Try to determine the make of your sound card
Run the following command in a terminal:
Code:
aplay -l | grep card
This will probe your system, filtering lines that include the string 'card'. If you get results when you run this, you should be able to tell what make your sound card is. My results look like:
Code:
card 0: Audigy2 [SB Audigy 2 ZS [SB0350]], device 4: p16v [p16v]
card 1: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
If you have an Intel card, one thing that worked for me in the past is this: http://www.webupd8.org/2010/11/fix-h...-no-sound.html
Finally, if you run the command
Code:
sudo lsmod | grep snd
and see results that look similar to this:
Code:
snd_hda_intel 24140 4
snd_hda_codec 90901 1 snd_hda_intel
snd_emu10k1_synth 12964 0
snd_emux_synth 33506 1 snd_emu10k1_synth
snd_seq_virmidi 13309 1 snd_emux_synth
snd_seq_midi_emul 13482 1 snd_emux_synth
snd_emu10k1 137068 5 snd_emu10k1_synth
snd_ac97_codec 105614 1 snd_emu10k1
ac97_bus 12642 1 snd_ac97_codec
snd_pcm 80244 6 snd_hda_intel,snd_hda_codec,snd_emu10k1,snd_ac97_codec
snd_util_mem 13786 2 snd_emux_synth,snd_emu10k1
snd_hwdep 13274 3 snd_hda_codec,snd_emux_synth,snd_emu10k1
snd_seq_midi 13132 0
snd_rawmidi 25269 3 snd_seq_virmidi,snd_emu10k1,snd_seq_midi
snd_seq_midi_event 14475 2 snd_seq_virmidi,snd_seq_midi
snd_seq 51291 5 snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_midi,snd_seq_midi_event
snd_timer 28659 3 snd_emu10k1,snd_pcm,snd_seq
snd_seq_device 14110 5 snd_emu10k1_synth,snd_emu10k1,snd_seq_midi,snd_rawmidi,snd_seq
snd 55295 26 snd_hda_intel,snd_hda_codec,snd_emux_synth,snd_seq_virmidi,snd_emu10k1,snd_ac97_codec,snd_pcm,snd_hwdep,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 12600 1 snd
snd_page_alloc 14073 3 snd_hda_intel,snd_emu10k1,snd_pcm
then most likely you're not in for too much of a headache.
Unmuting
Also, if you have multiple cards, try going to "Sound Preferences", selecting the "Output" tab, and toggling between your various options.
You could also try downloading a mixer, like Gnome Mixer, and manually unmuting things. Try different applications.
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