Public bug reported:
I have a system with two sound cards. An onboard VIA822 sound chip
(which I don't really use) and an SBLive sound card (which I wish to
use as my default card). Under all previous releases of Ubuntu (i.e.
Warty through to Feisty) this setup worked fine, i.e. I selected SBLive
from the volume control, adjusted my sound levels and all was well.
However having upgraded to Gutsy it's now pot luck whether it works or
not. Upon booting then sometimes the SBLive gets allocated as card(0)
and the VIA822 gets allocated to card(1). In this case sounds are
output from the SBLive, nothing appears from the VIA822 and I am a happy
user. On other occasions the VIA822 get allocated to card(0), the
SBLIve becomes card(1) sound now appears from the VIA822 but I simply
cannot get any sound at all to appear from the outputs of the SBLive.
Having done some half hearted digging into this late last night I know I
could either disable the onboard sound in the BIOS (when I remember I'll
probably do this "for now") or I could add the VIA822 to some sort of
Blacklist file (I skimmed through this on a forum post somewhere so I'm
sketchy on details) but sound is definitely not working properly for me
in Gutsy.
But the main reason for filing this bug report is I think that the
preferences applet should make it easier to manage multiple sound cards.
Currently you can go to the System" > "Preferences" > "Sound" menu
applet but it's not clear whether choosing "Default Mixer Tracks"
actually selects the soundcard you wish to use or whether it simply
determines which controls get shown in the volume controls mixer applet
(I suspect the latter)
It's also not clear whether you can use multiple cards at once ? And
there doesn't appear to be a GUI way to force the cards to be detected
in a particular order i.e. "always use card X as card(0), card Y as
card(1), card z as card(2)" etc. etc.
All in all I would say that there definitely needs to be something in
the sound preferences dialogue where you can choose your default sound
card !
** Affects: ubuntu
Importance: Undecided
Status: New
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Sound is intermittent with two sound cards, needs better GUI control
https://bugs.launchpad.net/bugs/156796
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