On Wednesday, October 28, 2015 03:09:23 PM Aaron Lu wrote: > The firmware of ESPRIMO Mobile M9410 has two video output devices that > have _BCM control method, one is the type of "External Digital Monitor" > while the other is the type of "Internal/Integrated Digital Flat Panel". > Only the 2nd video output device's _BCM control method works, but > since we have created two and the 1st one got picked up by user space, > the backlight functionality is broken. To solve this problem, only > register backlight interface for "Internal/Integrated Digital Flat Panel" > type video output device on this laptop. > > Another problem of this laptop is that the IDs listed by the _DOD method > doesn't have bit 31 set, which means it doesn't follow the format > specified by ACPI spec. But the value indicates that it actually follows > that format so I've added a DMI quirk and a module level parameter to > force use the device_id_scheme so that we can get the video output > device's type to do the decision if we should register backlight > interface. > > Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=104121 > Suggested-by: Hans de Goede <hdegoede@xxxxxxxxxx> > Reported-and-tested-by: Christian Scharl <zahlsum-kernelbugs@xxxxxxxx> > Signed-off-by: Aaron Lu <aaron.lu@xxxxxxxxx> Applied, thanks! Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
