Re: [alsa-devel] underrun observed when aplay is used with mmap

Pharaoh . wrote:

Finally I have got my driver working and now testing it using aplay. I am able to play a song without getting any underruns when I use read/write mode but when I use mmapped mode I get underrun warnings. After this if I use read/write mode again then I observe 1 warning of underrun. Any idea what could be wrong?

You forgot the link to the source code.

Regards, Clemens