If you plug in a DVI monitor to your HDMI port, you need to filter out clocks > 165MHz. That's because 165MHz is the maximum clock rate that we can run single-link DVI at. If you want to run high resolutions to DVI, you'd need some type of an active adapter that pretended that it was HDMI, interpreted the signal, and produced a new dual link DVI signal at a lower clock rate. Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx> --- Note: this patch was tested against a 3.14 kernel with backports. It was only compile tested against linuxnext, but the code is sufficiently similar that I'm convinced it will work there. drivers/gpu/drm/bridge/dw_hdmi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 816d104..48b8532 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -1421,8 +1421,12 @@ dw_hdmi_connector_mode_valid(struct drm_connector *connector, { struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, connector); + struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode; enum drm_mode_status mode_status = MODE_OK; + if (mode->clock > 165000 && vmode->mdvi) + return MODE_BAD; + if (hdmi->plat_data->mode_valid) mode_status = hdmi->plat_data->mode_valid(connector, mode); -- 2.4.3.573.g4eafbef _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel