Re: [PATCH 001/001] PCI: PCI quirk for Asus A8V and A8V Deluxe motherboards

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Andras Mantia <[email protected]> writes:

> Jan-Benedict Glaw wrote:
>
>> Just for the records, it happens actually quite often that some little
>> features / improvements of a chipset have bugs; from time to time,
>> you'll see a BIOS update that doesn't really do more than switching
>> off that feature. I guess that quite some of our quirks originate from
>> looking at what a newer BIOS configures differently compared to an
>> older version.  Some instability can be fixed that way (though it's
>> better to have a fix for such a bug inside the BIOS: this way, the fix
>> is in place at the time the Linux kernel is loaded, so there's no way
>> for it to eg. cause memory corruption between loading the kernel and
>> issueing the quirks.)
> I know, but in this case I got this answer: 
> " Dear Friend :
>   Thank you for contacting ASUS Customer Service.
>   My name is ZYC, and I would be assisting you today. 
>  sorry ,due to chipset limitation ,
> when you add a PCI AUDIO card to a board which use VIA VT8237 southbridge
> controller ,
> the built in AC97 audio will be disabled automaticly .
> it is a chip limitation without way to fix ."

What a liar.

> Meantime I tried the patch against the 2.6.13-15 kernel shipped with SuSE 10
> (applied without errors), and altough I see 
> PCI: enabled onboard AC97/MC97 devices
>
> in the logs, the onboard  card doesn't appear in lspci.
>
> I'm downloading the 2.6.16-rc6 kernel to try with that one. Mine is an
> A8V-Deluxe, so I don't know why it didn't work. :-( I have the latest Asus
> bios and verified that it is enabled in the BIOS (I know, it doesn't really
> matter, but I mention here).

The patch works on my Asus P4V8X-X board.  There is one problem
though.  With a CMI8738 based PCI sound card in PCI slot 3 the machine
locks up solid when I try to use it.  No problems at all with the card
in slot 2.

-- 
Måns Rullgård
[email protected]

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