The "echo -n VALUE > /proc/acpi/video/VGA/LCD/brightness" does not work on my Vostro 1000 on Ubuntu 7.10 64bit. It gives "bash: /proc/.../brightness: Permission denied". If I do "cat /proc/.../brightness" it gives:
levels: 100 37 12 25 37 50 62 75 87 100 current: 0
Also, the brightness keys are working in the GRUB menu.
The "echo -n VALUE > /proc/acpi/ video/VGA/ LCD/brightness" does not work on my Vostro 1000 on Ubuntu 7.10 64bit. It gives "bash: /proc/. ../brightness: Permission denied". If I do "cat /proc/. ../brightness" it gives:
levels: 100 37 12 25 37 50 62 75 87 100
current: 0
Also, the brightness keys are working in the GRUB menu.