I've just installed Ekiga 3.2.7 on OpenSuse 11.4, 22.214.171.124-1.2-desktop, on a Thinkpad T410 (single audio combo jack).
I've followed the Audio Setup page, set all audio devices to the Default (PTLIB/ALSA) (and later everything else just to check), I confirmed that my ALSA configuration was working properly as both echo tests functioned flawlessly:
$ arecord -D plughw:0,0 -c 1 -r 8000 -f S16_LE - | aplay -D plughw:0,0 -c 1 -r 8000 -f S16_LE -
$ arecord -D plughw:0,0 -c 1 -r 16000 -f S16_LE - | aplay -D plughw:0,0 -c 1 -r 16000 -f S16_LE -
But I am unable to perform an echo test within Ekiga. I can receive calls and hear the audio, but the microphone will not pick anything up. Looking at other archives, I didn't see a solution that worked for me.
More info that might be useful:
tells me that Master and Capture are both 100%
$/sbin/lspci | grep Aud
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
The codecs are set to their defaults: Speex, PCMU, PCMA, silence detection and echo cancelation are not enabled.
The same headpiece performs under skype.
I'm happy to send any other information.