On 15/07/2014 8:41 PM, Clemens Ladisch wrote: > Bruce wrote: >> I’m having difficulty getting more than 4 playback channels to work >> using alsa callbacks and direct memory write. > Does it work with aplay? I know internally aplay uses a polled write, but yes, a good idea to try anyway; I'll see if I can do this. Have to look into aplay options to move it away from default output channels, and maybe just test 2 channels on channels 5 & 6, perhaps. >> The 1st 4 channels work OK if I use slot ID 1, but 5th and higher do >> not. Also strange pulsing noises appear on other channels (eg 31,32). > This sounds like a wrong mixer configuration (if the card has any), or > a driver bug. No mixer. Rather hoping someone won't come up and say 'use a more recent alsa', as this definitely won't work; aplay doesn't work even on default channels. This later alsa may be a weirdo pulseaudio issue (I've tried disabling pulseaudio fully) but have yet to get to the bottom of it. Trying to get arch linux to boot, in order to avoid pulseaudio. -- Cheers, Bruce ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
