Can you play an mp3 file using "mpg123" or a wav file using "aplay"?
You can also try playing an ogg file with "ogg123".

Only one of the above is needed
-> If it works, check an application which uses GStreamer / Xine directly
-> If it doesn't, check the permissions of the contents of /dev/snd/, and ensure that Pulseaudio is correctly configured if you need it, otherwise remove it. Pulseaudio works fine for me.

yeah I can do that!

Executing

aplay /usr/share/sounds/pop.wav gives:

Wiedergabe Wave '/usr/share/sounds/pop.wav' : Signed 16 bit Little Endian, Samplingrate: 44100 Hz, Mono

(Wiedergabe is - in this context - the German word for "Playing")

and I hear the sound immediately. Other software, that does not work with phonon (e.g.) skype does work as well

Ok, I installed xine-ui. Everything works fine, I hear sound, no problem.

All sound related devices in /dev have, in my opinion, correct permission settings (I am member of the audio group):

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In
~$ ls -l /dev/ | grep audio
crw-rw----+ 1 root audio    14,   4 2010-02-28 08:17 audio
crw-rw----+ 1 root audio    14,   3 2010-02-28 08:17 dsp
crw-rw----+ 1 root audio    14,   0 2010-02-28 08:17 mixer
crw-rw----+ 1 root audio    14,   1 2010-02-28 08:17 sequencer
crw-rw----+ 1 root audio    14,   8 2010-02-28 08:17 sequencer2

PulseAudio is not installed on my system...

Cheers

Phil

Does System Settings > Multimedia work when performing a test on a device?

no, it doesn't!

Only if i start the dialog as root..

regards

Phil

If you create a new user, does it work there?

I logged in as a different user (which was created a long time ago) and it worked! No problems with the systemsettings dialog no problems with amarok.

So it seems to lie in my personal user configuration. Which configuration files can be relevant for this?

Cheers

Phil

Ok, I compared the file .kde/share/config/phonondevicesrc of the two users, the working one and the not working one, they are the same...

The directory .kde/share/kde4/services/phononbackends does exist for my user ( the one where sound not works) but it doesn't exist for the other user....

Ok, I have renamed my .kde directory so that kde recreates the config files... no success .
That is really strange isn't it? I mean I'd expect phonon to be configured as a part of kde... But that seems not to be the case... Or is it an issue which is configured globally?
I'm really not sure...

Cheers Phil

please remove ~/.config/kde.org/ which contains only Phonon configuration.

ok:

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rm -r /home/user/.config/kde.org/

rebooted... no success

I looked if there was a .config/kde.org directory for the user with the working sound. But there was no.

anyway I'm amazed that you still have an answer to my new comments.

Cheers

Phil

Ah now it works!!!

I have run:

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rm $(kde4-config --localprefix)/cache-$(hostname)/libphonon/hardwaredatabase
kbuildsycoca4 --noincremental
rm -r ~/.config/kde.org
rm ~/.kde/share/config/phonondevicesrc
rm -r ./.xine

Then I logged out of kde and logged in again...

I'm not sure what eventually did the trick... But all together it worked... thanks a lot!!

Hi, I'm new to Linux and KDE as well. I am having the same problem. I had Fedora 11 and sound worked there. Recently I upgraded to Fedora 12 and the sound is gone. I get a notification at the time of logging in saying that phonon is not working. (From both root and normal users)

I tried as bcooksley said.

bcooksley wrote:Please execute the following command in Konsole:

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rm $(kde4-config --localprefix)/cache-$(hostname)/libphonon/hardwaredatabase
kbuildsycoca4 --noincremental

but it couldn't find the hardwaredatabase file.

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[root@localhost kpc]# rm $(kde4-config --localprefix)/cache-$(hostname)/libphonon/hardwaredatabase
rm: cannot remove `/root/.kde//cache-localhost.localdomain/libphonon/hardwaredatabase': No such file or directory
[root@localhost kpc]# rm $(kde4-config --localprefix)cache-$(hostname)/libphonon/hardwaredatabase
rm: cannot remove `/root/.kde/cache-localhost.localdomain/libphonon/hardwaredatabase': No such file or directory


What to do? I tried sound-check from System Setting > Multimedia > Device Preference > Audio output > Music and it didn't work.

@heavensdevil6909: Please ensure that no sound server ( such as Pulseaudio ) is interfering. Ensuring that the underlying backend is configured to use it if present should rectify the issue.

bcooksley wrote:@heavensdevil6909: Please ensure that no sound server ( such as Pulseaudio ) is interfering. Ensuring that the underlying backend is configured to use it if present should rectify the issue.

Pulseaudio is there. I did a ps -elf and this is what i got.

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[root@localhost ~]# ps -elf | grep pulseaudio
1 S rahul     1986     1  6  69 -11 - 25428 poll_s May09 ?        00:09:23 /usr/bin/pulseaudio --start
0 S root      4234  4036  0  80   0 -  1054 pipe_w 02:08 pts/1    00:00:00 grep pulseaudio


How to check if the backend is configured? Please help I am a newbie.