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SubjectRe: Via KT400 agpgart issues
For my geforce3 and geforce4 I didn't notice anything odd about using the
KT400 chipset in spite of agpgart not fully supporting it.

For my fx5800 I actually *had* to use the nvidia agp driver to get
anything other than console mode to function. Now it could be that I just
needed to drop the AGP rate to 4x in bios but frankly I didn't think of
that option until I'd already switched to using the nvidia code. The
nvidia agp code has been behaving quite well under 2.4.20 and 2.4.22-pre*
for me.

--

<Douglas Leonard>
<dleonard@dleonard.net>

On Thu, 14 Aug 2003, Mark Watts wrote:

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> Hash: SHA1
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>
> Ok, I _am_ using the nVidia modules (on 2.4.21) but the fact that the agpgart
> driver can't sense my agp apature size is concerning... (its set to 256MB in
> the bios)
>
> 0: nvidia: loading NVIDIA Linux x86 nvidia.o Kernel Module 1.0-4496 Wed Jul
> 16 19:03:09 PDT 2003
> Linux agpgart interface v0.99 (c) Jeff Hartmann
> agpgart: Maximum main memory to use for agp memory: 439M
> agpgart: Detected Via Apollo Pro KT400 chipset
> agpgart: unable to determine aperture size.
> 0: NVRM: AGPGART: unable to retrieve symbol table
>
> I'm running a GeForce FX 5600 128Mb with AGP 3.0 support enabled.
> It seems to run ok, but its slower than the Ti 4200-4x I took out by a larger
> margin than it really should be (according to the benchmarks I've seen
> scattered through the internet.)
> I'm also running with the Local APIC turned on (it doesnt seem to break
> anything).
>
> Is anything actually broken or is this nothing to worry about?
>
> Cheers,
>
> Mark.
>
> - --
> Mark Watts
> Senior Systems Engineer
> QinetiQ TIM
> St Andrews Road, Malvern
> GPG Public Key ID: 455420ED
>
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> =a21r
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>
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