On Wed, Oct 11, 2006 at 08:59:04AM +0200, Arjan van de Ven wrote: > it'd also be nice if the linux-ready firmware developer kit had a test > for this, so that we can offer 1) a way to test this to the bios guys > and 2) encourage adding/note the lack easily Sure. Reading /proc/acpi/video/*/*/info should tell you whether a device is an LCD or not. The brightness file should then contain a list of available brightnesses, and writing one into there should change the screen value. There's a patch somewhere that ports this to the /sys/class/backlight infrastructure, but I don't think it's applied yet. I'd write a test up for you, but I don't actually seem to have any hardware that implements this properly. Tch. -- 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
