Thanks for answer #23, it solved my problem. The problem occured only by VLC itself and the KDE Phonon VLC module. So I suspect that VLC is doing something a little bit different than most other audio backends. Maybe the chunk size VLC uses or the timing of VLC.
Also I followed https://wiki.archlinux.org/index.php/PulseAudio#Choppy.2C_overdriven_sound (set samplerate to 48000 Hz) and https://wiki.archlinux.org/index.php/PulseAudio#Setting_the_default_fragment_number_and_buffer_size_in_Pulseaudio (Set correct buffer and fragment size for 48000 Hz). This alone without answer #23 was not enough, but I guess they are worthwhile anyway. $ lspci | grep -i audio 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40) 01:05.1 Audio device: Advanced Micro Devices [AMD] nee ATI RS880 HDMI Audio [Radeon HD 4200 Series] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/751265 Title: pulseaudio distorts VLC audio To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/751265/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
