[Why]
Common modes are added to LVDS for compatibility in clone mode, but
not all panels support them. Non-native modes were disabled in the past
but this caused problems because compositors didn't use scaling for non
native modes. Now non-native modes on LVDS will enable the scaler by
default.
[How]
Check the connector type. If the connector is LVDS avoid adding common
modes.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 3dd4f9e9931d2..7a4fca9a61bbe 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8374,7 +8374,8 @@ static int amdgpu_dm_connector_get_modes(struct
drm_connector *connector)
drm_add_modes_noedid(connector, 1920, 1080);
} else {
amdgpu_dm_connector_ddc_get_modes(connector, drm_edid);
- if (encoder && connector->connector_type !=
DRM_MODE_CONNECTOR_eDP)
+ if (encoder && (connector->connector_type !=
DRM_MODE_CONNECTOR_eDP) &&
+ (connector->connector_type != DRM_MODE_CONNECTOR_LVDS))
amdgpu_dm_connector_add_common_modes(encoder,
connector);
amdgpu_dm_connector_add_freesync_modes(connector, drm_edid);
}
--
2.50.0
