On Wed, Apr 15, 2009 at 09:55:55PM +0200, Niel Lambrechts wrote: > The behaviour seems slightly different from before your 74a365b3f354 > commit in that /sys/class/backlight remains empty until i915 gets loaded > for the first time, the contents then persist even if i915 is unloaded. > Perhaps the directory was populated by a different kernel module, since > when I did the bisect yesterday the directory would be there on boot > before I started X or loaded i915. In the past the directory would be created when the acpi video driver was loaded, but probably wouldn't work. Doing it that way is a violation of the opregion spec and causes some machines to break in a horrible manner, so I'd prefer not to go back to that version... > I'm not sure if that matters to any other user-space app. (or if > ideally one is supposed to be able to control brightness in the console > without having to load i915), but it's fine for controlling brightness > in Xorg. If you use modesetting then you shouldn't need to launch X to get working brightness control. The problem with the old-style world is that you won't get interrupts until X comes up. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
