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Old 07-07-2011, 08:02 AM   #16
cascade9
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Quote:
Originally Posted by Knightron View Post
Why do you say don't worry about this at the moment? how do i turn the GPU off?
I said that because disabling the nVidia GPU will not help with your resolution issues.

*edit- I'll dig up how to disable the GPU later tonight or tomorrow, its not information that I've kept a link for.

Last edited by cascade9; 07-07-2011 at 08:04 AM.
 
Old 07-07-2011, 12:16 PM   #17
sandwormusmc
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Quote:
Originally Posted by Knightron View Post
Why do you say don't worry about this at the moment? how do i turn the GPU off?
I had a similar issue with a personal and work laptop that were using dual video cards ... I'm running Fedora on both, so if your distro uses GRUB, you can add a couple entries to the end of your OS boot config (in /etc/grub.conf) as follows:

Code:
title Fedora (2.6.38.8-32.fc15.x86_64)
        root (hd0,1)
        kernel /vmlinuz-2.6.38.8-32.fc15.x86_64 ro root=/dev/mapper/vg_sysl001r-LogVol03 rd_LVM_LV=vg_sysl001r/LogVol03 rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet i915.modeset=1
        initrd /initramfs-2.6.38.8-32.fc15.x86_64.img
The i915.modeset=1 makes sure that the OS uses the Intel card for graphics. If that doesn't work 100% you may also need to add a "nvidia.modeset=0" right after the i915.modeset part.

Let me know how it works out, as I've only confirmed this to work on two ATI cards.
 
Old 07-07-2011, 04:37 PM   #18
Knightron
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Talking

Quote:
Originally Posted by sandwormusmc View Post
so if your distro uses GRUB,
lol, god! i use lilo. Thanks though, there might be an equivalent action

Quote:
Originally Posted by cascade9 View Post
I'll dig up how to disable the GPU later tonight or tomorrow, its not information that I've kept a link for.
thankyou Cascade

Last edited by Knightron; 07-07-2011 at 04:38 PM.
 
Old 07-08-2011, 03:20 AM   #19
cascade9
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Quote:
Originally Posted by sandwormusmc View Post
The i915.modeset=1 makes sure that the OS uses the Intel card for graphics. If that doesn't work 100% you may also need to add a "nvidia.modeset=0" right after the i915.modeset part.

Let me know how it works out, as I've only confirmed this to work on two ATI cards.
As far as I know that only works for 'switchable' graphics, not optimus.

Optimus needs a different approach to get disabled-

http://linux-hybrid-graphics.blogspo...tch-onoff.html

BTW, if you are willing to try testing some faily new code, there is bumblebee-

http://linux-hybrid-graphics.blogspo...bumblebee.html

Probably worth a test, but if you are after battery life then its not what you want (at the moment anyway, it will improve over time)
 
Old 07-08-2011, 08:52 AM   #20
sandwormusmc
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Quote:
Originally Posted by cascade9 View Post
As far as I know that only works for 'switchable' graphics, not optimus.

Optimus needs a different approach to get disabled-

http://linux-hybrid-graphics.blogspo...tch-onoff.html

BTW, if you are willing to try testing some faily new code, there is bumblebee-

http://linux-hybrid-graphics.blogspo...bumblebee.html

Probably worth a test, but if you are after battery life then its not what you want (at the moment anyway, it will improve over time)
Oh ok ... I was under the impression that Optimus was the same type of technology. I had heard of bumblebee, but don't have an Optimus card.
 
Old 07-08-2011, 09:02 AM   #21
cascade9
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Quote:
Originally Posted by sandwormusmc View Post
Oh ok ... I was under the impression that Optimus was the same type of technology. I had heard of bumblebee, but don't have an Optimus card.
Optimus is sort of similar to swtichable graphics, but more complex.

Switchable graphics just lets you 'switch' the GPU that is in use, you are either using GPU 'A' or GPU 'B'. Optimus overlays accelerated content over the top of the intel video output, so GPU 'A' and the intel video are both in use at once.
 
  


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