LinuxQuestions.org
Help answer threads with 0 replies.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices


Reply
  Search this Thread
Old 03-07-2004, 04:47 AM   #1
Wynand1
Member
 
Registered: Mar 2004
Posts: 121

Rep: Reputation: 15
Question PCM volume control doesn't work / 5.1


I Have a C-media 8378 sound card. When i use aumix to change the volume of the pcm audio nothig happens. Besides that, I have a 5.1 speaker setup but only get sound from the two front speakers.

How can I fix this ?
 
Old 03-07-2004, 03:50 PM   #2
finegan
LQ Guru
 
Registered: Aug 2001
Location: Dublin, Ireland
Distribution: Slackware
Posts: 5,700

Rep: Reputation: 72
The pcm problem I'm not sure of, but the two speaker problem is in the module. The module allows for different compile time parameters on number of speakers, the default is two. Your distro probably compiled the default, at least that is if we're talking about the OSS module cmpci.o, I'm not certain about the alsa module's tricks.

If its cmpci.o you can recompile the kernel (or just the module), and get it set up for greater then 2.

Cheers,

Finegan
 
Old 03-07-2004, 11:18 PM   #3
Wynand1
Member
 
Registered: Mar 2004
Posts: 121

Original Poster
Rep: Reputation: 15
OK..... but I'm a so just how do I do this :
Quote:
If its cmpci.o you can recompile the kernel (or just the module), and get it set up for greater then 2.
 
Old 03-09-2004, 06:23 PM   #4
finegan
LQ Guru
 
Registered: Aug 2001
Location: Dublin, Ireland
Distribution: Slackware
Posts: 5,700

Rep: Reputation: 72
Sorry about the lag in reply... work work work...

Check to see that you are indeed using the oss modules and not alsa...

/sbin/lsmod

and look for cmpci.o, if you're running alsa, then there will be a ton of modules listed with the name alsa in them, should be easy to sort out, if its alsa... well, let's check to make sure under whatever GUI multimedia mixer that it hasn't got the second line out muted. That would be funny, heck check under the mixer even if it is OSS's cmpci.

If its indeed cmpci its not necessary to recompile the whole kernel to just get the changes to the one module. We can just do the modules... see if you have your kernel source installed, it should be about a 150MB directory under /usr/src/ called linux or really... it'll be a symbolic link to a directory called /usr/src/linux-2.4.??

Which ?? Good question. If you haven't got your kernel source on there, no biggie, it'll be in RPM format on the CD, or .tgz... or wait, okay first, what distro?

Also make certain that you've got gcc on there too, the rest of the compiling toys should get installed as dependencies of gcc and the kernel source.

Cheers,

Finegan
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Gnome: make volume hotkeys alter PCM chanel instead of MASTER (ALSA) qwijibow Linux - General 2 10-22-2023 01:32 AM
kmix resets PCM volume to zero ianio Linux - Software 5 03-15-2006 06:06 AM
Kmix PCM volume problem (auto. set to 0 at every new track) Grisha8 Linux - Software 2 12-01-2005 02:48 AM
No Master or PCM volume working J_stuart Ubuntu 2 10-17-2005 03:43 PM
Main and PCM volume set to 0 at boot bluesmanu Linux - General 1 05-31-2005 01:20 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 09:28 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration