Pour la luminosité, j'ai trouvé un truc, ça marche:
lspci | grep VGA (write the device adress, mine is 00:02.0)
setpci -s 00:02.0 F4.B=66 (a value between 00 and FF, where FF is 100%)
De source
http://www.linlap.com/wiki/lenovo+ideapad+u350
Autre option, également lue là bas:
It worked! It's enought going to bios or bootmenu and with FN+UP/DOWN you can change the backlight. And this setting is permanent.
Ca peut servir à d'autres:
# cat brightness.sh
#!/bin/bash
/sbin/setpci -s `/sbin/lspci | /bin/grep VGA | cut -f1 -d " "` F4.B=$1
# ln brightness.sh /bin/brightness
# /bin/brightness 77
# /bin/brightness 66
# brightness 55
# uname -a
Linux ... 2.6.33.4-95.fc13.x86_64 ...