drm/i915: blacklist Acer AspireOne lid status

It reports closed when open, leading to "no outputs found" at startup
unless a VGA cable is plugged in.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index c1cc5566e20b..98ae3d73577e 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -591,6 +591,18 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder,
         I915_WRITE(PFIT_CONTROL, lvds_priv->pfit_control);
 }
 
+/* Some lid devices report incorrect lid status, assume they're connected */
+static const struct dmi_system_id bad_lid_status[] = {
+        {
+                .ident = "Aspire One",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire one"),
+                },
+        },
+        { }
+};
+
 /**
  * Detect the LVDS connection.
  *
@@ -602,7 +614,7 @@ static enum drm_connector_status intel_lvds_detect(struct drm_connector *connect
 {
         enum drm_connector_status status = connector_status_connected;
 
-        if (!acpi_lid_open())
+        if (!acpi_lid_open() && !dmi_check_system(bad_lid_status))
                 status = connector_status_disconnected;
 
         return status;