On Sun, Mar 13, 2011 at 09:17:53AM -0700, Greg KH wrote: > On Sun, Mar 13, 2011 at 12:03:20PM +0200, Nikolai Kondrashov wrote: > > Sometime ago I've found this hack on some forum, which I use currently > > to set the brightness: > > > > setpci -s 00:02.0 f4.b="$HEX_BYTE" > > > > It allows finer control of the brightness, but it seems it operates directly > > on the video card PCI register. I assume there is no sane way to use > > this interface from the platform driver, right? > > Yes, do not do this, it causes all sorts of problems in the end, not the > least being the BIOS doesn't know what is going on at all as you are > changing the brightness without it knowing it. It's also modifying configuration that belongs to a device being managed by another driver, so it's the kind of thing we frown upon. Having said that, the Intel driver should gain native backlight support in .39. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
