On Sunday 18 February 2007 15:19, Larry Bernstone wrote:
> Hans,
> You didn't make clear what you fixed. You made it to run in PIO
> mode? Anyhow, I am sure my DMA errors are caused by cpufreq, but I
> choose a silent PC over an ideally functioning tuner card. I have an
> AMD Turion64 running on an nForce4 motherboard, which I'd expect is a
> rather unusual combination.
Sorry. I mean that if you set the pio field to 1 in the array, then PIO
mode should work again in the latest ivtv trunk version.
Regards,
Hans
>
> > On Sunday 18 February 2007 11:25, Hans Verkuil wrote:
> >
> > I've fixed this in the ivtv trunk. It has seen only minimal
> > testing, though. I'm interested if the CPU load is lower for you
> > with this driver: on my system the CPU load is just a few percent.
> > Surprisingly low, in fact.
> >
> > There are in general two main causes for DMA errors: you have some
> > CPU frequency changer running or you are using soft/hardware RAID.
> > Depending on the chipset you are using (VIA is indicated) you can
> > get these errors. It's really a buggy DMA engine on the conexant
> > chip.
> >
> > Regards,
> >
> > Hans
>
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