Warning
After upgrading you might not get the sound from your Sound Blaster Audigy sound card.
Open GNOME ALSA Mixer from Applications -> Sound & Video -> GNOME ALSA Mixer
Choose the tab: ?SigmaTel??
Turn on ?Audigy Analog/Digital Output Jack?
That?s it now your sound should work as normal!
First, one needs to identify one's sound card.
Open a terminal windows and type:
cat /proc/asound/cards
This has been tested with the following cards:
0 [Audigy2 ]: Audigy2 - Audigy 4 [SB0610]
Audigy 4 [SB0610] (rev.0, serial:0x10211102) at 0x9400, irq 201
This note applies only to the SB0610 and may or may not work for other Audigy 4 cards.
The controls that have been tested and verified are:
Mic and Line-in.
In order to get sound capture working, set the following controls as they affect both Mic and Line-in:
On the alsamixer Capture display:
1) Master -> 100% or 0dB (affects both analog and digital capture sources)
2) Analog Mix -> 100% or 0dB (affects only analog sources)
Controls that affect Mic input:
On the alsamixer Playback display:
(these will eventually appear on the capture display once developers add the feature):
1) Mic boost (If you need +20dB boost)
2) Mic Select -> Mic1
On the alsamixer Capture display:
1) Mic -> 100%
Controls that affect Line-in input:
1) Line -> 100% or +12dB
Source:
https://bugtrack.alsa-project.org/wiki/wikka.php?wakka=audigy4capture
http://www.alsa-project.org/main/index.php/Matrix:Module-emu10k1