On 28/06/10 23:18, nev young wrote:
On 28/06/10 21:22, Chris G wrote:
I never seem to be able to get sound apps working quickly/easily in Linux (or WIndows for that matter). Is it really such a black art.
.... but there's no sound, which is rather fundamental for a phone application! And there's no way to diagnose it at all, no simple tests to play a sound, nothing, nada. How is one meant to configure and test sound setup on Linux (Ubuntu 10.04 in this case) with no simple tests to try out.
Have you tried: System -> Administration -> System Testing. It has sound tests.
Also for testing input you can use the System, Preferences, Sound control panel as that has a simple bargraph that indicates input levels.
One issue you might be having is that looking at that list of available sound devices there is no provision for the Pulseaudio sound sync and source which is what most of the default appliactions are using now. Pulse is there to provide transparent and concurrent access to the sound devices (in reality it mostly seems to cause more problems than it solves) But the issue remains that sometimes if you attach to the ALSA devices directly it will steal the sound away from Pulse or vice versa. Before you try again make sure that again in the Sound preferences window under applications there are no applications currently using the sound devices or you may find they are unavailable to anything else not using Pulse.
Also the volume applet on the taskbar is simplistic so you might want to fire up Pulse Audio Volume control which should be in Applications, Sound and Video. Then there is alsamixer which will adjust the raw levels Pulse isn't aware of.
Put simply it is a bit of a mess with a multitude of subsystems some of which may not be relevant to your application....have fun