Arch Linux

rg_arc

Member

Registered: 2011-03-20

Posts: 507

Acer Aspire brightness control

I haven't yet been able to figure out a permanent fix to have full control of the brightness by using the Fn key+right/left. There is a terminal workaround that can change the brightness for the time being but I would like to be able to use the keyboard.

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
$ 

Here is the workaround:

$ sudo setpci -s 00:02.0 F4.B=70

Is there a simple way of putting this workaround with some shortcuts?

milomouse

Member

Registered: 2009-03-24

Posts: 940

Website

Re: Acer Aspire brightness control

Wiki: Extra Keyboard Keys - https://wiki.archlinux.org/index.php/Ex … board_Keys
Wiki: Extra Keyboard Keys in Console - https://wiki.archlinux.org/index.php/Ex … in_Console
Wiki: Extra Keyboard Keys in Xorg - https://wiki.archlinux.org/index.php/Ex … ys_in_Xorg

Script: moodlight - http://pastebin.com/MxBGmYPf
(written in 'zsh', so it's a dependency unless you want to take the time to convert it to 'bash' which actually shouldn't take too long)

I wrote a script a long time ago when my Lenovo couldn't adjust display without the 'setpci' command and bound it in both console and xorg.
The script is just an quick and easy way to keep track of current setpci command and adjust accordingly for up/down, reset, etc.

In console I followed the wiki (about console keys above) and set XF86MonBrightness{Up,Down} to 'moodlight --increase' and 'moodlight --decrease', etc.
In xorg I followed the wiki and decided to let 'xbindkeys' do it and start from xinitrc file, but now-a-days I set all keybindings in my window manager(s).

Some ideas, anyway.  Hope they help, at least a little.

smartass

Member

From: Prague, Czech Republic

Registered: 2011-02-25

Posts: 60

Re: Acer Aspire brightness control

If the solutions suggested by milomouse don't work, try playing around with the kernel parameters in Grub.
For my Acer Extensa I had to add acpi_osi=Linux
Check out the Backlight wikipage.

---

KISS my Arch, Willy Gates!

rg_arc

Member

Registered: 2011-03-20

Posts: 507

Re: Acer Aspire brightness control

I can't really decipher any of this to be honest. I tried to add acpi_osi=Linux to kernel parameters and that didn't work.

rg_edit: I am using gnome3 by the way

Last edited by rg_arc (2011-06-27 08:21:38)