3 Nov
2009
3 Nov
'09
5:38 a.m.
Here's the next instalment. First, the background.
The problem was that a Creative Audigy2 card that had worked perfectly
in Ubuntu 8.04 suddenly went silent after an upgrade to Ubuntu Studio
9.04. It still worked perfectly in Windows on the same dual boot machine.
David Morrell wrote:
frank pirrone wrote:
I've done a bit more testing and reported it on the Ubuntu
bug reporting
system as follows. The bug is at;
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/406356
To reproduce the bug then repair the damage, do the following.
Delete /var/lib/asound.state (to mimic a fresh install, when it has not
yet been created)
Run
alsactl init
The sound card is probed. Alsactl reports;
Unknown hardware: "Audigy2" "SigmaTel STAC9750,51"
"AC97a:83847650"
"" ""
Hardware is initialized using a guess method
A version of asound.state is created that lacks (at least) a master
volume mute switch. There is no sound output.
Restore the previously good asound.state, run 'alsactl restore' and the
card works again.
Does this mean that something (I don't know what) needs to be improved
so it can recognise this card (Audigy 2 Value [SB0400)?
--
David Morrell
Web site: www.davidmorrell.ozeweb.net (when I get it on air again :)
<http://www.davidmorrell.ozeweb.net>
Email: dsmorrell56(a)dodo.com.au <mailto:dsmorrell56@dodo.com.au>
Ph: 0408 842 955 / 03 6343 5131
Here's my /var/lib/alsa/asound.state file.
You can try moving yours
aside by renaming it, and dropping this in to see if it makes any
difference. I have the Audigy2 card in this ArtistX/Ubuntu 9.10 Dell
Workstation, and it is fully functional.
Amazing! Eureka etc. Thanks very much indeed, Frank. I've put about 15
hours into this problem and you've solved it. Now the question is, how
did a bad asound.state file get created as a default during
installation? Does anyone know where I should go to alert someone who
can look at this?