On Thu, Mar 15, 2012 at 10:47:56AM -0500, Seth Forshee wrote: > Turns out that acpi_video0 does work under Windows, and it also works > under Linux depending on how the OS is booted. Doing a boot camp style > boot gives us working acpi_video0 and apple_bl backlights. acpi_video1 > doesn't show up in a legacy boot situation, as evaluating _BCM gives an > error. > > Under EFI boot, both acpi_video backlights show up but neither works. > The readback verify in apple_bl's probe fails, so that one doesn't show > up. Only gmux_backlight actually works. Ok, that's consistent. You can probably handle that case by just calling acpi_video_unregister() in gmux. Something like your patch looks fine for the apple_bl case. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
