OK, here is a better description of my setup. The c-media 8738 on my computer is two pieces. The main part is built into the motherboard so there are 3 jacks directly connected to the motherboard, one jack each for front speaker, Line-IN, and Mic-IN. The second piece is small bracket you mount where an expansion card would be and it connects to the motherboard via a ribbon cable. On this bracket is a jack for the rear speaker line and a jack for the Center/Bass line. There are no SPDIF jacks on my system. From the card to the speakers is a cable with three jacks on each end that connect to the subwoofer and match up corrspondingly for front, rear, and center/bass. Then each individual front, rear, and center speaker connect to the subwoofer. I have been trying to play mp3s through xmms using the standard libmpg123 input plugin and esound output plugin
To get the rear speakers working I went into the kernel source directory, did a make xconfig, and under sound changed the number of speakers for the 8738 from 2 to 6. After doing that I have a choice of enabling the line-in as either the rear channel or the center/sub. I have tried leaving both as no, and tried enabling the line-in as the sub/bass channel. Each time I recompiled, installed, and loaded the new kernel Neither time did I get the center to work. One last note, the 5.1 surround works in Windows XP. But I could not use the C-Media's own drivers from their website,they would not give me correct sound either. I had to use the ones from the motherboard manufacturer which appear to be a modified version of the normal C-Media ones. The normal C-Media ones present you with different jack options once you start the install program such as using the line-in as a center/bass line. None of the options actually matched my jack setup. It wasn't until I uninstalled those drivers and used the ones from IWill, who made the motherboard, that I got 5.1 sound. I hink I had the same problem in XP with the center line as I am having now but I can't remember exactlly. I know this is a bit long, but I hope it explians every possible question you could have. Thanks, Tom PS Is there a non Alsa driver for this card too? And if so, how do I make sure I'm using the Alsa driver and not the other one. I have Alsa installed and it gets compiled during the kernel compile. I also used the init script in init.d and gave it the status option and it returned a msg that it was running. It's just that in my search for help I seem to be finding different drivers here and there, the Alsa one and the linux one from C-Media. On Wed, 2002-03-27 at 05:41, Takashi Iwai wrote: > Hi, > > At 27 Mar 2002 01:57:23 -0500, > Tom McLaughlin wrote: > > > > I just was just playing some more with my computer and I found out that > > my front speakers jack going into the computer was loose. The front > > right channel now works. Definately something I should have checked > > first and feel a little red for. Now the problem is just the center. > > If I disconnect the line from the computer going into the subwoofer > > (there is one cable with three ends that plug into my computer and then > > three ends into the subwoofer, from where the rest of the speakers plug > > in) for the center/sub, the center works but it sounds like a combo of > > the left and right channels. This only works if I disconnect the > > rear/sub line connected to the subwoofer, not vice versa. This has > > narrowed down the problem considerably I think. Now, I think the only > > problem is getting a signal out of my computer for the rear/sub line. > > Is anyone sure how to get that to work correctly with this chipset? > > could you elaborate how did you set up 5.1 channels and what files did > you try? > anyway, i recommend to upgrade to ALSA 0.9.0 rather than 0.5.0, since > i myself won't develop 0.5.0 driver any longer. > > > ciao, > > Takashi > > _______________________________________________ > Alsa-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-user > _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
