You're right, I've mixed up those two. The annoying part is it doesn't seems to work even for root. What about the options ? I was trying to set tsched_buffer_watermark=48 in system.pa, but load-module for the sink didn't work even when I tried it without any options. BTW, I'm often getting: [pulseaudio] alsa-util.c: snd_pcm_avail_update() returned a valu e that is exceptionally large: 229216 bytes (1193 ms) Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers. 00:06.0 Multimedia audio controller: nVidia Corporation nForce2 AC97 Audio Controler (MCP) (rev a1) Subsystem: EPoX Computer Co., Ltd. Device 1001 Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21 I/O ports at d000 [size=256] I/O ports at d400 [size=128] Memory at ea001000 (32-bit, non-prefetchable) [size=4K] Capabilities: [44] Power Management version 2 Kernel driver in use: Intel ICH Kernel modules: snd-intel8x0 Forgot to add last time, CC me.