Bug 246145

Summary: HD-5500 card from pchdtv and SBLive (emu10k1) fight for sound index
Product: [Fedora] Fedora Reporter: Dylan R. Semler <dylan.semler>
Component: sndconfigAssignee: Martin Stransky <stransky>
Status: CLOSED RAWHIDE QA Contact:
Severity: medium Docs Contact:
Priority: low    
Version: 7   
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-08-17 07:56:29 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
lspci -v output
none
dmesg output
none
scsconfig.log
none
scsrun.log none

Description Dylan R. Semler 2007-06-28 20:03:25 UTC 
This is my first attempt at bugzilla so let's see how it goes.

Description of problem:
I am running a system with an HD-5500 from pchdtv and an SBLive sound card. 
When booting the system normally, the only sound devices detected are the one
associated with the HD-5500 (Conexant CX8801 and CX88).  

I can get the SBLive card to work by editing /etc/modprobe.conf and changing the
lines 
options snd-card-0 index=0
options snd-emu10k1 index=0

to have index=1 instead of 0.  The result unfortunately has the HD-5500 as my
default sound device.  Since this card only has capture capabilities, none of my
sound works.  I can force the SBLive card to be the default sound by basically
breaking the HD-5500 module.  I place

options btcx_risc index=1 

in /etc/modprobe.conf above the snd-card-0 line and reboot.  What I believe is
happening is this module (associated with the pchdtv card) does not understand
this option so it fails to load (/dev/dvb devices are not created).  Then the
SBLive modules load fine and sound works.

Version-Release number of selected component (if applicable):
using kernel 2.6.21-1.3228.fc7

How reproducible:
Always

Steps to Reproduce:
1.  Install F7 with an HD-5500 card and SBLive sound card using the emu10k1 drivers
2.  Boot system
  
Actual results:
After booting system, Conexant CX8801 (Alsa mixer) and CX88 (OSS mixer) are the
only available sound devices.

Expected results:
SBLive sound devices have lowest index, one of which is the default sound
device.  HD-5500 sound devices load and are placed with higher indexes.

Additional info:
It should be said that I don't really know what I'm talking about.  My use of
the term "index" and "sound device" may be wildly inaccurate.

From what I can tell, the dvb card gets loaded first and its sound devices are
placed as indexes 0 and 1.  When the SBLive card loads later, the options in
/etc/modprobe.conf try to force its indexes to the same values.  When it can't
because the HD-5500 is already there, it fails to load.

This bug might be related to 243542--though they are experiencing no sound
whatsoever with SBLive cards (emu10k1).
Comment 1 Dylan R. Semler 2007-06-28 20:03:25 UTC 
Created attachment 158155 [details]
lspci -v output
Comment 2 Dylan R. Semler 2007-06-28 20:05:25 UTC 
Created attachment 158156 [details]
dmesg output
Comment 3 Martin Stransky 2007-08-15 15:42:01 UTC 
Can you try to use the system-config-soundcard utility for setting it up? Just
run system-config-soundcard from terminal as root.
Comment 4 Dylan R. Semler 2007-08-15 19:34:31 UTC 
On a normal system boot (broken sound) system-config-soundcard detects only the
SB Live card, not the HD-5500 (which may be what is desired).

On the sound test tab:
Testing of the sound fails
Under device settings, there are no PCM Devices to select.

On the settings tab:
Again, there is only one audio card listed in the default audio card drop-down.
 There are no PCM devices to choose from.


I will attach scsconfig.log and scsrun.log.
Comment 5 Dylan R. Semler 2007-08-15 19:36:46 UTC 
Created attachment 161397 [details]
scsconfig.log
Comment 6 Dylan R. Semler 2007-08-15 19:38:31 UTC 
Created attachment 161398 [details]
scsrun.log
Comment 7 Martin Stransky 2007-08-16 12:01:30 UTC 
Yeah, you're right. This problem should be fixed in F8. Please remove these
lines from /etc/modprobe.conf:

alias snd-card-0 snd-emu10k1
#options btcx_risc index=1
options snd-card-0 index=0
options snd-emu10k1 index=0
#remove snd-emu10k1 { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; };
/sbin/modprobe -r --ignore-remove snd-emu10k1

reboot your box, run system-config-soundcard. All your cards should be detected
now. Select your default card and rewrite all config files (on the "System" page).
Comment 8 Dylan R. Semler 2007-08-16 23:11:56 UTC 
Yup, that was the right way to go about fixing it.  Everything is working now. 
Thanks!