Some monitors return that they're disconnected while powered off but the EDID can still be accessed. Before determining that a link is not available, try to access the EDID. Reported-and-suggested-by: dark_sylinc@xxxxxxxxxxxx Link: https://gitlab.freedesktop.org/drm/amd/-/issues/461 Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> --- Cc: Harry Wentland <Harry.Wentland@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/link/link_detection.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index c9b6676eaf53..26a739128dd3 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -1233,6 +1233,8 @@ bool link_detect_connection_type(struct dc_link *link, enum dc_connection_type * if (is_hpd_high) { *type = dc_connection_single; /* TODO: need to do the actual detection */ + } else if (dm_helpers_read_local_edid(link->ctx, link, link->local_sink) == EDID_OK) { + *type = dc_connection_single; } else { *type = dc_connection_none; if (link->connector_signal == SIGNAL_TYPE_EDP) { -- 2.34.1
