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On 08/10/09 08:33, Matej Cepl wrote:
Jonathan Pritchard, Thu, 08 Oct 2009 01:00:19 +0100:
> Well I've got a T400 with hybrid graphics (Intel X4500 & ATI Radeon
> 3470) and they are both supported out of the box on Fedora 11. I think
> even Compiz is working on both.
>
> The only issue is that there is no switching at run time. I choose to
> select the integrated in the BIOS because it runs a lot cooler and the
> Intel integrated is a bit better supported at the moment (in my limited
> experience).
Actually, I have the same Leonovo Thinkpad T400 and I wasn't able to
switch to ATI graphics at all (didn't mean to use it seriously, just to
try how it works). Have you ever managed to switch to ATI graphics with
your T400 (using BIOS presumably)?
Matěj
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Yes. Switching to discrete graphics in the BIOS works fine. Make sure
you have the ati and radeonhd drivers installed - works fine.
It even works if I leave on 'OS detection' and 'switchable graphics' (I
forget to change the option sometimes). Although it does get mighty hot,
I don't believe the GPU thermal management driver is very good, as both
GPUs are running.
Jon Pritchard
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