Please add the pcm_multi patch to alsa-lib. This patch is needed in order to get two soundcards to work simultaneously with jackd. I have tried it and it works. Thanks. Here is the patch: <cut here>-------------------------------- --- alsa-lib/src/pcm/pcm_multi.c 2005-12-03 20:10:58.000000000 +0000 +++ alsa-lib/src/pcm/pcm_multi.c 2005-12-03 20:20:56.000000000 +0000 @@ -597,7 +597,7 @@ static int snd_pcm_multi_resume(snd_pcm_ return err; } -static int snd_pcm_multi_link_fd_failed(snd_pcm_t *pcm, int fd) +/* static int snd_pcm_multi_link_fd_failed(snd_pcm_t *pcm, int fd) { snd_pcm_multi_t *multi = pcm->private_data; unsigned int i; @@ -638,7 +638,7 @@ static int snd_pcm_multi_unlink(snd_pcm_ multi->slaves[i].linked = 0; } return 0; -} +} */ static snd_pcm_sframes_t snd_pcm_multi_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, @@ -726,9 +726,9 @@ static snd_pcm_fast_ops_t snd_pcm_multi_ .rewind = snd_pcm_multi_rewind, .forward = snd_pcm_multi_forward, .resume = snd_pcm_multi_resume, - .link_fd = snd_pcm_multi_link_fd, +// .link_fd = snd_pcm_multi_link_fd, .link = snd_pcm_generic_link2, - .unlink = snd_pcm_multi_unlink, +// .unlink = snd_pcm_multi_unlink, .avail_update = snd_pcm_multi_avail_update, .mmap_commit = snd_pcm_multi_mmap_commit, .poll_descriptors_count = snd_pcm_multi_poll_descriptors_count, <end>--------------------------------------------------------------
Well, not sure about the *needing* of it, besides the patch sounds like a nasty hack to me (comment out functions is no-no). Please just get ALSA upstream to fix this.
