On Tuesday 19 May 2015 13:01, Takashi Iwai wrote:
At Fri, 1 May 2015 08:36:47 +0100, Alan Horstmann wrote:
A minimal self-contained demo program ('test-format') has been developed and is attached, that demonstrates the issue 100% on the reporters machine (HDA-Intel, 6-ch I believe). The output is:
root@Xeon:/home/patest# ./test-format Testing device front Num channels 6 Testing rate: 22050 Result:...Invalid Sample Rate Testing rate: 32000 Result:...Invalid Sample Rate test-format: pcm_params.c:2249: snd1_pcm_hw_params_slave: Assertion `err
= 0' failed.
Testing rate: 44100 Aborted
Alsa-info is at:
http://www.alsa-project.org/db/?f=19dfeee29f73007e61a00a8fabe3c958f7cb8e8 7
This apparently happens with or without Pulseaudio running, with just the single 44100 rate, and also with surround devices. Also, on all current Debian and Ubuntu - we have focused on Jessie.
I do not have a machine with similar hardware, so cannot duplicate the results.
Any comments, ideas etc would be appreciated.
I also can't reproduce this. So this must be pretty specific to the setup.
Could you give the exact condition to trigger the problem? Also, this happens certainly with the latest alsa-lib?
Thanks for taking a look. Just compiling and running that test program, on the reporter's machine, which has some sort of multi-channel HDA-Intel, is 100% reproducible. The Alsa-lib must be the one provided by Debian Jessie (which was released 25.4.2015); 1.0.28 I think. Does the Alsa-info give enough details - I can ask any specific questions.
However, Raymond seems to have some ideas of a possible cause, in connection with arbitrary period size and softvol; is that plausible?
Regards
Alan