The brightness controls do not have any visible effect on my Toshiba Tecra W50. I tried every combination of acpi_brightness=vendor
and acpi_osi=Linux
to no avail.
How can I change my screen's brightness?
Notes:
- I've installed the proprietary Nvidia drivers for my graphics card.
- The only entry in
sys/class/backlight
isvideo0
- For
video0
,max_brightness
,brightness
, andactual_brightness
are all 100.