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I used to have sound using Ubuntu 10.04 but after I installed some software from synaptic package manager all the sound is gone. I upgraded it to Ubuntu 12.10 hoping that would fix it but still the same. Please help me to fix this issue. This terminal output might help:

dator@dator-HP-Compaq-dc5100-MT-PW100ET:~$ aplay -l
aplay: device_list:252: no soundcards found...
dator@dator-HP-Compaq-dc5100-MT-PW100ET:~$ lspci
00:00.0 Host bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL Memory Controller Hub (rev 04)
00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Integrated Graphics Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03)
00:1d.0 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03)
00:1d.3 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d3)
00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801FB/FW (ICH6/ICH6W) SATA Controller (rev 03)
40:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express (rev 01)
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mmm.. So lspci shows you have an audio controler. It just isnt recognized by Alsa, it seems. Can you go to a terminal and type in 'alsamixer' (without the quotes) And hit F6. Is the soundcard listed then? If so you can select it by up- or down arrow. Let me know. – matv1 Feb 8 at 18:27
I wrote a guide a year ago which might help: docs.google.com/document/d/… – MiJyn Feb 8 at 19:02
@matv1 thank you for reply i try the command you gave me but their is nothing listed. "dator@dator-HP-Compaq-dc5100-MT-PW100ET:~$ alsamixer~ cannot open mixer: No such file or directory" thank you again. – jakemann Feb 23 at 16:28

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