[mythtv-users] Turning on Bus Mastering for PVR-250

[Donoghue, Jay]

> -----Original Message-----
> From: Aleaxander [mailto:alex at carbonated.com]
> Sent: Tuesday, December 02, 2003 2:42 AM
> To: mythtv-users at mythtv.org
> Subject: [mythtv-users] Turning on Bus Mastering for PVR-250
> 
> Hi Everyone,
> 
> I'm following Jarod's guide in setting up a second MythTV system
(first
> one works great, thanks Jarod and Axel!), but I'm stuck on setting up
> ivtv.  In searching the mail archive, I think I have figured out the
> possible problem, but have been unable to fix it.  It looks like my
> PVR-250 is not being assigned an IRQ number.  I get the following
> information on the card from my system:
> 
> 00:07.0 Multimedia video controller: Internext Compression Inc:
Unknown
> device 0016 (rev 01)
> Subsystem: Hauppauge computer works Inc.: Unknown device 4009
> Flags: medium devsel
> Memory at 20000000 (32 bit, prefetchable)[disabled][size=64M]
> Capabilities: <available only to root>
> 
> That part about [disabled] seems wrong : ).  Based on what I've read
in
> prior posts on the list, I imagine that my motherboard, MSI K7T266
> Pro-RU, is not doing Bus Mastering, even though reviews of the board
say
> that all the PCI slots on it have Bus Mastering...  I've tried moving
> the PVR-250 to every PCI slot on the motherboard in the hopes that it
> will start working, but none of them seem to assign an IRQ to the
card.
>   Looking through the BIOS, I don't see anything relating to Bus
> Mastering.  I've e-mailed MSI support to see if there is an option in
> the BIOS that I'm missing to turn on Bus Mastering, but I haven't
heard
> back from them yet and I'm hoping that someone on the user-list will
> have some idea what is wrong or how to turn on Bus Mastering (if this
is
> actually the problem).
> 
> Thanks,
> 
> -Alex


I had this problem with one of my motherboards.  Try either moving the
card to a different PCI slot, since they may not all support bus
mastering.  Or, you can try and force bus mastering using the script
found at http://www.xfree86.org/4.1.0/DRI9.html

 - J