Can't adjust brightness on Toshiba A100
Nothing I found works. I need to reduce brightness of Toshiba Satellite A100, the screen is too bright. Gnome on Arch, "xf86-video-intel".
Fn buttons don't work. "echo NNN > /proc/acpi/video/.../brightness" doesn't make any change. Gnome power manager doesn't affect anything... Brightness applet does nothing. xbacklight is not even in Arch repos... Please help. |
What does cat /proc/acpi/video/GFX0/LCD/brightness do?
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Hi!
It looks like we have the same laptop! ;) I must say that lately I've been testing some distros on my Toshiba and on each one Fn keys did work. Even the multimedia keys too. So this is some "Arch thing", but I'm not using Arch and I'm using Xfce at the moment. Our laptop is supported. This used to be a problem with Toshiba laptops which did not have Phoenix BIOS, thus another project was created fnfx. Try to change something in GConf key /apps/gnome-power-manager/ Quick Google search pointed to this; Quote:
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Quote:
Code:
# cat /proc/acpi/video/GFX0/LCD/brightness Code:
Cannot open display: default display |
alan_ri, did what you wrote. Gconf (brightness = 50).
acpid also. Nothing. Brightness is still too high, can't work like this. |
Well, all that sounds weird to me.
The display error, try to set $DISPLAY variable with: Code:
export DISPLAY=:0.0 Few ideas I have right now; You could login without X and then start it with: Code:
startx Check what modules Arch uses in the kernel for Toshiba laptops. What do you get when you run: Code:
whereis fnfxd |
> export DISPLAY=:0.0
And it shows "Can't open display :0.0"... > You could login without X and then start it with: startx Will try. > Check what modules Arch uses in the kernel for Toshiba laptops. Code:
# modprobe toshiba_acpi Code:
# whereis fnfxd 2.6.36.1-3. |
startx doesn't load X:
Code:
[ 24.402] (II) LoadModule: "fbdev" |
Don't know why, but it looks like Arch is missing some modules. Install x11-drivers/xf86-video-fbdev. Try startx again.
Then try: Code:
echo "brightness:50" > /proc/acpi/video/GFX0/LCD/brightness |
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