On Wed, 21 Feb 2007, Richard Purdie wrote: > enabled. On a thinkpad, the backlight is probably under ACPI control.
BIOS+ACPI, actually. Without ACPI video loaded, the firmware does everything correctly. With ACPI video, the firmware does it, then its changes are clobbered over by ACPI video's. If ibm-acpi is loaded, a backlight device "ibm" is added. ibm-acpi's ibm backlight device can change the display brightness. It is *not* capable of turning the backlight on or off, AFAIK. BTW, some ThinkPads don't have a Radeon, but rather an Intel GM/GMX device. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
