Why ? What should show this ? acpi_backlight=Linux
why not xbacklight -set value
, example xbacklight -set 50
How this work?
This command edit file in /sys/class/backlight/...
?These files exist only on laptops?
actual_brightness brightness max_brightness subsystem/ uevent
bl_power device/ power/ type
What if He don't have this files?
He need only xbacklight installed?
He don't need add xbacklight -set value in /etc/rc.local ?
I don't see backlight in synaptic , maybe can xbacklight ? This is in synaptic.
This is this same?
What doing acpi_osi=Linux
Tells the Advanced Configuration and Power Interface (ACPI) that the Operating System Interface (OSI) is Linux.
Tells the system to use the vendor-specific driver for the backlight instead of the system's default driver.