At Mon, 4 Apr 2011 11:54:45 +0800, Raymond Yau wrote: > > it seem that the value return by snd_pcm_hw_params_get_buffer_size_max() > depend on /proc/asound/Intel/pcm0p/sub0/prealloc > > Is it a bug in alsa-lib or snd-hda-intel driver No bug. This is the designed behavior. Takashi