Recommended Brand of USB Sound adapters?

[ezjam]

Hi,

I'll get the info tonight. In the mean time, I have the PogoPlug Pro P01. I used this http://Arch Linux ARM.com/index.php5/Install_on_Pogoplug_Pro for installation. But I'll get more specifics tonight.

[WarheadsSE]

Likely answer.. it's not in the kernel...

[ezjam]

uname -a

Linux (none) 2.6.31.6_SMP_820 #99 SMP Sun May 29 03:04:43 EDT 2011 armv6l ARMv6-compatible processor rev 5 (v6l) Oxsemi NAS GNU/Linux

Here is where the driver is located...

/lib/modules/2.6.38/kernel/sound/usb/snd-usb-audio.ko.gz

When I attempt to load it, this is what I get. I am probably loading it incorrectly though.

[root@(none) ~]# insmod /lib/modules/2.6.38/kernel/sound/usb/snd-usb-audio.ko.gz
insmod: error inserting '/lib/modules/2.6.38/kernel/sound/usb/snd-usb-audio.ko.gz': -1 Invalid module format

I've tried loading it by name only with failing results as well.

So, how does one load a ko.gz driver? And better yet, how do I have the driver loaded (and utilized with card) when I insert a usb sound card?

Thanx in advance...

ezjam

[ezjam]

BTW: I tried gunzip'ing the file before insmod'ing it. Same result. I am now going to download the file (maybe my copy is corrupted) and try again.

[pepedog]

modprobe snd-usb-audio
I still have libs from my older kernel, strange
[root@PBLinux ~]# locate snd-usb-audio
/lib/modules/2.6.38/kernel/sound/usb/snd-usb-audio.ko.gz
/lib/modules/2.6.38.3/kernel/sound/usb/snd-usb-audio.ko

I peeked into my /lib/modules/2.6.38.3/modules.usbmap and /lib/modules/2.6.38.3/modules.alias which I believe is where the product and vendor info ties to which driver, then driver in most cases just loads, some soundcards will also require extra info in /etc/modprobe.d/modprobe.conf to work properly, and maybe something in /etc/asound.conf, but you haven't got to those stages (no module loaded).

I have hacked kernel source to get a video card working, a new card had different product id so put it in the alias of the kernel source and compiled, in your case that would be
linux-2.6.38.3/sound/usb/snd-usb-audio.mod.c
or whatever kernel source you have.
But you can't do any of that, you got an Oxsemi NAS and only WarheadsSE can compile.
Plus it might take a few attempts

Then again, WarheadsSE maybe right, I am just a (sometimes lucky) dabbler, he is a professional

BUT, go to the ver last post here
http://forums.gentoo.org/viewtopic-t-501671.html
This looks like a possible solution? I have never tried this sort of thing, one thing wrong is any file in /etc/modprobe.d must end in .conf
Also reboot befor you try

[maxim]

Hi!

I have a similar problem as ezjam with my TerraTec Aureon Dual USB and my pink v2.

When I try to play a song from mpd, it gets paused directly. And I noticed that I can't set the volume. cmut don't work either. But I get sound from mpg123 and espeak. The mpg123 sound is really bad with crackles, though.

Would it maybe be better to use jack2 instead of jack?

I also tryed it on my Ubuntu 10.10 and it worked out of the box. And I noticed some differences in dmesg.

Plug dmesg:

[6815959.933566] usb 1-1.2: new full speed USB device using orion-ehci and address 9
[6815960.054057] input: C-Media Electronics Inc. USB PnP Sound Device as /devices/platform/orion-ehci.0/usb1/1-1/1-1.2/1-1.2:1.3/input/input0
[6815960.054462] generic-usb 0003:0CCD:0077.0001: input: USB HID v1.00 Device [C-Media Electronics Inc. USB PnP Sound Device] on usb-orion-ehci.0-1.2/input3

Ubuntu dmesg:

[33507.316107] usb 5-1: new full speed USB device using uhci_hcd and address 6
[33507.686585] usbcore: registered new interface driver hiddev
[33507.691696] input: C-Media Electronics Inc. USB PnP Sound Device as /devices/pci0000:00/0000:00:1d.3/usb5/5-1/5-1:1.3/input/input9
[33507.692620] generic-usb 0003:0CCD:0077.0001: input,hidraw0: USB HID v1.00 Device [C-Media Electronics Inc. USB PnP Sound Device] on usb-0000:00:1d.3-1/input3
[33507.694532] usbcore: registered new interface driver usbhid
[33507.694539] usbhid: USB HID core driver
[33507.819853] usbcore: registered new interface driver snd-usb-audio

Seems that Ubuntu loads three drivers, but on the plug it don't give me any driver message at all..

I almost have the same MPD output as ezjam, with the same following line:

output: Failed to open "My ALSA Device" [alsa]: Failed to open ALSA device "default": No such file or directory

But when I connect to mpd and pressing start i get:

ALSA lib confmisc.c:768:(parse_card) cannot find card '0'
ALSA lib conf.c:4184:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4184:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:4184:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4663:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM default
output: Failed to open "My ALSA Device" [alsa]: Failed to open ALSA device "default": No such file or directory
player_thread: problems opening audio device while playing "03 - anger management.mp3"

Here's different output I got from my plug:

lsusb:

Bus 001 Device 006: ID 0ccd:0077 TerraTec Electronic GmbH Aureon Dual USB

aplay -l:

**** List of PLAYBACK Hardware Devices ****
card 0: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

cmus:

ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libalsa.so => dlopen() failed
ERROR: Failed to load plugin /usr/lib/ao/plugins-4/libesd.so => dlopen() failed

lsmod:

Module Size Used by
ipv6 236407 14
snd_usb_audio 67136 0
fuse 57987 2
snd_pcm 58789 1 snd_usb_audio
snd_timer 16555 1 snd_pcm
snd_page_alloc 4547 1 snd_pcm
snd_hwdep 4749 1 snd_usb_audio
snd_usbmidi_lib 15319 1 snd_usb_audio
snd_rawmidi 15609 1 snd_usbmidi_lib
snd_seq_device 4702 1 snd_rawmidi
snd 34176 7 snd_usb_audio,snd_pcm,snd_timer,snd_hwdep,snd_usbmidi_lib,snd_rawmidi,snd_seq_device
soundcore 694 1 snd
mv_cesa 8951 0

Does this mean that snd_usb_audio is loaded? But it says "Used by 0", don't know what that means..

Plug uname -a:

Linux Arch Linux ARM install 2.6.38 #1 PREEMPT Tue May 17 00:39:39 MDT 2011 armv5tel Feroceon 88FR131 rev 1 (v5l) Marvell SheevaPlug Reference Board GNU/Linux

Ubuntu uname -a:

Linux maxim 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 19:00:26 UTC 2011 i686 GNU/Linux

Ok, that's was alot of output . Anybody have any idea what the problem could be?

[crimsonredmk]

Offtopic, I don't have any experience with USB sound, but pacman -Syu and then pacman -Sy net-tools to get your hostname binary back if you're still missing it. It'll fix the username@(none) error.

[devr]

I have a similar issue. But everything looks to load right. modules load. alsamixer shows a card as does aplay -l. Just seems some programs look for /dev/mixer* or some form of mixer.. and seems I am missing that.. any suggestions ?

[xoxox]

I'm using this one from Amazon Germany http://www.amazon.de/gp/product/B003TYI ... ss_product
Works with my Sheevaplug and Alsa after creating /etc/asound.conf with the previously mentioned content:

Code: Select all

pcm.!default {
        type hw
        card 0
}

ctl.!default {
        type hw           
        card 0
}

It supports 44 and 48kHz, works flawlessly with shairport.

[dockstreet]

I highly recommend using PulseAudio vs direct hw Alsa in the asound.conf - some programs wouldn't work with the asound.conf with the "type hw" for "pcm"; I use "type pulse"

tips - that worked for me:

1. pacman -S pulseaudio-alsa

2. "you may add auth-anonymous=1 to the end of the load-module module-native-protocol-tcp line to disable authentication"

3. Use the "trivial" sampler vs "spex" to save cpu

4. write your own "pulseaudio" rc.d file i.e. pulseaudio --start -D --exit-idle-time=-1

5. increase sample / frequency to 48000

6. important have the daemon.conf to set exit-idle-time to -1

https://wiki.archlinux.org/index.php/PulseAudio
http://mpd.wikia.com/wiki/PulseAudio
https://bbs.archlinux.org/viewtopic.php?id=115292

watch out for consolekit if you have dbus running - you may have to remove it from /usr/share/dbus-1/system-services
same thing goes for policykit1 - make a back up of both - dbus will still run with them removed

Good luck!