thanks for your patience. Here are the command results:
rpm -qa|grep alsa:
alsa-utils-1.0.19.git20090206-1.3
alsa-oss-1.0.17.git20080715-2.19
alsa-plugins-pulse-1.0.19.git20090123-1.11
alsa-driver-kmp-pae-1.0.19.20090216_2.6.27.7_9.1-3.1
alsa-plugins-1.0.19.git20090123-1.11
alsa-tools-1.0.19.git20090120-1.10
alsa-1.0.19.git20090214-1.1
alsa-firmware-1.0.19.git20090120-1.1
rpm -qa|grep pulse:
libpulse0-0.9.12-9.6
pulseaudio-esound-compat-0.9.12-9.6
alsa-plugins-pulse-1.0.19.git20090123-1.11
libpulsecore4-0.9.12-9.6
vlc-aout-pulse-0.9.8a-9.1
libxine1-pulse-1.1.15-20.8
pulseaudio-0.9.12-9.6
rpm -q libasound2:
libasound2-1.0.18-8.7
uname -a:
Linux obelix 2.6.27.7-9-pae #1 SMP 2008-12-04 18:10:04 +0100 i686 i686 i386 GNU/Linux
cat /etc/modprobe.d/sound:
options snd slots=snd-hda-intel
u1Nb.HWaQlUCDee5:ICH10 HD Audio Controller
alias snd-card-0 snd-hda-intel
As to inconsistencies in mixer settings I admit that I am totally new to using audio at all. I used kmixer (the graphic interface) to define settings which seemed consistent to me. I’ll go over it, again, hopefully complying with your advice.
thanks again, Bernd