01.10.2010 15:32, Jaroslav Kysela wrote:

I tried to fix this issue in this commit:

http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=0244370be695372a0...

Could you confirm?

No, not confirming the fix. Still the same. Is there anything I can do to help with debugging?

01.10.2010 16:08, Jaroslav Kysela wrote:

This patch should definitely fix it:

http://git.alsa-project.org/?p=alsa-lib.git;a=commitdiff;h=c049d48407ff0459f...

Much better now, thanks! I still have an issue though. If the device registers only the playback substreams and no record substreams, it is still not listed. To reproduce, set the "/capture_count" param of /*snd_pcm_new() *to 0 in dummy.c, and then it disappears from the list, as follows: --- aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 2: STx7109 [STx7109 audio subsystem], device 0: [PCM player #0 (HDMI)] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: STx7109 [STx7109 audio subsystem], device 1: [PCM player #1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: STx7109 [STx7109 audio subsystem], device 2: [SPDIF player (HDMI)] Subdevices: 1/1 Subdevice #0: subdevice #0

$ aplay -L null Discard all samples (playback) or generate zero samples (capture) ---

Here you can see also the STx7109 driver, which is not yet in an alsa tree, having the same problem. Could you please fix also this?

01.10.2010 17:14, Jaroslav Kysela wrote:

Try upgrade alsa-utils (aplay). Appearenly, the bug is there (at least on my system the latest aplay lists devices correctly, but aplay 1.0.18 is buggy).

Many thanks, now it works! One thing to note is that previously also VirMIDI device was listed, and not any more. But I guess this is intentional, as it is not a PCM device. I needed the attached patch to compile alsa-utils. I am cross-compiling, and without this change, the configure would pick up the host's ncurses-config.

Thanks for your help.

On Fri, 1 Oct 2010, Stas Sergeev wrote:

Sorry for bothering you again, but I think even now it is not all that good. :)

---

$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Dummy [Dummy], device 0: Dummy PCM [Dummy PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 2: STx7100 [STx7109 audio subsystem], device 0: [PCM player #0 (HDMI)] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: STx7100 [STx7109 audio subsystem], device 1: [PCM player #1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 2: STx7100 [STx7109 audio subsystem], device 2: [SPDIF player (HDMI)] Subdevices: 1/1 Subdevice #0: subdevice #0

$ aplay -L null Discard all samples (playback) or generate zero samples (capture) default:CARD=Dummy Dummy, Dummy PCM Default Audio Device default:CARD=STx7100 STx7109 audio subsystem, PCM player #0 (HDMI) Default Audio Device

The Dummy and STx7109 devices does not have appropriate configuration files in /usr/share/alsa/cards tree and namehint does not list hw: like devices by default. Use "defaults.namehint.showall=1" in your configuration file (~/.asoundrc).

Jaroslav

----- Jaroslav Kysela perex@perex.cz Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc.