[asterisk-users] issue with ivtv & wctdm zaptel drivers (TDM PCI Master abort)

[Matteo Brancaleoni]

Hi,

On Thu, 2007-01-25 at 08:03 +0100, Stefan van der Eijk wrote:
> Hi,
> 
> I'm experiencing an issue with my x86_64 machine containing a
> Hauppauge PVR-500 (ivtv) and a Digium TDM400p (wctdm, part of zaptel)
> PCI cards. Independently of each other both cards work fine, but once
> the wctdm driver is loaded and mythtv tries to record something on the
> PVR-500 the wctdm driver freaks out. The error message is see is "TDM
> PCI Master abort" printed over and over again in the syslog. 

PVR cards are greedy about irq resources. They need a dedicated irq
and normally the irq is held for much time.
Is not a card that goes with a TDM one, since TDM cards needs
a precise irq timining...

Imho, you should not run both cards on same box.

I had some luck doing that with a DVB-T card... since being
digital cards, the amout of data transferred is lower,
so can work with a TDM.
But was not a hauppauge card.
(I know, also the pvr500 is digital, but you have 2 tuners
so double data rate and normally mpeg2 data rate in hw encoders
is higher that DVB-T data rate)

greetings, Matteo