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| author | Ilya <[email protected]> | 2022-02-10 16:09:33 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2022-02-23 19:22:03 +0000 |
| commit | 10a9accd4842e6098cc27d79d43d7542254003bc (patch) | |
| tree | dd8197a1380d55be8e766a5c060ec40225b54c2e /drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | |
| parent | drm/amd/display: Refactor PSR DPCD caps detection (diff) | |
| download | kernel-10a9accd4842e6098cc27d79d43d7542254003bc.tar.gz kernel-10a9accd4842e6098cc27d79d43d7542254003bc.zip | |
drm/amd/display: Fix wrong resolution with DP/VGA adapter
[Why]
Hotplugging the VGA side of some DP/VGA adapters caused the display to
light up with the wrong (non-native) resolution.
This is caused by the adapter misbehaving by reporting the wrong number
of downstream ports when the VGA side is unplugged (reports 1 instead of
0), but only if the SINK_COUNT DPCD register is read more than once.
[How]
To work around the adapter behavior, remove the sink if link is
detected, but EDID cannot be read.
Reviewed-by: Wenjing Liu <[email protected]>
Acked-by: Solomon Chiu <[email protected]>
Signed-off-by: Ilya <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c')
0 files changed, 0 insertions, 0 deletions