I'm using Linux Mint 13 for a year or so but recently I have performed a fresh reinstall and I no longer have sound. The only difference is that currently I have installed KDE version instead of cinnamon. Microphone seems to be working. Volume is up and sound is not set to mute. System is up to date. Here are some details:
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$ cat /etc/issue
Linux Mint 13 Maya
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$ inxi -Ax
Audio: Card: Intel 6 Series/C200 Series Chipset Family High Definition Audio Controller driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture ver: 1.0.24
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$ cat /proc/asound/card0/codec* | grep Codec
Codec: Conexant CX20590
Codec: Intel CougarPoint HDMI
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$ lsmod
Module Size Used by
snd_hda_codec_hdmi 32474 1
snd_hda_codec_conexant 62128 1
arc4 12529 2
snd_hda_intel 33773 3
snd_hda_codec 127706 3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
snd_hwdep 13668 1 snd_hda_codec
thinkpad_acpi 81819 0
snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
rfcomm 47604 0
bnep 18281 2
snd_seq_midi 13324 0
bluetooth 180104 10 rfcomm,bnep
parport_pc 32866 0
ppdev 17113 0
iwlwifi 328352 0
snd_rawmidi 30748 1 snd_seq_midi
mac80211 506816 1 iwlwifi
psmouse 87603 0
snd_seq_midi_event 14899 1 snd_seq_midi
serio_raw 13211 0
uvcvideo 72627 0
videodev 98259 1 uvcvideo
v4l2_compat_ioctl32 17128 1 videodev
snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event
cfg80211 205544 2 iwlwifi,mac80211
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
snd 78855 17 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,thinkpad_acpi,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 15091 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
nvram 14413 1 thinkpad_acpi
tpm_tis 18804 0
mac_hid 13253 0
mei 41616 0
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
wmi 19256 0
i915 468651 3
drm_kms_helper 46978 1 i915
drm 242038 4 i915,drm_kms_helper
sdhci_pci 18826 0
sdhci 33205 1 sdhci_pci
e1000e 156693 0
i2c_algo_bit 13423 1 i915
video 19596 1 i91
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$ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:16.3 Serial controller: Intel Corporation 6 Series/C200 Series Chipset Family KT Controller (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b4)
00:1c.6 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34)
0d:00.0 System peripheral: Ricoh Co Ltd MMC/SD Host Controller (rev 07)
0e:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
Thank You