Feb 9 09:49:50 laptop-i pulseaudio[3227]: module-alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write! Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.
Then this might help: Bug 471941. It doesn't fix the root of the problem, but at least it gets rid of the logspam.
