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Bug 84508 - (SOUND EMU10K1)Soundblaster Live DSP device and microphone not created correctly
(SOUND EMU10K1)Soundblaster Live DSP device and microphone not created correctly
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2003-02-18 00:22 EST by ken conrad
Modified: 2007-04-18 12:51 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-06-11 07:46:44 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description ken conrad 2003-02-18 00:22:38 EST
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):

How reproducible:
I reloaded twice while testing and verifying and it is repeatable.

Steps to Reproduce:
1. Just load the OS.
Actual results:

Expected results:

Additional info:
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
Comment 1 Bill Nottingham 2003-02-18 11:47:07 EST
Um, no. The devices in /dev are correct. Any misfunction of those devices is a
driver bug.
Comment 2 Alan Cox 2003-06-10 13:48:05 EDT
Does this machine also have a web cam with microphone input - such as the
philiips based ones ?
Comment 3 ken conrad 2003-06-10 18:24:19 EDT
Yes I have a USB Logitech Quickcam Pro 4000.
Comment 4 Alan Cox 2003-06-10 19:07:08 EDT
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

Comment 5 ken conrad 2003-06-10 20:11:28 EDT
Thank you for the insight. It makes sense now.
Comment 6 Alan Cox 2003-06-11 07:46:44 EDT
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.

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