http://bugzilla.kernel.org/show_bug.cgi?id=14997
--- Comment #14 from Jesse Barnes <jbar...@virtuousgeek.org> 2010-02-12
17:57:23 ---
Right, that makes sense, thanks Takashi. What *should* happen is that at close
time, we just send an event to userspace which may choose to reconfigure your
outputs.
But if your ACPI lid status is wrong (i.e. acpi_lid_open returns true when your
lid is closed) then we'd reset the mode at close time as well, turning off
LVDS. Then at open time we'd reset and keep the lost the LVDS output, but
again userspace could choose to reconfigure (but if your LID is lying it'll see
"disconnected").
Assuming that's what's going on here, in the intel_lid_notify() function we
need to add the DMI check:
diff --git a/drivers/gpu/drm/i915/intel_lvds.c
b/drivers/gpu/drm/i915/intel_lvds
index 75a9772..d03f6d4 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -708,7 +712,7 @@ static int intel_lid_notify(struct notifier_block *nb,
unsig
*/
if (connector)
connector->status = connector->funcs->detect(connector);
- if (!acpi_lid_open()) {
+ if (dmi_check_system(bad_lid_status) || !acpi_lid_open()) {
dev_priv->modeset_on_lid = 1;
return NOTIFY_OK;
}
then make sure these machines are added to the DMI list.
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