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My sound is not working.

This is the output of sudo lspci:

00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corporation 82945G/GZ/P/PL PCI Express Root Port (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1d.0 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [IDE mode] (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
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closed as not a real question by Jorge Castro, Jacob Johan Edwards, jokerdino, RolandiXor, belacqua Sep 2 '12 at 5:16

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3 Answers

Try DebuggingSoundProblems. It might resolve your issue.

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  • Add this ppa:

sudo add-apt-repository ppa:ubuntu-audio-dev/ppa
sudo apt-get update

  • Install the linux-alsa-driver-modules package:

sudo apt-get install linux-alsa-driver-modules-$(uname -r)

  • Reboot.
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when i try to install linux-alsa-diver i found below errorsasalam@asalam-desktop:~$ sudo apt-get install linux-alsa-driver-modules-$(uname -r) Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package linux-alsa-driver-modules-3.2.0-24-generic E: Couldn't find any package by regex 'linux-alsa-driver-modules-3.2.0-24-generic' –  Asalam Jun 13 '12 at 12:42
    
It is because the team didn't built yet the modules for your kernel. See here: launchpad.net/~ubuntu-audio-dev/+archive/ppa –  Frantique Jun 13 '12 at 14:28
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I got the same problem and after three weaks of research, installing and uninstalling drivers, performing a couple of clean installations, and more, I was able to fix the problem by installing a new kernel.

Now I am running Ubuntu 12.04 with latest kernel, 3.4.4. Everything is working great. I think that this solution is not recommended but if you decide to try it here is how:

  1. Download kernel modules from this page, depending on your platform amd64 or i386.

  2. Execude this commad (change files except of your downloaded files):

    sudo dpkg -i linux-headers-3.4.4-030404_3.4.4-030404.201206221555_all.deb linux-headers-3.4.4-030404-generic_3.4.4-030404.201206221555_i386.deb linux-image-3.4.4-030404-generic_3.4.4-030404.201206221555_i386.deb linux-image-extra-3.4.4-030404-generic_3.4.4-030404.201206221555_i386.deb
    
  3. Then update GRUB:

    sudo update-grub
    
  4. Reboot:

    sudo reboot
    
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