On Wednesday, April 30, 2008 1:52 am Yves-Alexis Perez wrote: > Hi, > > I wanted to ask if there was any progress on the understanding of the > situation? > > I have a Thinkpad T61 (8897 with intel G965), running Linux 2.6.25 > (vanilla+thinkpad-acpi 0.19-20080321, but I can test with debian 2.6.25) > and xserver-xorg-video-intel 2.3.0-1 (experimental). > > Brightness keys sure don't work out of the box (nor in console nor in > Xorg). > > acpid, powersaved and hald are running. I can stop them for testing if > needed. > > The driver by default uses the BACKLIGHT_CONTROL "kernel". > > xbacklight works fine. > > I have a /sys/class/backlight/acpi_video0 and 1. acpi_video0 does nothing, > but using acpi_video1 and echo'ing 0-15 to brightness works. But in that > case, xbacklight is lost. > > xbacklight =100 > # brightness is at full level > cat /sys/class/backlight/acpi_video1/actual_brightness > 15 # acpi_video1 agree > echo 0 > /sys/class/backlight/acpi_video1/brightness > # brightness is at minimum level (but is not off, while it has worked at > one # time) > cat /sys/class/backlight/acpi_video1/actual_brightness > 0 # acpi_video1 agree > xbacklight > 100 # xbacklight disagree.
This is an X server & driver problem. I fixed it recently, so if you build the Intel X driver against new server bits (or just wait until 1.5), xbacklight should fetch the current value. > That's even without trying brightness keys. > > Pressing brightness keys generates here acpi events video LCD0 87/86 (with > some delay, but I guess this one is a kernel problem). Nobody seems to > catch it, nor hal, nor powersaved, nor X driver. I think in some kernel versions it'll send a keyboard event that you can make a desktop applet catch? Jesse -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
