I can tell you how it happened.
Until ALSA 1.0.21, PulseAudio just saw two options for Connector
(System->Preferences->Sound->Output tab): Analog Headphones and Analog
Output.
When it upgraded to ALSA 1.0.22 (installing linux-backports-modules-
alsa-karmic-generic with 2.6.31-20-generic kernel), it started
recognizing three: Analog Headphones, Analog Output, Analog Speakers.
However it did not automatically chose Analog Speakers and it created a big
hassle to discover what was causing this.
I could find out myself (or rather by wrongly filing Bug #548755 against
alsa-utils) and manually switch to Analog Speakers
But other users will think that they simply have no more sound.
It was a month ago (see Bug #548755), with a standard Ubuntu 9.10
install + padevchooser and all its dependencies, regularly updated from
Ubuntu repos.
I hope it answers the questions without the need of alfa-info.sh
In any case, with Lucid and ALSA 1.0.23 it recognizes everything out-of-
the box and very stable, including other bugs that used to happen
frequently are now fixed.
I am using Lucid and I deleted Windows.
Upgradig kernels on a Live USB always cracks.
So I don't see a simple way to make a disposable Karmic install and run
alfa-info.sh.
Ironically enough, if I had Windows it wouldn't take more than 20 seconds to
trigger Wubi installation, have lunch, 20 seconds to trigger update-upgrade,
have desert, reboot and run the script. But for Ubuntu there is no such a thing
:-(
** Changed in: pulseaudio (Ubuntu)
Status: Incomplete => New
--
No Sound after ALSA upgrade.
https://bugs.launchpad.net/bugs/550744
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