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lspci gives me these two devices:

$ lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
02:00.1 Audio device: ATI Technologies Inc RV710/730

There are two devices listed in System Settings|Sound|Output:

  • RV710/730 Digital Stereo (HDMI)
  • Internal Audio Analog Stereo

And finally, the are not muted!

Also, when I run an application that accesses the sound card, I can see it in the Applications tab.

Any ideas?

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up vote 2 down vote accepted

It seems that the new kernel update (3.0.0-13) solved the problem.

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I am depending on a previous Launchpad q/a (last answer) [1] and suggest compiling Alsa. But instead of grabbing Realtek drivers (same as Alsa) just download latest files via [2]. You need to download just alsa-driver, alsa-lib and alsa-utils packages. Pick latest ones which has 1.0.24 version. After that just compile the packages as explained there.

If you get an error about panelw library while compiling alsa-utils, just change the configure step as this:

./configure --with-curses=ncurses


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I couldn't compile alsa-driver in 11.10. I am getting this error message: ioctl32_new.c:23:28: fatal error: linux/smp_lock.h: No such file or directory – Mohammad Moghimi Nov 6 '11 at 1:11
This error occurs because of removal of BKL: That means our kernel is too update for Alsa packages. With those packages we can fix somehow (dirty way) smp_lock error but there will be others. So, grab the latest snapshots here: Compiling is a bit tricky. First, install patch and libncurses5-dev directly. Then use this sudo apt-get install xmlto --no-install-recommends to install just xmlto. When compiling alsa-utils use this: ./configure --with-curses=ncurses --disable-nls – heartsmagic Nov 7 '11 at 1:18
Thanks heartsmagic for the help. I could make alsa-driver and alsa-lib. When I'm making alsa-utils, I'm getting this: checking for snd_ctl_elem_add_enumerated... no configure: error: No user enum control support in alsa-lib – Mohammad Moghimi Nov 10 '11 at 9:35
Have you successfully installed alsa-driver and alsa-lib after compiling them? I think, this error occures because of no installation of the new packages. – heartsmagic Nov 10 '11 at 10:50
Yes, I installed both. I think I did "make install" too. I'll check again. – Mohammad Moghimi Nov 12 '11 at 7:44

I had the same problem. I solved reinstalling alsa modules sudo apt-get install --reinstall linux-image-$(uname -r)

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