Quote:
Originally Posted by rshepard
We have a Sony Vaio model PCG-61A14 and the screen brightness plugin does not work; the slider doesn't. It sits there. A few related threads here do not appear to be applicable; different distributions and hardware.
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I also have sony vaio, but I loaded the kernel module "sony_laptop" to control function keys and other details. You should try load (as root):
Code:
modprobe sony_laptop
And again try to add the plugin. Don't forget "Brightness is controlled by vendor-specified hotkey or by the OS(ACPI or graphic driver)"
Quote:
Originally Posted by rshepard
A couple of folks running Arch Linux suggested changing a sys file for screen brighness but I did not find apci_video when I looked for it.
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It's another option. XFCE4 in Slackware 14.0 still doesn't keep the brightness level when the laptop is power off, so I create a rule in rc.local file to adjust the brightness when power on. Try running this in the console (as root):
get max brightness of acpi_video0 (first video card):
Code:
# cat /sys/class/backlight/acpi_video0/max_brightness
15
set value of brightness to 1st video card (acpi_video0):
Code:
# echo n > /sys/class/backlight/acpi_video0/brightness
Where "n" is a value between 0 to 15 (max brightness), n=7 is a good start. If you have a 2nd video card again repeat and changing "acpi_video0" to "acpi_video1". When you have the optimal value write it in the rc.local file (in my case):
Code:
# Set Brightness:
echo 7 > /sys/class/backlight/acpi_video0/brightness
echo 7 > /sys/class/backlight/acpi_video1/brightness
And enjoy!
