[mythtv-users] Trouble setting up two sound cards in same box

[Chuck Connors]

Thanks for the reply, but still no go.  The pci sound card is now the only 
thing reportedly using IRQ 12 when doing an 'lspci -v'  ..  Any other ideas?


>From: maarten <mythtv at ultratux.org>
>Reply-To: Discussion about mythtv <mythtv-users at mythtv.org>
>To: Discussion about mythtv <mythtv-users at mythtv.org>
>Subject: Re: [mythtv-users] Trouble setting up two sound cards in same box
>Date: Wed, 17 Mar 2004 19:07:29 +0100
>
>On Wednesday 17 March 2004 18:01, Chuck Connors wrote:
> > *Flame retardent disclamier*
> > I realize that this is not the alsa mailing list, nor is it the 
>knoppmyth
> > forums.  I have posted my problem to both the alsa mailing list and the
> > knoppmyth forums and receive a bit of help, but my sound problems 
>presist.
> > I am petitioning this list for help as I am under the assumption that
> > others may be running two bttv cards with multiple sound cards in the 
>same
> > box *End disclaimer*
> >
> > Here's the situation.  I am currently running KnoppMyth (a Knoppix based
> > distro of Mythtv).  I have the system running fine with one bttv card 
>(an
> > ATI TV Wonder VE) and the onboard sound (Sis chipset).  I decided I 
>wanted
> > another tv tuner so I bought another bttv card (AITech Wave).  Because 
>both
> > of my bttv cards do not have btaudio, I am forced to have a sound card
> > dedicated for each card.  I decided to add a Cmedia pci card, and have 
>been
> > having troubles ever since.  Thus this message.  At the moment, the 
>onboard
> > sound works fine, but I'm not getting anything from the pci card I 
>added.
> >
> > Here is what I get when I do an 'lspci -v' in regards to the sound 
>cards:
> >
> > 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] 
>Sound
> > Controller (rev a0)
> >         Subsystem: C-Media Electronics Inc: Unknown device 0300
> >         Flags: bus master, medium devsel, latency 64, IRQ 10
> >         I/O ports at dc00 [size=256]
> >         I/O ports at d800 [size=64]
> >         Capabilities: [48] Power Management version 2
> >
> > 00:0f.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev
> > 10) Subsystem: C-Media Electronics Inc CMI8738/C3DX PCI Audio Device 
>Flags:
> > bus master, medium devsel, latency 64, IRQ 12
> >         I/O ports at b800 [size=256]
> >         Capabilities: [c0] Power Management version 2
>
>IRQ 12 is _always_ used for the PS/2 mouseport IIRC. Plus you mention below
>that it is also used by USB. Thus, I'd say play around with the BIOS IRQ
>settings to see if you can get it on a different IRQ.  Please disable any
>onboard stuff you do not use (if you didn't already...). This specifically
>includes (when applicable) floppy controller, parallel port, serial ports,
>midi port, etc. etc.
>If this doesn't fix it and you are unable to get the card on it's own IRQ,
>change the order of the cards in the PCI slots as they are hardwired to IRQ
>lines; all AGP + PCI slots share (at most) 4 IRQ lines so finding out which
>slot(s) uses which lines may be helpful to you.
>Please note that linux support IRQ sharing just fine, BUT only if the
>driver(s) in question play nice. So when in doubt, try and make sure the
>troublesome card(s) use a single IRQ.
>
> > I just noticed that my USB controller and the C-media pci card are both
> > using
> > IRQ 12 .  Can this be the cause of the problem, or do they both 'share' 
>IRQ
> > 12?
>
>Um, they do indeed share an IRQ but that's not the point. Do they play NICE
>while sharing the IRQ ? is the REAL question.  If one of those has the 
>notion
>of "sharing" that Eric Cartman has, then the other card is starved for
>resources and will not work.  ;-)
>
>Dunno if all this helps any, but just a few random thoughts...
>Good luck.
>
>Maarten
>
>--
>Yes of course I'm sure it's the red cable. I guarante[^%!/+)F#0c|'NO 
>CARRIER
>_______________________________________________
>mythtv-users mailing list
>mythtv-users at mythtv.org
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

_________________________________________________________________
Get reliable access on MSN 9 Dial-up. 3 months for the price of 1! 
(Limited-time offer) http://click.atdmt.com/AVE/go/onm00200361ave/direct/01/