It depends on your sound card, from what I have been able to gather. The Turtle Beach Santa Cruz apparently cannot mirror the front->rear channels, for some reason. I read somewhere it was because the DSP specifications weren't released by cirrus logic, but I have not found a solution to this yet, and I've been searching since April.
Using the xmms-alsa plugin with XMMS, you can select which channel to use: CS46xx (Front), CS46xx-Rear, CS46xx-Center/LFE, CS46xx-IEC958, but again, you can't specify that you want it to use 4.0 or 5.1-channel surround (even though the surround40 and surround51 configurations are included for the driver). Something I've seen mentioned several times: > $ cat /proc/asound/card0/ac97#0regs > ... > 0:7e = 5914 That register is *supposed* to be some other value, for 4-channel sound to work right, and I don't know what it means, if it is not. http://www.geocrawler.com/archives/3/12349/2002/1/150/7445841/ (A really old post, but I don't know if it is still applicable - you would hope that this has been solved by now, but it's possible that this is still a problem) http://www.alsa-project.org/alsa-doc/doc-php/notes-full.php3#cs46xx http://alsa.opensrc.org/index.php?page=cs46xx On Mon, 2003-11-10 at 05:27, Florian Schmidt wrote: > On Mon, 10 Nov 2003 12:13:56 +0100 > Frank Hart <[EMAIL PROTECTED]> wrote: > > > > like:aplay -D test.wav pcm.rear). Can you give me some advice on how > > > to get the rear speakers working normally? > > > > No, sorry. That's my problem too. The rears work if I use aplay but > > not in normal conditions. I'm starting to think there isn't a solution > > cause I hear a lot of people are having problems with it. > > Hmm, what do you call "normal" conditions? A case whrer you do not tell > the app explicitly, which device to use? i suppose the pcm.rear you talk > about is defined as hw:0,1. Now, to make this device the default device > for all alsa apps you need to override the pcm-device called > "pcm.default". also define a ctl device called ctl.default which point > to the hw:0,1 device. > > I don't know the details, but check the docs, there's some info about > the default device.. > > Also, if you want music to come out of both front and rear out, then my > guess would be that you have to create a new pcm device in your > .asoundrc which then "distributes" the sound to both hw devices.. Don't > kow the details either. Check the docs [there's one called alsa-lib doc > or something but it really leads to a description of the plugins].. > > Florian Schmidt > ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
