Created attachment 710347 [details] Pulseaudio log attained by running pulseaudio -vvvv Description of problem: When playing sound through pulseaudio on my HDA Intel PCH sound device (Conexant CX20590), I encounter frequent glitches (buffer underruns). This is on a Lenovo Thinkpad T420 Version-Release number of selected component (if applicable): 3.8.2-206.fc18.x86_64 How reproducible: Playing music through pretty much any program on the default pulseaudio/alsa configuration. Steps to Reproduce: 1. Play music and wait Actual results: Glitches and popping Expected results: Glitch-free sound Additional info: The issue can be worked around by adding tsched=0 to the following line in /etc/pulse/default.pa: load-module module-udev-detect so that you have: load-module module-udev-detect tsched=0 However, this workaround has a drawback that flash no longer outputs sound correctly I've attached 3 files: 1. pulseaudio.log - shows the buffer underruns 2. alsa_time_test.log - shows a failed assertion when running the alsa_time_test program - see http://www.freedesktop.org/wiki/Software/PulseAudio/Backends/ALSA/BrokenDrivers for more info 3. alsa-info.txt - debug and hw information about my setup
Created attachment 710349 [details] ./alsa-time-test hw:0 > alsa_time_test.log The last 1000 lines of output. See http://www.freedesktop.org/wiki/Software/PulseAudio/Backends/ALSA/BrokenDrivers
Created attachment 710350 [details] HW and debug info
Are you still seeing this with 3.9.8 or newer?
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.