I installed the old windows EMUU_PCAppDrvFw_L6_1_30_07 which updates (in this case reverted to an older version) the firmware on the card.
The distortion characteristics on arm changed slightly, which points to a firmware issue.2016-01-28 18:14 GMT+01:00 P Z <pzkmmmh@xxxxxxxxx>:
Odd, the VU meter is animating, but no sound. A few times, aplay freezed after 1-2 seconds. Arecord also doesn't work.
bla@ubuntu:~$ aplay -D plughw:1,0 Desktop/Jamiroquai44100-24.wav -V mono -v
Playing WAVE 'Desktop/Jamiroquai44100-24.wav' : Signed 24 bit Little Endian in 3bytes, Rate 44100 Hz, Stereo
Plug PCM: Hardware PCM card 1 'E-MU 0202 | USB' device 0 subdevice 0
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S24_3LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 24
buffer_size : 22050
period_size : 5513
period_time : 125011
tstamp_mode : NONE
period_step : 1
avail_min : 5513
period_event : 0
start_threshold : 22050
stop_threshold : 22050
silence_threshold: 0
silence_size : 0
boundary : 6206523236469964800
appl_ptr : 0
hw_ptr : 0
#####+ | 08%
amixer sset 'PCM' 70%
Simple mixer control 'PCM',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 63
Mono:
Front Left: Playback 45 [71%] [33.00dB] [on]
Front Right: Playback 45 [71%] [33.00dB] [on]
amixer -c1 scontents
Simple mixer control 'PCM',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 200
Mono:
Front Left: Playback 176 [88%] [-12.00dB] [on]
Front Right: Playback 176 [88%] [-12.00dB] [on]
Simple mixer control 'Clock rate Selector',0
Capabilities: volume volume-joined
Playback channels: Mono
Capture channels: Mono
Limits: 0 - 5
Mono: 0 [0%]
bla@ubuntu:~$ amixer -c1 controls
numid=3,iface=MIXER,name='PCM Playback Switch'
numid=4,iface=MIXER,name='PCM Playback Volume'
numid=5,iface=MIXER,name='Clock rate Selector'
numid=2,iface=PCM,name='Capture Channel Map'
numid=1,iface=PCM,name='Playback Channel Map'2016-01-28 9:22 GMT+01:00 Clemens Ladisch <cladisch@xxxxxxxxxxxxxx>:P Z wrote:
> Trying to ddx on the sunxi side, judging from the test soundfile and
> given the fact that recording works, how likely is it that this is
> a power supply issue
Pretty much impossible.
> aplay -D plughw:1,0 /home/bla/Desktop/Jamiroquai44100-24.wav
So what happens?
It might be possible that some mixer controls are not set correctly.
Show the output of "amixer -c1 scontents".
Regards,
Clemens
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