Requesting comments on this idea (proposed by Matthew Garrett) and my implementation. Note especially the KNOWN PROBLEM with a "GM45" GPU. -Kamal ....... BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/568611 In order to avoid the often-dysfunctional native acpi brightness control methods, a new acpi_brightness_hook interface is made available. The i915 driver uses the new hook to take over brightness control. Boot with i915.brightness=0 to disable. KNOWN PROBLEM: - i915 opregion brightness control silently fails on GM45 (pci-id 0x2a42) [RFC PATCH 1/2] acpi/video: acpi_brightness_hook API [RFC PATCH 2/2] drm/i915: override acpi brightness control -- 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
