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Commit 7b9c5abe authored by Jesse Barnes's avatar Jesse Barnes Committed by Eric Anholt
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drm/i915: give up on 8xx lid status 



These old machines more often than not lie about their lid state.  So
don't use it to detect LVDS presence, but leave the event handler to
deal with lid open/close, when we might need to reset the mode.

Fixes kernel bug #15248

Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent f590d279

drivers/gpu/drm/i915/intel_lvds.c

+7 −0
Original line number Diff line number Diff line
@@ -648,8 +648,15 @@ static const struct dmi_system_id bad_lid_status[] = { 
 */

static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector)

{

	struct drm_device *dev = connector->dev;

	enum drm_connector_status status = connector_status_connected;



	/* ACPI lid methods were generally unreliable in this generation, so

	 * don't even bother.

	 */

	if (IS_I8XX(dev))

		return connector_status_connected;



	if (!dmi_check_system(bad_lid_status) && !acpi_lid_open())

		status = connector_status_disconnected;