Last visit was: It is currently 24/11/2014, 23:15


All times are UTC [ DST ]




Post new topic Reply to topic  [ 13 posts ] 
Author Message
 Post subject: Backlight on Samsung RV520
PostPosted: 03/06/2012, 13:41 
Newbie
Newbie

Joined: 03/06/2012, 13:38
Posts: 4
Hi all,

i have a Samsung rv520 with an Geforce GT 520m.
My OS is Kubuntu 12.04 Which packets i must install to controll the brigthness value?

thanks


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 14/06/2012, 13:34 
Newbie
Newbie

Joined: 24/04/2011, 18:55
Posts: 10
It feels like none. I have the same notebook and brightness control is broken after upgrade to 12.04. It worked perfectly in 11.10 though. Now I can only decrease the brighness.


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 14/06/2012, 17:59 
Newbie
Newbie

Joined: 26/04/2012, 5:16
Posts: 11
You need nvidia_bl module.

Google it nvidia-bl-dkms git repo and in the downloads section, download and install nvidia_bl0.74 for ubuntu 12.04.

Problem is, samsung-tools hotkeys doesn't work! You have to echo the /sys/class/backlight/nvidia_backlight/brightness file (with a range from 0 to 127).

I hope Voria will bind the echo with the hotkeys for this laptop!


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 15/06/2012, 11:40 
Newbie
Newbie

Joined: 24/04/2011, 18:55
Posts: 10
Thanks!
Is 0.74 version compatible with Precise? In Voria's post he said that this driver was incompatible with the kernels in 12.04.


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 15/06/2012, 11:43 
Newbie
Newbie

Joined: 26/04/2012, 5:16
Posts: 11
Well, it's compatible with archlinux with kernel 3.4.2.. I guess it's fine. In voria's repo there is a 0.73 version and it's not compatible. 0.74 fix kernel 3.2.x compilation (ubuntu kernel)


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 15/06/2012, 12:06 
Newbie
Newbie

Joined: 24/04/2011, 18:55
Posts: 10
Just installed it. It works. But the driver does not start automatically.
And I cannot control the brightness with FN+up/down buttons.


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 15/06/2012, 13:47 
Newbie
Newbie

Joined: 26/04/2012, 5:16
Posts: 11
Told ya :D hotkeys doesn't work.

Try loading nvidia_bl module at boot (MODULES in rc.conf)


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 21/07/2012, 14:53 
Newbie
Newbie

Joined: 03/06/2012, 13:38
Posts: 4
Hi,

iam already there :)

I have now a clean installation of 12.04. But what should i exactly do to get the brightness work on my samsung rv520 ?

Thanks for reply


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 22/07/2012, 17:05 
Newbie
Newbie

Joined: 26/04/2012, 5:16
Posts: 11
https://github.com/guillaumezin/nvidiabl/downloads

Install the latest .deb

I don't know if the new version let the fn keys work...(I had a problem with the monitor standby with 0.73 version and uninstalled).

To change the brightness manually just do:

echo XX > /sys/class/backlight/nvidia_backlight/brightness

XX -> from 0(min) to 128(max)


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 23/07/2012, 13:52 
Newbie
Newbie

Joined: 03/06/2012, 13:38
Posts: 4
Hi,

i have installed the deb packet. But when i try to change the brightness over the terminal, i get an error message
becaue the folder / file nvidia Backlight didnt exsist.

Have yout a idea?


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 24/07/2012, 12:01 
Newbie
Newbie

Joined: 03/06/2012, 13:38
Posts: 4
re,
i came a step forward! now i can change the brightness with you console command. But the maximum brightness i can adjust is nit very maximum ;) can i change the maximum an minimum values?
Because when i want to set it for example on 100 The display is in my opinion on 15 oder 20 %.


regards


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 01/08/2012, 12:26 
Newbie
Newbie

Joined: 24/04/2011, 18:55
Posts: 10
You neet to load the module nvidiabl with an option max_brightness = 10000


Top
 Profile  
 
 Post subject: Re: Backlight on Samsung RV520
PostPosted: 20/09/2012, 3:40 
Newbie
Newbie

Joined: 20/09/2012, 3:34
Posts: 1
thanks for your help!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Theme created StylerBB.net & kodeki