Commit fdc93bee authored by Alex Hung's avatar Alex Hung Committed by Alex Deucher
Browse files

drm/amd/display: Fix black screen with HDMI outputs 



[Why & How]
This fixes the black screen issue on certain APUs with HDMI,
accompanied by the following messages:

amdgpu 0000:c4:00.0: amdgpu: [drm] Failed to setup vendor info
                     frame on connector DP-1: -22
amdgpu 0000:c4:00.0: [drm] Cannot find any crtc or sizes [drm]
                     Cannot find any crtc or sizes

Fixes: 489f0f60 ("drm/amd/display: Fix DVI-D/HDMI adapters")
Suggested-by: default avatarTimur Kristóf <timur.kristof@gmail.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Hung <alex.hung@amd.com>
Signed-off-by: default avatarRay Wu <ray.wu@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 678c9014)
parent 3362692f

drivers/gpu/drm/amd/display/dc/link/link_detection.c

+1 −0
Original line number Diff line number Diff line
@@ -1141,6 +1141,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, 
		    !sink->edid_caps.edid_hdmi)

			sink->sink_signal = SIGNAL_TYPE_DVI_SINGLE_LINK;

		else if (dc_is_dvi_signal(sink->sink_signal) &&

			 dc_is_dvi_signal(link->connector_signal) &&

			 aud_support->hdmi_audio_native &&

			 sink->edid_caps.edid_hdmi)

			sink->sink_signal = SIGNAL_TYPE_HDMI_TYPE_A;