LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Laptop and Netbook
User Name
Password
Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

Notices

Reply
 
Search this Thread
Old 08-08-2005, 11:24 AM   #1
Habu
Member
 
Registered: Apr 2005
Location: Malaysia
Distribution: Fedora, Suse
Posts: 108

Rep: Reputation: 15
Angry Sony vaio vgn-b55g lcd brightness can't be set


Hello all,

I have a sony laptop, a vgn-b55g(centrino 1.5,768mb ram, 40gb hdd, etc). The model number might sound strange, cos sony sells this one in (AFAIK) asia only. Anyway, here's the problem: i can't get or set the lcd brightness. I've got the sonypi module working (seemingly) and i can poll the device for function key presses as well as get battery details. However the lcd brightness shows up as 0(using spicctrl) regardless of what i set it to, and of course trying to set it doesn't do anything. I've tried the acpi patch also,to no avail. There is one thing though, powertweak has an entry called 'sony lcd brightness' which seems to get the correct value. Editing that value doesn't do anything though I don't know what else to try, if there's anything at all...i was just hoping that maybe someone might have had the same problem and maybe solved it..or ideas...i do realise that i'm probably pursuing a lost cause, and i will probably have to set the brightness from windows forever(it remembers the settings, even after shutdown, etc). But it's just bloody irritating that the windows driver smugly changes the brightness with ease-and it shows me a bar indicating brightness-what cheek! i'm never buying a sony again
 
Old 02-19-2006, 05:45 PM   #2
Habu
Member
 
Registered: Apr 2005
Location: Malaysia
Distribution: Fedora, Suse
Posts: 108

Original Poster
Rep: Reputation: 15
Update: I've found out how to do it

There's a file, /proc/acpi/sony/brightness
All you have to do is
Code:
echo n > /proc/acpi/sony/brightness
where n is a value between 1 and 8 (it doesn't have any effect for other values)

Now, to cook up a script to use a keyboard shortcut to do it...
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sony Vaio VGN-S260 'howto' Shade Linux - Laptop and Netbook 0 04-19-2005 03:16 AM
Sony Vaio VGN-FS115M Gigantas Linux - Laptop and Netbook 11 03-19-2005 08:28 AM
Sony Vaio VGN-B1XP / sony driver question kentri9 Linux - Laptop and Netbook 0 12-27-2004 11:00 AM
Sony vaio vgn-a217, Fedora core 2, listen cd facs Linux - Laptop and Netbook 2 11-15-2004 05:04 AM
VGN-260 Sony Vaio Fedora-Core-2 no sound ? rocken7 Linux - Laptop and Netbook 3 11-13-2004 09:26 PM


All times are GMT -5. The time now is 02:44 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration