On Thu, Aug 28, 2025 at 10:18 AM Mario Limonciello (AMD) <[email protected]> wrote: > > [Why] > Although compositors will add their own modes, Xorg won't use it's own > modes and will only stick to modes advertised by the driver. This mean a > user that used to pick 1024x768 could no longer access it unless the > panel's native resolution was 1024x768. > > [How] > Revert commit 6d396e7ac1ce3 ("drm/amd/display: Disable common modes for > LVDS") and commit 7948afb46af92 ("drm/amd/display: Disable common modes > for eDP"). > > The panel will still use scaling for any non-native modes due to > commit 978fa2f6d0b12 ("drm/amd/display: Use scaling for non-native > resolutions on eDP") > > Reported-by: Marek Marczykowski-Górecki <[email protected]> > Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4538 > Signed-off-by: Mario Limonciello (AMD) <[email protected]>
Acked-by: Alex Deucher <[email protected]> > --- > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > 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 d533bd633f163..bb156c26a08ee 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c > @@ -8440,8 +8440,7 @@ 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) && > - (connector->connector_type != DRM_MODE_CONNECTOR_LVDS)) > + if (encoder) > amdgpu_dm_connector_add_common_modes(encoder, > connector); > amdgpu_dm_connector_add_freesync_modes(connector, drm_edid); > } > -- > 2.43.0 >
