try
# Enable basic debugging, do jiffies check and dump position on each period and hardware pointer update calls # Usefull when the lowlevel (specific) hardware driver is somehow broken echo 29 > /proc/asound/card0/pcm0p/xrun_debug examine the system log to look for any message about the hardware pointer http://www.alsa-project.org/main/index.php/XRUN_Debug -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247719 Title: crackling, popping, clicking in playback to audigy2 surround51 device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1247719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs