I hava ALSA lib Error and Youtube on Firefox issue

[abdyek]

This is alsa lib errors before loading my spotify account library:

ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card connect(2) call to /dev/shm/jack-1000/default/jack_0 failed (err=No such file or directory) attempt to connect to server failed

But errors aren't a problem for me because it isn't cause to play music.

I have another problem. Sconsify break my youtube on firefox when sconsify run.

[fabiofalci]

It looks like you are using ALSA directly, and ALSA can only handle one application at a time. I heard there is an ALSA module called dmix where you can enable multiple applications but I don't know much about it so I can't advise on that.

I have PulseAudio installed on my machine and that can handle multiple applications at the same time.

[abdyek]

Thank you for the information. I won't try to make playable multiple app. I wanted to check it. :+1: