On Tue, Aug 3, 2010 at 10:38 PM, Raymond Yau &lt;superquad.vortex2(a)gmail.com&gt; wrote: I used similar code to what's in alsamixer to perform the same functions as the old broken code. Now the code behaves as follows: gnulem-238-~> envy24control -Dhw:default envy24control: invalid ALSA audio device, invalid index or name for card: hw:default gnulem-239-~> envy24control -Dhw:M66 using --- input_channels: 4 --- output_channels: 4 --- pcm_output_channels: 8 --- spdif in/out channels: 2 gnulem-240-~> envy24control -Dhw:M66.0 envy24control: invalid ALSA audio device, invalid index or name for card: hw:M66.0 gnulem-241-~> envy24control -Dhw:M66,0 envy24control: invalid ALSA audio device, invalid index or name for card: hw:M66,0 gnulem-242-~> envy24control -DM66 envy24control: ALSA audio device syntax expects ':' character: M66 Current code: while ((c = getopt_long(argc, argv, "D:c:f:i:m:Mo:p:s:w:vt:ng:", long_options, NULL)) != -1) { switch (c) { case 'D': name = optarg; if (!index(name, ':')) { fprintf(stderr, "envy24control: ALSA audio device syntax expects ':' character: %s\n", optarg); exit(1); } card_number = snd_card_get_index(strchr(name, ':') + sizeof(char)); /* NPM: use correct ALSA-specific call to fix https://bugzilla.redhat.com/show_bug.cgi?id=602900 */ if (card_number < 0) { /* NPM: code orig from alsa-utils/alsamixer/cli.c */ fprintf(stderr, "envy24control: invalid ALSA audio device, invalid index or name for card: %s\n", optarg); exit(1); } break; case 'c': card_number = snd_card_get_index(optarg); /* NPM: use correct ALSA-specific call to fix https://bugzilla.redhat.com/show_bug.cgi?id=602900 */ if (card_number < 0) { /* NPM: code orig from alsa-utils/alsamixer/cli.c */ fprintf(stderr, "envy24control: invalid ALSA index or name for audio card: %s\n", optarg); exit(1); } sprintf(tmpname, "hw:%d", card_number); name = tmpname; break; -- Niels http://nielsmayer.com