LinuxQuestions.org
Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices


Reply
  Search this Thread
Old 05-25-2008, 07:57 PM   #1
S. Shuck
LQ Newbie
 
Registered: May 2008
Distribution: Slackware
Posts: 5

Rep: Reputation: 0
alsaconf vs. /proc data (USB audio)


This is my first post, so I'll start by saying WOW and THANKS for the great job by everyone on this site.

I've been a Mac person for the longest time, until trying Ubuntu on my MacBook and deciding to sell it for a $250 modern desktop with Linux. (Made $500.) Started with Slackware 12.0 running KDE and "moved up" to XFCE when I upgraded to 12.1....At this rate I'll be running strictly command-line *BSD in a year.

alsaconf seems to contradict /proc data. Seems paradoxical, but when I run alsamixer and hit '/' I can plainly see my Logitech V20 USB speakers identified as sound card 1, after on-board Intel as 0, but alsaconf can't find it after 5 seconds of looking. Furthermore, I can use alsamixer -c 1 to adjust the USB audio settings, but I don't get sound half of the time. For example, I can hear sound now and 3 reboots ago but not the last 2 reboots. (No changes had been made.)

The reason I'm posting this under the Slackware subforum is because this is happening after a fresh reformat and install. Seems like a pretty scientific case.

Is it an ALSA bug?

Last edited by S. Shuck; 05-25-2008 at 08:00 PM.
 
Old 05-26-2008, 01:35 PM   #2
S. Shuck
LQ Newbie
 
Registered: May 2008
Distribution: Slackware
Posts: 5

Original Poster
Rep: Reputation: 0
And now I can't hear sound.
 
Old 05-28-2008, 04:04 AM   #3
S. Shuck
LQ Newbie
 
Registered: May 2008
Distribution: Slackware
Posts: 5

Original Poster
Rep: Reputation: 0
Can someone please give me a clue, at least how to continue to research the problem? What are some of the variables which might influence alsaconf's behavior?
 
Old 05-29-2008, 05:01 AM   #4
samac
Senior Member
 
Registered: Mar 2004
Location: Westray, Orkney
Distribution: Linux Mint 17.1
Posts: 1,424

Rep: Reputation: 137Reputation: 137
Hi

WELCOME to Slackware, sorry for the delay :-)

Do you just use your USB speakers? If so you could try to disable the on-board sound card in the bios.

Another option would be to blacklist the sound module for your on-board sound card in
Code:
/etc/modprobe.d/blacklist
You can check whether or not snd-usb-audio module has been loaded using
Code:
/bin/lsmod
, and if it hasn't try
Code:
modprobe snd-usb-audio
, if that works add that command to the bottom of
Code:
/etc/rc.d/rc.modules
There is probably also a way to do this with udev as well, but I don't like udev so I have never bothered to learn anything about it.

Hope that this prompts some further input.

samac
 
Old 06-17-2008, 05:39 PM   #5
S. Shuck
LQ Newbie
 
Registered: May 2008
Distribution: Slackware
Posts: 5

Original Poster
Rep: Reputation: 0
Thanks for the help and sorry for the delay.

I disabled onboard sound in my motherboard's BIOS (BIOSTAR 945G) and it does fix the problem. Makes me wonder if it's a problem with my onboard audio drivers.

It's a temporary fix only, though, because I'd like to be able to plug in headphones, of course using onboard audio, and have that action automatically switch the sound card in ALSA. Might require scripting....Anyway, one thing at a time.
 
  


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
MCP51 AC97 Audio Controller not recognized by alsaconf fedeloco Linux - Hardware 1 05-31-2006 02:00 PM
MDK 10.2: No USB at all (/proc/bus/usb/devices missing) shrodi Mandriva 5 07-01-2005 12:28 PM
Reading audio data files as an actual audio file? Erik_the_Red Linux - Software 1 06-01-2005 08:22 AM
Getting data from /proc azrail1222 Linux - General 10 07-15-2004 04:05 AM
USB scanner not in /proc/bus/usb/devices psweetma Linux - Hardware 4 02-25-2004 05:47 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware

All times are GMT -5. The time now is 03:41 PM.

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
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration