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Re: Deactivate Switchable Graphics on ATI

 

Hi,

It's great that you have been able to find a solution. Can you give a few more
details of the different steps from beginning to end?

I'll put the details on the Launchpad webpage if you want.

Thanks!

Albert.

>> Is this described somewhere, or could you tell us more about how to do
>> this? How to switch to ATI without going back to BIOS? Do you switch the
>> framebuffer console on the fly as well?

> - enabling ATI chipset,
> - enabling INTEL chipset,
> - connecting Panel and VGA to ATI,
> - connecting panel and VGA to Intel.
> After Enabling ATI and connecting the outputs to it, of course at there's no
> output as the ATI is not initialized. I first had to reset the pci bus, the
> card is the initialized, but then for some reason the kernel can't get the
> cards ROM space. I always get "invalid checksum".
> So i read the ROM in discrete mode to a file and patched radeonhd to not ask
> the kernel for the ROM, but instead read from my file. Xorg with radeonhd
> really starts up then, even the ATI was completely deactivated before.
> I _know_, this is no real solution, but with this patch i just wanted to proof
> it is working in Linux :).
> Maybe it's time to put a web page online with this stuff. sf.net, maybe...



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