http://bugzilla.kernel.org/show_bug.cgi?id=9995
------- Comment #18 from [EMAIL PROTECTED] 2008-02-25 19:43 ------- (In reply to comment #17) > I expect the problem is: > - The external graphics ACPI device is using the traditional method to > switch > brightness, it also works for the internal (Intel) graphics device We don't have an external graphics card on this laptop, how could the ACPI control methods work? This is a BIOS problem to me. > - The internal ACPI graphics device (Intel card) is using a feature that > needs > in kernel graphics driver support. > This needs fixing in BIOS and I expect Lenovo is willing to do this. > Intel should discuss this internally with their graphics drivers programmers > and provide a OSI ability string. The Intel IGD Opregion Support is on the way. But it mainly changes the behavior of events handling, like display switch hotkey events, lid close/open and dock/undock. A SCI is fired upon these events, notify the ACPI video device and ACPI video driver notify the Intel video driver to do the actual work by poking the proper OpRegion fields. IMO, _BCM/_BCL/_BQC methods should work anyway. I'll look at the AML code later. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
