Hello,
I am running alsa 1.2.8 in Debian stable with a recent kernel from backports
root@mo:~# uname -a
Linux mo 6.10.6+bpo-armmp #1 SMP Debian 6.10.6-1~bpo12+1 (2024-08-26) armv7l
GNU/Linux
root@mo:~#
on a Hummingboard (with an NXP iMX.6 SoC with ARM processor cores)
aplay throws a "Channels count non available" message when using the dmix
device, with the hw device everything works.
Can anybody tell what I am doing wrong?
Here are the aplay outputs:
root@mo:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
lavrate
Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
Rate Converter Plugin Using Samplerate Library
speexrate
Rate Converter Plugin Using Speex Resampler
jack
JACK Audio Connection Kit
oss
Open Sound System
pulse
PulseAudio Sound Server
speex
Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
Plugin for channel upmix (4,6,8)
vdownmix
Plugin for channel downmix (stereo) with a simple spacialization
hw:CARD=Codec,DEV=0
On-board Codec, 2028000.ssi-sgtl5000 sgtl5000-0
Direct hardware device without any conversions
plughw:CARD=Codec,DEV=0
On-board Codec, 2028000.ssi-sgtl5000 sgtl5000-0
Hardware device with all software conversions
default:CARD=Codec
On-board Codec, 2028000.ssi-sgtl5000 sgtl5000-0
Default Audio Device
sysdefault:CARD=Codec
On-board Codec, 2028000.ssi-sgtl5000 sgtl5000-0
Default Audio Device
dmix:CARD=Codec,DEV=0
On-board Codec, 2028000.ssi-sgtl5000 sgtl5000-0
Direct sample mixing device
usbstream:CARD=Codec
On-board Codec
USB Stream Output
hw:CARD=SPDIF,DEV=0
On-board SPDIF, S/PDIF PCM snd-soc-dummy-dai-0
Direct hardware device without any conversions
plughw:CARD=SPDIF,DEV=0
On-board SPDIF, S/PDIF PCM snd-soc-dummy-dai-0
Hardware device with all software conversions
default:CARD=SPDIF
On-board SPDIF, S/PDIF PCM snd-soc-dummy-dai-0
Default Audio Device
sysdefault:CARD=SPDIF
On-board SPDIF, S/PDIF PCM snd-soc-dummy-dai-0
Default Audio Device
dmix:CARD=SPDIF,DEV=0
On-board SPDIF, S/PDIF PCM snd-soc-dummy-dai-0
Direct sample mixing device
usbstream:CARD=SPDIF
On-board SPDIF
USB Stream Output
hw:CARD=DWHDMI,DEV=0
DW-HDMI, dw-hdmi-ahb-audio
Direct hardware device without any conversions
plughw:CARD=DWHDMI,DEV=0
DW-HDMI, dw-hdmi-ahb-audio
Hardware device with all software conversions
default:CARD=DWHDMI
DW-HDMI, dw-hdmi-ahb-audio
Default Audio Device
sysdefault:CARD=DWHDMI
DW-HDMI, dw-hdmi-ahb-audio
Default Audio Device
dmix:CARD=DWHDMI,DEV=0
DW-HDMI, dw-hdmi-ahb-audio
Direct sample mixing device
usbstream:CARD=DWHDMI
DW-HDMI
USB Stream Output
root@mo:~# aplay --device="dmix:CARD=Codec,DEV=0" /usr/share/sounds/alsa/
Noise.wav
Playing WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian,
Rate 48000 Hz, Mono
aplay: set_params:1358: Channels count non available
root@mo:~# aplay --device="hw:CARD=Codec,DEV=0" /usr/share/sounds/alsa/
Noise.wav
Playing WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian,
Rate 48000 Hz, Mono
root@mo:~#
Any hint or idea is welcome.
Many thanks
Rainer
--
Rainer Dorsch
http://bokomoko.de/
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