I initially tried to send this yesterday from my work e-mail, but I think they may be blocking the list for some reason. Apologies if this question shows up twice.

I am attempting to upgrade from Ubuntu version 10.04 to version 12.04. Version 10.04 has ALSA version 1.0.22 and version 12.04 has ALSA 1.0.25. I have a simple test application that captures microphone input and then plays the audio through the speaker. When run with ALSA 1.0.22 the program works as expected. When I run the program with ALSA 1.0.25, I get a bad pipe error indicating buffer underrun when calling writes. Both systems have the same hardware (Dell Latitude E6400 laptop).

I tried looking through the change logs to determine if there were any obvious changes that stood out to me, but couldn't find anything. I have attached my code. Any suggestions?

Program is compiled using "g++ audio_test.cpp -o audio_test -lasound"

Audio sample rate: 8000 Buffer size: 1800 Format: Signed 16bit LE, interleaved