[Voyage-linux] problem with Voyage MPD USB 2 Sound

[stoyan]

Hello,
First: thank you for great job developing Voyage MPD - works awesome!
I upgrade to last build of Voyage MPD and on every reboot I got
different configuration for my USB DAC - sometimes is USB 1, sometimes
is USB 2 mode.
When is in USB 2 mode everything is OK, works well.
In USB 1 mode I got error message that can't open sound device and
can't play music.
Currently installed build of Voyage MPD is
voyage-mpd/voyage-mpd-0.9-rc1.tar.bz2 on ALIX3D2 board with USB DAC
M2Tech HiFace Two and without Wi-Fi card Installed.
I'm using like music source my home NAS and mount the music directory
via NFS in fstab.

Is it possible to optimize the boot process and to define which module
or driver to load?

Here is the result from aplay -l when everything works fine:
root at voyage:/etc/modprobe.d# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: M20 [M2Tech USB Audio 2.0], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Here is the result from aplay -L when everything works fine:
root at voyage:/etc/modprobe.d# aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=M20
    M2Tech USB Audio 2.0, USB Audio
    Default Audio Device
sysdefault:CARD=M20
    M2Tech USB Audio 2.0, USB Audio
    Default Audio Device
front:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    Front speakers
surround40:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=M20,DEV=0
    M2Tech USB Audio 2.0, USB Audio
    IEC958 (S/PDIF) Digital Audio Output

Here is the result from lsmod when everything works fine:
root at voyage:/etc/modprobe.d# lsmod
Module                  Size  Used by
nfsd                  159791  2
exportfs                2442  1 nfsd
ipv6                  190776  36
ledtrig_netdev          2654  0
ledtrig_timer           1178  0
ledtrig_heartbeat        925  0
geodewdt                2035  2
hwmon_vid               1608  0
lm90                    8829  0
evdev                   6400  0
snd_usb_audio          63506  1
snd_usbmidi_lib        12562  1 snd_usb_audio
snd_hwdep               3794  1 snd_usb_audio
snd_seq_midi            3208  0
snd_seq_midi_event      3636  1 snd_seq_midi
snd_rawmidi            11818  2 snd_usbmidi_lib,snd_seq_midi
snd_pcm                47801  1 snd_usb_audio
snd_page_alloc          4833  1 snd_pcm
snd_seq                32807  2 snd_seq_midi_event,snd_seq_midi
snd_seq_device          3561  3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer              11810  2 snd_pcm,snd_seq
snd                    34735  10
snd_usb_audio,snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_seq_device
pcspkr                  1255  0
soundcore               3251  1 snd
scx200_acb              3151  0
cs5535_mfgpt            2145  1 geodewdt
geode_aes               3786  0
geode_rng                800  0
rng_core                2274  1 geode_rng
ata_generic             2239  0
pata_cs5536             2150  0
pata_amd                6684  0
libata                117623  3 pata_amd,ata_generic,pata_cs5536
ide_pci_generic         1964  0
ohci_hcd               16707  0
ehci_hcd               28673  0
usbcore                93451  5 snd_usb_audio,ohci_hcd,snd_usbmidi_lib,ehci_hcd
ssb                    32142  1 ohci_hcd
usb_common               529  1 usbcore
pcmcia                 24612  1 ssb
pcmcia_core             8381  1 pcmcia
amd74xx                 3612  1
via_rhine              15706  0
mii                     2759  1 via_rhine


info from
root at voyage:/etc/modprobe.d# cat /proc/asound/cards
 0 [M20            ]: USB-Audio - M2Tech USB Audio 2.0
                      M2Tech M2Tech USB Audio 2.0 at
usb-0000:00:0f.5-2, high speed

In "bad" configuration after reboot the info is "M2Tech USB Audio 1".
I did not found any relation between how and how often I restart the
system - just sometimes it detects USB DAC in usb 1, other time like
usb 2 device.

I did not found also such issue in internet.

Please, do you have any ideas how to fix this issue?
Is it possible to define manually what and how to load to avoid
detecting new sound card after reboot?

Best regards,

Stoyan




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