There could be many reasons for the mic not working. Its possible pulse audio is not configued for the recording app that you are using. Its possible the mic is muted in the mixer.
Please, to assist in the diagnosis of the problem, with your PC connected to the internet, with your mic configured best your can for recording, can you run in a konsole/xterm the alsa-info.sh diagnostic script by sending the following command as a regular user:
/usr/sbin/alsa-info.sh
and select SHARE/UPLOAD when asked. Let the script run to completion. When it is complete it will upload the diagnostic information to an alsa site, and the script will put in the konsole/xterm a web/internet address you are to share. Please post that address here and we will look at it and see if it provides any clues as to why you PC’s mic is not recording.
I see this your first post on our forum. Welcome to openSUSE GNU/Linux and to the openSUSE forum. Lets see if together we can sort this.
I note your nVidia caard is the default card-0, while the audigy is card-1. That could cause some hiccups. Still, the fact you have sound suggests to me you have worked around that.
I note thou, your PCs mixer is not properly configured for recording audio. Please consider the following that I extracted from the script:
!!-------Mixer controls for card 1 [Audigy2]
Card hw:1 'Audigy2'/'SB Audigy 2 [SB0350b] (rev.4, serial:0x20061102) at 0xbf00, irq 20'
Mixer name : 'SigmaTel STAC9750,51'
....
**Simple mixer control 'PCM',0**
Capabilities: pvolume cvolume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 100 Capture 0 - 100
Front Left: Playback 100 [100%] [0.00dB] **Capture** 0 **[0%]** -99999.99dB]
Front Right: Playback 100 [100%] [0.00dB] **Capture** 0 **[0%]** -99999.99dB]
....
**Simple mixer control 'Synth',0**
Capabilities: pvolume cvolume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 100 Capture 0 - 100
Front Left: Playback 50 [50%] -20.00dB] **Capture** 0 **[0%]** -99999.99dB]
Front Right: Playback 50 [50%] -20.00dB] **Capture** 0 **[0%]** -99999.99dB]
....
**Simple mixer control 'Mic',0**
Capabilities: pvolume cvolume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 100 Capture 0 - 100
Front Left: Playback 0 **[0%]** -99999.99dB] **Capture** 0 **[0%]** -99999.99dB]
Front Right: Playback 0 **[0%]** -99999.99dB] **Capture** 0 **[0%]** -99999.99dB]
**Simple mixer control 'Mic Boost ( 20dB)',0**
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback **[off]**
PCM capture is muted ( @ 0%) , as is Synth (where Synth may be unimportant - I don’t have your hardware so I do not know what Synth does).
But most important Mic has 0% playback and capture is incorrect ! That effectively blocks any recording. In addition, Mic Boost is OFF. That may also be a bad setting and likely it is better to be on.
How familiar are you with GNU/Linux ? If you find that the kmixer does not give you the control over your mic that you need, you could in a konsole/xterm run ‘alsamixer’ and use that to tune the PCM and Mic and Mic Boost settings. If you fail at that, let me know, and I can try to provide you some amixer commands to do this same.
Good luck.
p.s. What application are you using to test your mic functionality ?