
> drivers/gpu/drm/i915/display/intel_dp.c | 7 +++++++
> .../gpu/drm/i915/display/intel_dp_link_training.c | 15 ++++++++++++---
> 2 files changed, 19 insertions(+), 3 deletions(-)
>
Applied to hirsute:linux.
Thanks,
Kleber
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