LinuxQuestions.org
Support LQ: Use code LQ3 and save $3 on Domain Registration
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 08-13-2010, 05:49 PM   #1
Marcelo Ruiz
LQ Newbie
 
Registered: Mar 2009
Posts: 6

Rep: Reputation: 2
How to disable onboard intel graphic card on Toshiba M640 (Hybrid Intel/Nvidia)


Hi,

I am having a problem with Ubuntu Lucid on a Toshiba M640 laptop.
When I got it, I paid to get a discrete NVidia graphics cards, but I ended up having a Hybrid Intel i915 (onboard) / Nvidia 310M. This notebook comes with a backlit keyboard.
When installing the current NVidia driver, the notebook cannot boot and I get stuck in a blank screen.
The BIOS does not have an option to select which graphic card should be active.
I would like to avoid Ubuntu to detecting the intel card, just to use the NVidia all the time. Is there any way to do this?
Thanks!
 
Old 08-13-2010, 05:54 PM   #2
Meson
Member
 
Registered: Oct 2007
Distribution: Arch x86_64
Posts: 606

Rep: Reputation: 66
Is this a switchable graphics card? Meaning, do you have one set of video ports shared by the two GPUs? What you need is vga_switcheroo, available since kernel 2.6.34. However, as far as I know, this only works with intel/ati combinations. If it did work with nVidia cards, chances are it would only be with the nouveau driver.
 
Old 08-14-2010, 06:36 AM   #3
Marcelo Ruiz
LQ Newbie
 
Registered: Mar 2009
Posts: 6

Original Poster
Rep: Reputation: 2
Hi,

Thanks for your answer.
I already installed Kernel 2.6.35 with vga_switcheroo, but I am having problems:

erin@erin-laptop:/sys/kernel/debug/vgaswitcheroo$ cat switch
0: :Pwr:0000:01:00.0
1:+:Pwr:0000:00:02.0
erin@erin-laptop:/sys/kernel/debug/vgaswitcheroo$ echo "OFF" > switch
bash: switch: Permission denied
erin@erin-laptop:/sys/kernel/debug/vgaswitcheroo$ sudo echo "OFF" > switch
bash: switch: Permission denied

The bottom problem with this laptop is I want to be able to use the backlight keyboard (which is fully functional under Win 7). That is why I wanted to install the NVidia driver (but I need to be sure Linux doesn't detect the Intel one).
Thanks!
 
Old 08-14-2010, 08:33 AM   #4
Meson
Member
 
Registered: Oct 2007
Distribution: Arch x86_64
Posts: 606

Rep: Reputation: 66
Ok, a few things:

You can't do a redirection with sudo like that. This is how you can do it in one command. Of course you can always just log in as root with "sudo -i" or "su"
Code:
$ sudo echo OFF | sudo tee switch
Like I said, I really don't thing that the switcheroo will even work with the nVidia driver. So you might be stuck with whatever you're laptop gives you by default. However, doing "OFF" on the intel card *might* work and save you some power.

Finally, why is it that you think the backlit keyboard is affected by the gpu switching?
 
Old 08-14-2010, 08:54 AM   #5
Marcelo Ruiz
LQ Newbie
 
Registered: Mar 2009
Posts: 6

Original Poster
Rep: Reputation: 2
Hi,

Thanks again for your help. I could power off the intel card...
Regarding your question about why I think the nVidia driver might be linked to the backlight keyboard: I thought that because when I ordered the laptop I had to upgrade to the nVidia card in order to get the backlight keyboard.
Is there any way to activate the backlight keyboard from the command line? I could not find a useful post regarding this (most are for Macs, and the others for Asus or Sony Vaio laptops).
Thanks again for your help!
 
Old 08-14-2010, 08:59 AM   #6
Meson
Member
 
Registered: Oct 2007
Distribution: Arch x86_64
Posts: 606

Rep: Reputation: 66
That's like when you buy a new car, if you want the backup camera you have to get the navigation system and kitchen sink =).

Does your laptop have a key to turn the backlight on/off that just isn't working? You probably want to start a new thread about the backlight. "Toshiba M640: enable keyboard backlight"
 
Old 08-14-2010, 09:59 AM   #7
Marcelo Ruiz
LQ Newbie
 
Registered: Mar 2009
Posts: 6

Original Poster
Rep: Reputation: 2
Yeah, I already started the new thread.
The weird thing is that I can select the backlight to be on all the time in the BIOS, but as soon as Ubuntu starts loading, the keyboard light is off and can't be turn on again (Fn + Z). That is why I am trying to find out if there is a command line I can try...
 
  


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
can't boot with new pci nvidia video card...onboard intel works OK flsomerv Linux - Hardware 17 11-13-2009 02:16 PM
Intel graphic driver(xf86-video-intel) won't work me_and_linux Linux - Laptop and Netbook 1 10-06-2008 11:26 AM
Installing graphic card drivers on SUSE 10.3 (INTEL 945 GM card) Jason21 Linux - Newbie 1 10-18-2007 07:14 AM
intel 865g onboard graphic DropSig Linux - Hardware 3 02-13-2006 11:04 PM
Disable onboard video on Dell 4700 (Intel 915G) rfboehme Fedora 0 04-28-2005 08:35 AM


All times are GMT -5. The time now is 11:23 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