On Tue, Aug 21, 2012 at 9:12 PM, William Cohen <giantklein@xxxxxxxxx> wrote: > I don't entirely understand how to read the disassembled output in DSDT.dsl, > but The LID device seems to have some other checks in there before returning > 0x01 (open) or 0x00 (closed): That appears to be identical to my X220, which doesn't have a colorimeter. Try i915.intel_panel_ignore_lid=1. If that fails, try asking intel-gfx for help. If it succeeds, try asking the intel-gfx or the dri list for how to support this use case for real. (That assumes that your Optimus configuration is actually using the i915 driver to control the panel.) --Andy