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Old 07-28-2011, 08:33 PM   #16
Alpo
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Registered: Jul 2011
Location: US and A.
Distribution: RHEL 6.1 & Ubuntu 10.04
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And another: http://en.gentoo-wiki.com/wiki/Vga_switcheroo
 
Old 07-29-2011, 08:30 AM   #17
Alpo
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Here is AMD's official response:

Quote:
Response and Service Request History:

There is no technical documentation from AMD on how switchable graphics work, this would come from the laptop manufacturer.

Basically the integrated video card is used for most applications or when on battery power, the add in card is only used when the application requires the greater capabilities of the video card and the systems power settings allow for the switch.

The drivers for these switchable graphics solutions are proprietary, AMD drivers are not compatible with the laptops running this configuration. If the laptop manufactuer does not offer Linux support and drivers they there would be no way to run Linux on the unit because there are no drivers.



In order to update this service request, please respond, leaving the service request reference intact.

Best regards,

AMD Global Customer Care
 
Old 07-29-2011, 11:41 AM   #18
sandwormusmc
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Registered: Nov 2006
Distribution: Fedora 15 x86_64
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Quote:
Originally Posted by Alpo View Post
Sandworm

Ubuntu will let me edit the boot commands by hitting 'e' before GRUB selects a boot path. I've seen a similar solution where a dude put "VGA=radeon" into the commands and it worked for him. Didn't work so hot for me.

It sounds like you forced GRUB to use particular driver. How would I figure out a similar solution for Ubuntu?

HOORAH!

Cascade

Yeah, this 'switchable graphics' thing threw me for a loop. I saw two video cards and my entire world crumbled. Until I read this: http://www.amd.com/us/products/techn...-graphics.aspx

The next logical question is: How I can I configure Ubuntu to run either graphics card at my choosing?

Thanks for all the help.
Found a more relevant link on the Ubuntu site for you: https://wiki.ubuntu.com/X/KernelModeSetting

Semper Fi, and good luck.

Last edited by sandwormusmc; 07-29-2011 at 11:47 AM.
 
1 members found this post helpful.
Old 07-30-2011, 09:16 PM   #19
Alpo
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All:

Problem solved!

Here was my solution:

#vi /etc/default/grub

Edit the GRUB_CMDLINE_LINUX_DEFAULT variable to read:
GRUB_CMDLINE_LINUX_DEFAULT="text splash nomodeset i915.modeset=1 radeon.modeset=0"

#update-grub
#reboot

Thanks for all the help!
 
  


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