Dear Michal, Here is my old post to this list where I worked out a solution working with both NVIDIA and INTEL cards.. There is some overlap with what has been said above.. Hope this may be useful.. Best, Romuald ---------------------------------------------------------------------------------------------------------------------------
Dear All, I managed to find a solution which works for both nvidia and intel cards. I used some info from http://ubuntuforums.org/showthread.php?t=784671 for acpi events (note they are different for Z31) and a different script. Since this may be useful for someone I include the setup below. 1) Make the file /etc/acpi/events/sony-brightness-up with the contents: event=sony/hotkey SNC 00000001 40000011 action=/usr/local/bin/vaioz-brightness up 2) Make the file /etc/acpi/events/sony-brightness-down with the contents: event=sony/hotkey SNC 00000001 40000010 action=/usr/local/bin/vaioz-brightness down 3) Make the script /usr/local/bin/vaioz-brightness #!/bin/bash lspci | grep "00:02.0" >/dev/null INTELQ=$? if [ $INTELQ == 0 ] then LEVEL=$(cat /sys/class/backlight/acpi_video0/brightness) else LEVEL=$(cat /sys/class/backlight/sony/brightness) fi if [ $1 == 'up' ]; then let LEVEL+=1; fi if [ $1 == 'down' ]; then let LEVEL-=1; fi if (( $LEVEL>7 )); then LEVEL=7; fi if (( $LEVEL<0 )); then LEVEL=0; fi let LEVEL=16+$LEVEL*12 if [ $INTELQ == 0 ]; then #intel INTEL_LEVEL=$(( $LEVEL*255/100 )) BRL=$(printf "%02X" $INTEL_LEVEL) setpci -s 00:02.0 F4.B=$BRL else #nvidia smartdimmer -s $LEVEL fi 4) restart acpi system sudo /etc/init.d/acpid restart The event codes were obtained by running acpi_listen Best wishes, Romuald _______________________________________________ Mailing list: https://launchpad.net/~sony-vaio-z-series Post to : sony-vaio-z-series@lists.launchpad.net Unsubscribe : https://launchpad.net/~sony-vaio-z-series More help : https://help.launchpad.net/ListHelp