Red Hat Bugzilla – Bug 832633
Realtek AC'97 not working
Last modified: 2013-03-01 23:02:56 EST
Description of problem: Both after installation and updates, Realtek AC'97 sound card does not work. No sound is produced even after installing official drivers / firmware from Realtek's website. Version-Release number of selected component (if applicable): Fedora 17 (i686) kernel 3.4.0-1.fc17.i686 kernel 3.3.4-5.fc17.i686 alsa-firmware-1.0.25-1.fc17 alsa-lib-1.0.25-3.fc17 alsa-plugins-pulseaudio-1.0.25-3.fc17 (32-bit) How reproducible: Always Steps to Reproduce: 1. Install Fedora 2. Boot system and login 3. No sound. No speaker icon present in panel either Actual results: No sound. No speaker icon present in panel either Expected results: Sound should come from speakers / headset. Speaker icon should be present in panel Additional info: Enclosed alsa-info log
Created attachment 592276 [details] alsa-info log
Your alsa info shows a number of things in the off state. Have you tried using amixer to adjust volume on them? Also, are both 3.4.0-1 and 3.3.4-5 showing this behavior?
Yes, this was present in both kernels. I can't explain why but the problem only occurs if the only environment installed is the LXDE environment. Gnome, XFCE and KDE have sound working right out of the box. This is remedied in LXDE, when no other environments are installed, if and only if I install the following additional packages which are not provided by default if I install the LXDE package group only, unchecking the Gnome package group, while leaving all other defaults enabled via "Customize Now" with the Fedora installation DVD - pnmixer, paprefs, pavucontrol, pavumeter. I don't think it's an actual alsa issue as amixer has no effect on my sound card no matter what its set to. Only PulseAudio controls have an effect which is probably why the problem remedied itself when I installed the above mentioned pulse packages.
Once those packages are installed, no setting changes are needed to enable audio.
This isn't a kernel problem then. Reassigning to LXDE.
yum remove alsa-plugins-pulseaudio fixes the problem. Not an LXDE problem.
That would indicate a problem with pulseaudio. Andrew, can you still reproduce the problem with a fully updated F17? Is pulseaudio running when you log in to LXDE?
This is happening on a fully updated F18 too. Assigning to pulseaudio. I was able to reproduce this on MATE + AMD Radeon HDMI output. Could not get sound even after removing alsa-plugins-pulseaudio.
So is pulseaudio running for your user? Are you sure the sound doesn't end up on the digital output?
PulseAudio works fine for me now. I would recommend anyone having issues to install the package "pavucontrol" and looking at their mixer settings and pulse audio settings.