[Daniel Vetter] >> Is there some other quirk table for acpi that also need to be updated? > > If the acpi brightness controller is broken, it needs to be quirked > away. For that please file a bug report against the ACPI subsystem. Right. Where do I do that? I can do it if I know what to do. :) > With that done the automagic fallback rules of the intel DDX driver > should expose the "right" backlight interface through the backlight > xrandr property. If KDE's powerdevil isn't using that one (and frobs > around with the backlight controllers directly) that'd be a bug in > kde. I discovered that by adding acpi_backlight=vendor and keeping the i915.invert_brightness=1 setting, the screen went black again. So these settings seem to cancel each other out. But if I remove i915.invert_brightness=1, the screen no longer turn black, and KDE no longer turn off the screen when I log in, because instead of using the acpi_backlight interface it is using the intel_backlight interface, which is not inverted. So I wonder, perhaps i915.invert_brightness=1 is the wrong quirk for this machine? -- Happy hacking Petter Reinholdtsen _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel