[mythtv-users] PVR 250 problems

Noel Murphy bnmurphy at rogers.com
Sat Dec 11 16:55:41 UTC 2004

ok.... I tried the pvr 250 card in every pci slot. This did rectify the 
problem with 2 devices having the same IRQ, however I still can't get 
rid of the

ivtv: Bus Mastering is not enabled
ivtv: Error -6 on initialization
ivtv: iTVC15/16 mpg2 encoder card: probe of 0000:00:0c.0 failed with 
error -6

errors. Could it be that my motherboard doesn't have "bus mastering"? I 
looked all throughout the bios and the user manual for the mobo and 
can't find any mention of "bus master". It is an older machine I was 
trying to get away with using, but maybe I won't be able to. The 
motherboard is a Gigabyte GA-7ZX and my processor is an AMD 950. I do 
have another machine that is better, but I was hoping to keep that one 
for my desktop machine.

Any thoughts?


On 10-Dec-04, at 1:44 PM, Stephen Tait wrote:

> At 13:09 10/12/2004 -0500, you wrote:
>> So...my observations are that my video card and the pvr 250 seem to 
>> have the same IRQ # and the ivtv Error -6 on initialization message.
>> Does anyone know why I'm getting this? What is "bus mastering" and 
>> how do I "enable it"? I've seen some other post that mention the PnP 
>> settings in the BIOS. I'm not sure what my settings are right now 
>> (I'm at work), but what should they be? Should PnP OS be "yes" or 
>> "no"?
>> Any one have any other ideas?
>> Noel
> Switching the PVR-250 to another PCI slot usually solves this; most 
> mobo manuals will tell you which PCI slots share IRQ's with each other 
> and with onboard devices. Ideally, both your GFX card and the PVR 
> require an IRQ each so that they can be bus masters. Devices like USB 
> controllers and sound cards don't thrash the bus so much and are happy 
> sharing IRQ's with each other.
> Failing that, you can manually assign IRQ's to devices in the BIOS.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

More information about the mythtv-users mailing list