Bug 208389 - No sound from a SB Audigy4
No sound from a SB Audigy4
Status: CLOSED DUPLICATE of bug 204392
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
4.4
All Linux
medium Severity medium
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Assigned To: John W. Linville
Brian Brock
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Depends On:
Blocks:
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Reported: 2006-09-28 06:53 EDT by James Pearson
Modified: 2007-11-16 20:14 EST (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2006-09-28 10:35:30 EDT
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Description James Pearson 2006-09-28 06:53:12 EDT
Description of problem:

No sound is heard when using 'Play test sound' from system-config-soundcard when
using a SB Audigy4 PCI card.

Version-Release number of selected component (if applicable):

Kernel 2.6.9-42.0.2

lspci identifies the card as:

03:07.0 Multimedia audio controller: Creative Labs SB0400 Audigy2 Value

lspci -n:

03:07.0 Class 0401: 1102:0008

lspci -v
03:07.0 Multimedia audio controller: Creative Labs SB0400 Audigy2 Value
        Subsystem: Creative Labs: Unknown device 1021
        Flags: bus master, medium devsel, latency 32, IRQ 217
        I/O ports at 9c00 [size=64]
        Capabilities: [dc] Power Management version 2


How reproducible:

run system-config-soundcard and select 'Play test sound'
  
Actual results:

No sound

Expected results:

Sound!

Additional info:

SB Audigy4 support was added to RHEL4.4 (in the kernel src patch:
linux-2.6.9-sound-updates.patch)

But in the code in that patch, it assumes that the audigy4 cards have a 'serial'
number of 0x10221102

However, for the audigy4 card I have, the serial number is actually 0x10211102
(the 'Unknown device 1021' in the lspci -v output)

Also, looking at the 2.6.18 kernel sources for the emu10k1 driver there is no
mention of a 'subsystem' with a value of 0x10221102, but there is for 0x10211102.

Changing 0x10221102 to 0x10211102 in the 2.6.9-42.0.2 emu10k1 kernel source and
rebuilding the kernel, and I can now get sound from this card ...
Comment 1 Peter Martuccelli 2006-09-28 09:55:18 EDT
John please check the first line of your R4.4 patch,
0945.linville.audigy4-support.patch, it apeears the serial number change is in
question.
Comment 2 John W. Linville 2006-09-28 10:33:20 EDT
Actually, there appear to be cards with both serial numbers.  A patch to 
accomodate this serial number is already slated for U5.  Test kernels with 
that patch are available here:

   http://people.redhat.com/~jbaron/rhel4/

Hth!

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