Red Hat Bugzilla – Bug 84508
(SOUND EMU10K1)Soundblaster Live DSP device and microphone not created correctly
Last modified: 2007-04-18 12:51:20 EDT
Description of problem:
On a freshly loaded RH8 system with a soundblaster live card, the install
creates a dsp device with major,minor of 14,3 which won't take input but will
produce output so I think it is actually the microphone. I did get output after
renaming dsp to dsp0 then linking dsp1 to dsp. Also there should be a second dsp
with output because the Soundblaster Live has 4 speakers.
Version-Release number of selected component (if applicable):
I reloaded twice while testing and verifying and it is repeatable.
Steps to Reproduce:
1. Just load the OS.
This is what it looks like after my changes:
lrwxrwxrwx 1 root root 4 Feb 17 00:53 dsp -> dsp1
crw------- 1 conrake root 14, 3 Aug 30 19:31 dsp0
crw------- 1 conrake root 14, 19 Aug 30 19:31 dsp1
crw------- 1 conrake root 55, 0 Aug 30 19:31 dsp56k
Um, no. The devices in /dev are correct. Any misfunction of those devices is a
Does this machine also have a web cam with microphone input - such as the
philiips based ones ?
Yes I have a USB Logitech Quickcam Pro 4000.
Ok what is happening here is that on boot Red Hat finds the USB camera with
microphone before the soundblaster live. This makes dsp0 your webcam and dsp1
(which can be opened a ton of times) the emu10k1 hardware
This is a known "oops that wasnt very clever of us" problem with the current Red
Thank you for the insight. It makes sense now.
The USB devices appearing too early bug has an RFE to fix already so I'll close
this bug now
Thanks for reporting it, sorry you hit it.