It looks like you have two sound devices? And HDA ATI SB and an HDA ATI HDMI ? Or is that just a characteristic of your motherboard, where HDMI is a digital audio?
Make certain you check your mixer thoroughly … I note:
amixer set 'Front Mic',0 87%,87% on
amixer set 'Front Mic Boost',0 33% 33%
amixer set 'Line',0 97%,97% on
amixer set 'Mic',0 100%,100% on
amixer set 'Mic Boost',0 33% 33%
amixer set 'Capture',0 Capture 31 100% off Capture 31 100% off
amixer set 'Capture',1 Capture 0 0%,Capture 0 0% on
amixer set 'Input Source',0 Items: 'Mic' 'Front Mic' 'Line' Item0: 'Mic'
amixer set 'Input Source',1 Items: 'Mic' 'Front Mic' 'Line' Item0: 'Mic'
You have a choice between two Input Mic sources: Mic or Font Mic. Ensure you have the correct one selected.
For your MS-7367 you could also try editing your /etc/modprobe.d/sound file to see if that helps…
From the ALSA-Configuration.txt files, the possible options for an ALC888 are:
ALC883/888
3stack-dig 3-jack with SPDIF I/O
6stack-dig 6-jack digital with SPDIF I/O
3stack-6ch 3-jack 6-channel
3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
6stack-dig-demo 6-jack digital for Intel demo board
acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
acer-aspire Acer Aspire 9810
medion Medion Laptops
medion-md2 Medion MD2
targa-dig Targa/MSI
targa-2ch-dig Targs/MSI with 2-channel
laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
lenovo-101e Lenovo 101E
lenovo-nb0763 Lenovo NB0763
lenovo-ms7195-dig Lenovo MS7195
haier-w66 Haier W66
6stack-hp HP machines with 6stack (Nettle boards)
3stack-hp HP machines with 3stack (Lucknow, Samba boards)
6stack-dell Dell machines with 6stack (Inspiron 530)
mitac Mitac 8252D
auto auto-config reading BIOS (default)
Given you have an MSI with a digital output, I suspect the "targa-dig" is most applicable to you. So try an edit to your /etc/modprobe.d/sound file that looks like:
options snd slots=snd-hda-intel,snd-hda-intel
dP62.3eubOLksOn3:Radeon X1200 Series Audio Controller
alias snd-card-0 snd-hda-intel
5Dex.Zgl4coiAuT0:SBx00 Azalia
alias snd-card-1 snd-hda-intel
options snd-hda-intel model=targa-dig
Then restart your alsa kernel module with rcalsasound restart and test your sound and mic.
I've never seen this dual snd-hda-intel combination before, so that is a very speculative guess on my part.
I hope you have been trying different applications, to ensure the reason you can not get your mic do work is not because you have your recording application misconfigured.
If you have not, then I recommend playing around with command lines like:
arecord -d 10 myrecording.wav
and
arecord -d 10 -f cd secondrecording.wav
where the -d 10 specifies the length of the recording in seconds, in this example 10 seconds ]
… or in the case of KDE there is also krec and krecord