Description of problem: A spyke in volume happens when audio is initialized by any application You hear the classical popping sound, whenever an app uses audio, as if pulseaudio spyked the volume UP, instead of ramping it up "slowly" Plus, in many apps che volume control acts "jerky", actually jumping around while you move the volume-control sliders. Version-Release number of selected component (if applicable): # rpm -qa | grep -i alsa alsa-plugins-pulseaudio-1.0.16-4.fc9.i386 alsa-lib-devel-1.0.16-3.fc9.i386 bluez-utils-alsa-3.30-2.fc9.i386 alsa-utils-1.0.16-2.fc9.i386 alsa-lib-1.0.16-3.fc9.i386 # rpm -qa | grep -i pulseaudio pulseaudio-module-x11-0.9.10-1.fc9.i386 pulseaudio-module-gconf-0.9.10-1.fc9.i386 pulseaudio-utils-0.9.10-1.fc9.i386 xine-lib-pulseaudio-1.1.12-2.fc9.i386 pulseaudio-libs-0.9.10-1.fc9.i386 pulseaudio-0.9.10-1.fc9.i386 alsa-plugins-pulseaudio-1.0.16-4.fc9.i386 pulseaudio-libs-glib2-0.9.10-1.fc9.i386 pulseaudio-core-libs-0.9.10-1.fc9.i386 pulseaudio-esound-compat-0.9.10-1.fc9.i386 # lspci | grep -i audio 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ ICH4-L/ICH4-M) AC'97 Audio Controller (rev 02) # uname -r 2.6.25.3-18.fc9.i686 How reproducible: Always - It happens also while initializind audio at boot time Steps to Reproduce: 1. Open any audio app and play a sound Actual results: "Volume POP" + Your Sound Expected results: Your Sound without the popping Additional info: *Not* tested on any other hardware - Sorry
Sounds like a driver bug to me. If the audio output is initialized no popping sound should happen. Takashi is working on fixing the remaining issues in those drivers.