I've upgraded many of the packages on my system using Synaptic, which upgraded various components including the kernel and KDE4. As a result I now no longer have audio.
uname -a gives me:
lspci -vv gives me:
KDE is on version 4.4.3
I don't have PulseAudio installed.
Alsa is on version 1.0.21
Using KDE's Settings tool for audio I've tried both the Xine and GStreamer backends, which give me options of outputting to either HDA Intel (ALC268) or to Jack. Neither option works.
Running alsactl init both as root and as the normal user gives me the following error:
I'm fairly experienced as a Linux user, but I haven't had to reconfigure my sound since I moved from Slackware to Ubuntu 6 04, 4 years ago, and I don't think I've done a kernel recompile since then either.
The machine in question is my Acer Aspire 5720 Laptop. sound was working perfectly prior to the upgrade, Google has given me various ideas but none of them have worked yet.
EDIT I've tried the following:
EDIT2 Right, I've got it partially working, by following olejorgenb's steps:
Restarting kmix then lets me unmute the sound and it works.
But how can I make this change stick?
EDIT3 As per olejorgenb's suggestion I've tried adding:
to /etc/rc.local which didn't work. Then I tried putting it in /etc/init.d/speech-dispatcher as this is one of the processes I have to kill to get sound working manually. I see the usual message about
scroll past during startup, but still no sound.
Anymore suggestions from anyone, how to get my sound to come up automagically on startup?
SOLUTION: It turns out that the above was a red herring, the problem lay with the fact that I wasn't a member of the audio group (or possibly pulse or pulse-access) adding myself to this group, and logging back in (I may have been able to bypass the login but I wanted to make sure) restored working sound to my system.
Have the requirements for either the kernel or Alsa changed so that to make audio work, you now need to be a member of the audio group. Or have Debian made changes? Or did the update change my membership?
Depending on which of these is probably the cause, depends where I submit a bug to.
Thanks for all of your help.
Are you a member of the audio group?
Then that might be an easy fix!
answered 10 May '10, 04:09
I'm just throwing out something here:
First off you could try playing around with http://www.alsa-project.org/main/index.php/HDA_Analyzer
If you get
I'd try test and generic first
I take in now way responsibility for what this might do. (You might have to reboot a couple times)
What have you tried so far? alsaconf didn't help? Did you try to rebuild alsa from source?
answered 06 May '10, 12:33
Hi, I had the same problems (Debian 6 Squeeze), my soundcard was working one moment and then on the next boot it just would not work, no matter what I tried, interestingly the Orca screen reader worked. I (Googled) the solution and found this page, lucky for me Im a noob and was struggling to install the alsa drivers etc & work out what to do, however the other day when I booted my system <fsck> was automatically forced to run by the system while booting (After 26 boots). When it had finnished and the login screen loaded I could tell that the sound was working again. And it is! Maybe you should try to force <fsck> to see if this works.