Hi, Thanks for the reply. Now I am able to run the pulseaudio daemon with echo cancel source and sinks without any problem on my ubuntu desktop system. Now I want to enable echo cancel module on my omap4 (PANDA) board. I followed the same steps as i have done for ubuntu desktop. Pulseaudio daemon is working fine but when i tried to load the Echo cancel module, the daemon is getting killed. I think the problem is with the sample rate.I have tried with both 48000 and 44100hz rates but the same problem occurs. Please find the attached log when i load the echo cancel module. Thanks Regards, Abdul Moiz. <div class="gmail_quote">On Sun, Jul 24, 2011 at 7:13 PM, Colin Guthrie <<a href="mailto:gmane@colin.guthr.ie">gmane@colin.guthr.ie</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">'Twas brillig, and ABDUL MOIZ at 22/07/11 10:02 did gyre and gimble: > Hi, <div class="im">> Thanks for the reply. > > As adviced by you,I have followed the procedure given in the link > > > <a href="http://colin.guthr.ie/2010/09/compiling-and-running-pulseaudio-from-git/" target="_blank">http://colin.guthr.ie/2010/09/compiling-and-running-pulseaudio-from-git/</a> > > I got the code from the git source as told in the guide and > everything was going well but i got error at this step > </div>> $ src/pulseaudio -n -F src/<a href="http://default.pa" target="_blank">default.pa</a> <<a href="http://default.pa" target="_blank">http://default.pa</a>> -p <div class="im">> $(pwd)/src/.libs/ -vvvv > > You can check the attached log file to see the error. </div>Interesting. Perhaps this indicates some kind of corruption in the database files used for restoring volume and devices... can you save the files in ~/.pulse/ somewhere (we may want to analyse them later to prevent this happening again) and then just trash that whole folder so you can start up "clean"? <div class="im"> > Then I have again restarted the build process by giving the path to be > /usr while configuring i.e > > $ ./configure --prefix=/usr > > And the build was successful, and I can able to run the pulseaudio daemon. </div>Strange... this shouldn't matter much. <div class="im"> > In the CLI terminal, i have changed the default source and sink to echo > cancel as shown below: > > <<set-default-source alsa_input.pci-0000_00_1b.0.analog-stereo.echo-cancel > <<set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo.echo-cancel > > Now when i test using gst pipeline, i can observe that echo & noise has > been reduced. > To confirm whether echo cancel is working or not , i tried to see > verbose log as shown below: > > $ pulseaudio -v > > But I am getting the following: > > I: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted > I: main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted > I: core-util.c: Successfully gained nice level -11. > I: main.c: This is PulseAudio 0.98-dev-438-g6add-dirty > I: main.c: Page size is 4096 bytes > I: main.c: Machine ID is fstl-laptop. > I: main.c: Session ID is > 2012bf02773ecb9a7c891fbb4e25bc80-1311316492.289922-1263349109. > I: main.c: Using runtime directory /home/fstl/.pulse/fstl-laptop-runtime. > I: main.c: Using state directory /home/fstl/.pulse. > I: main.c: Using modules directory /usr/lib/pulse-0.98/modules. > I: main.c: Running in system mode: no > E: pid.c: Daemon already running. > E: main.c: pa_pid_file_create() failed. </div>This is expected. You can only run one instance of PA at a time. <div class="im"> > when i kill the pulseaudio daemon, then also the samething coming. > And also I have tried the below commands: > > $ pulseaudio --kill > $ killall pulseaudio > $ killall -9 pulseaudio > $ rm -rf ~/.pulse* > $ sudo rm -rf /tmp/pulse* > > But still "pulseaudio -v" is not working. > and "pulseaudio --kill" also being executed, but pulseaudio daemon is > still running. </div>This is fully expected. PA supports an autospawn feature and it's highly likely that something running on your desktop is requesting PA to be run. e.g. gnome-volume-control-applet, or pretty much any gtk application. <div class="im"> > So the problem is pulseaudio instance is not getting killed properly. > Can you please help me to get clean start and kill of pulseaudio daemon > and as well as to get the log messages of running pulseaudio daemon. </div>When developing on PA, I very much recommend setting autospawn=no in /etc/pulse/client.conf or ~/.pulse/client.conf to ensure that the system version of PA does not automatically respawn itself. I think you're generally getting a bit muddled up between your system's PA install and the one you are running yourself. It's a little tricky to make things behave themselves, but the guide I linked to previously mentions this, so it's probably worthwhile reading the whole article again to make sure nothing has been missed. Hope that helps. <div><div></div><div class="h5"> Col -- Colin Guthrie gmane(at)<a href="http://colin.guthr.ie" target="_blank">colin.guthr.ie</a> <a href="http://colin.guthr.ie/" target="_blank">http://colin.guthr.ie/</a> Day Job: Tribalogic Limited [<a href="http://www.tribalogic.net/" target="_blank">http://www.tribalogic.net/</a>] Open Source: Mageia Contributor [<a href="http://www.mageia.org/" target="_blank">http://www.mageia.org/</a>] PulseAudio Hacker [<a href="http://www.pulseaudio.org/" target="_blank">http://www.pulseaudio.org/</a>] Trac Hacker [<a href="http://trac.edgewall.org/" target="_blank">http://trac.edgewall.org/</a>] _______________________________________________ pulseaudio-discuss mailing list <a href="mailto:pulseaudio-discuss@lists.freedesktop.org">pulseaudio-discuss@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss" target="_blank">http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss</a> </div></div></blockquote></div>