On Wednesday 07 June 2006 15:40, Chris Schanzle wrote:
> On 06/06/2006 12:41 PM, Hans Verkuil wrote:
> >On Tuesday 06 June 2006 11:47, Steven Ellis wrote:
> >>Got DMA errors and MPEG artifact/corruption appearing on my
> >> Hauppauge PVR 150 unit with the ivtv 0.4.4 driver. Looks like
> >> similar problems to trac issue 049.
> >>
> >>
> >>Secondly - Any tips on how to best trouble shoot the issue when it
> >>happens. For example can I tune the PCI bus to prevent this from
> >>happening.
> >>
> >>Unloading/reloading driver and or firmware doesn't fix it. I have
> >> to power off for a couple of minutes to sort it out.
> >
> >There isn't really anything that can be done. Turn off any frequency
> >scaling (that solves it for some people). Every time I think I
> > finally have the time to investigate further something else crops
> > up. It's only a few people that have this problem but the core
> > cause is probably wrong handling of DMA errors.
> >
> > Hans
>
> Hans, as one who can easily repeat this problem and we started
> working on it in the past, let me know when you might have some time
> to look into this again. (Disabling frequency scaling didn't fix it
> for me when the box was heavily loaded.)
Yes, I'm feeling really guilty by now :-)
It's the work to get ivtv into the kernel that takes so much time. So
much that otherwise important but time-consuming bugs like this do not
get the attention they deserve. There is no real solution for this I'm
afraid. Unless someone else steps in and is willing to take the time to
investigate.
Hans
_______________________________________________
ivtv-devel mailing list
[email protected]
http://ivtvdriver.org/mailman/listinfo/ivtv-devel
