On Wed, May 13, 2015 at 7:27 AM, Alexandre Ratchov <a...@caoua.org> wrote: > Does "cat /dev/audio0 >/tmp/foo" works (produces non-zero length > file)?
No. However, the type of error depends on what state the system is in (before or after aucat has been tried). Immediately after reboot: $ cat /dev/audio0 > /tmp/foo cat: /dev/audio0: Device not configured $ cat /dev/urandom > /dev/audio # Results in the expected noise played on the speakers. ^C $ aucat -i test.wav # No sound, it just hangs. ^C^C After the 'aucat' invocation the system appears to be in a different state: $ cat /dev/audio0 >/tmp/foo # Different error message: cat: /dev/audio0: Device busy $ cat /dev/urandom > /dev/audio # No noise this time. -bash: /dev/audio: Device busy $ fuser /dev/audio* /dev/audioctl2: /dev/audioctl1: /dev/audioctl0: /dev/audioctl: /dev/audio2: /dev/audio1: /dev/audio0: 31156 /dev/audio: 31156 $ ps ax | grep 31156 31156 ?? I<s 0:00.01 /usr/bin/sndiod 18289 p4 R+ 0:00.00 grep 31156 This sequence is perfectly reproducible (after rebooting). > Do you have a "disable the microphone" feature in the BIOS? maybe > in some "security" section? There is only one setting to enable/disable the audio device and it is enabled. (I searched the menus exhaustively, including the security section.) In case it matters, the machine is a GB-BXi7-4770R.
