Hallo
> this is probably a FAQ but I looked through the docs and the list
> archive but didn't find a definite answer.
>
> I'm trying to get my miro DC30 to work with the driver included in
> kernel 2.6.12 (actually it already functions quite well).
> But it seems that I'm hitting a hardware bug with my zoran/mainboard
> chipset (Intel 440BX) combination, at least that's what dmesg tells me
> after loading the module with this command:
Which CPU do you have ?
Do video programms like xawtv work ?
Which input do you want to use ?
What does really work ?
What is the output of lavrec ?
> modprobe zr36067 card=3 v4l_bufsize=512 v4l_nbufs=32
> .
>
> DC30[0]: ZR36057/Natoma bug, max. buffer size is 128K
>
> So my simple question: is the buffer size limited to 128K because of
> /this/ bug or can it be changed somehow? As you can see I already tried
> to use some options while loading the module, without success.
> Somewhere on this list it was mentioned that a buffer size of 512K is
> necessary to capture with full PAL resolution in a good quality -
> obviously it would be nice if that would be possible here ;-).
> At least with the Windows driver this seems to work on my system so I'm
> not sure how serious this hardware bug really is. Maybe someone could
> explain this a bit further?
have you tried recording with a bigger buffer size ?
Hmm, that seems to be a problem with the chipset. I never had a Intel
chipset the last 7 years. That problem was with the DC10. It might not
be a problem with the DC30.
So you might try to change that in the zoran driver, search for Natoma,
you should fined something like that:
if (pci_pci_problems & PCIPCI_NATOMA && zr->revision <= 1) {
zr->jpg_buffers.need_contiguous = 1;
dprintk(1,
KERN_INFO
"%s: ZR36057/Natoma bug, max. MJPEG buffer size is 128K\n",
ZR_DEVNAME(zr));
}
remove at least the zr->jpg_buffers... line than this limit should not
be there. But I don't know what happen when you try to record with a
bigger buffer size.
auf hoffentlich bald,
Berni the Chaos of Woodquarter
Email: [EMAIL PROTECTED]
www: http://www.lysator.liu.se/~gz/bernhard
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