usb audio

usb audio

[bruce]

Hi I have the TASCAM US-122L USB.I am using ubuntu studio 9.04.The usb 
audio inputs and outputs are no functional cant fined them anywhere I am 
using jack connection kit on my studio the midi are recognized but not 
the audio.I have submitted to launchpad this report.Here are my jack 
start up log
this is with tascam us-122L set as input and output.It will start with 
just tascam input but there is no audio only midi with that start.

jackd 0.116.1

Copyright 2001-2005 Paul Davis and others.

jackd comes with ABSOLUTELY NO WARRANTY

This is free software, and you are welcome to redistribute it

under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.

server `default' registered

23:53:21.206 JACK was started with PID=8295.

registered builtin port type 32 bit float mono audio

registered builtin port type 8 bit raw midi

clock source = system clock via clock_gettime

start poll on 3 fd's

loading driver ..

new client: alsa_pcm, id = 1 type 1 @ 0x9821d48 fd = -1

apparent rate = 44100

creating alsa driver ... hw:1|hw:1|1024|3|44100|0|0|hwmon|hwmeter|-|32bit

control device hw:1

23:53:21.383 ALSA active patchbay scan...

23:53:21.407 jack-imput-output003: 14:0 Midi Through -> 20:0 TASCAM 
US-122L checked.

23:53:21.416 ALSA connection change.

23:53:21.811 ALSA active patchbay scan...

23:53:21.813 jack-imput-output003: 14:0 Midi Through -> 20:0 TASCAM 
US-122L checked.

ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to 
capture-only mode

cannot load driver module alsa

starting server engine shutdown

server thread back from poll

freeing shared port segments

stopping server thread

last xrun delay: 0.000 usecs

max delay reported by backend: 0.000 usecs

freeing engine shared memory

max usecs: 0.000, engine deleted

cleaning up shared memory

cleaning up files

unregistering server `default'

23:53:22.586 JACK was stopped successfully.

23:53:22.588 Post-shutdown script...

23:53:22.590 killall jackd

jackd: no process killed

23:53:23.015 Post-shutdown script terminated with exit status=256.

23:53:23.727 Could not connect to JACK server as client. - Overall 
operation failed. - Unable to connect to server. Please check the 
messages window for more info.


thank you for any help you mite give :-)   Bruce McCandless

USB audio

[Lars Brinkhoff]

I got an iSub today.  It's recognized as an USB audio device when it's
connected, and it basically works, but there are two problems:

* Whenever I kill a process (with ^C, to be precise) writing audio
  data to the iSub, that process hangs.  From then on, all processes
  opening the dsp or mixer devices also hang.  If I don't kill the
  process, suspending and resuming works fine.

* The "aumix" program (version 2.7) doesn't seem to think there is a
  volume control.

I'm running Linux 2.4.18-rc1-benh (from ppckernel.org).

--
Lars Brinkhoff          http://lars.nocrew.org/     Linux, GCC, PDP-10,
Brinkhoff Consulting    http://www.brinkhoff.se/    HTTP programming

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Re: USB audio

[benh]

>
>I got an iSub today.  It's recognized as an USB audio device when it's
>connected, and it basically works, but there are two problems:
>
>* Whenever I kill a process (with ^C, to be precise) writing audio
>  data to the iSub, that process hangs.  From then on, all processes
>  opening the dsp or mixer devices also hang.  If I don't kill the
>  process, suspending and resuming works fine.

I think I know what's wrong, I yet have write a fix though.

>* The "aumix" program (version 2.7) doesn't seem to think there is a
>  volume control.

Don't know about this one.

Ben.


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Re: USB audio

[Alban Fellows]

On Thursday 21 February 2002 3:24 pm, Lars Brinkhoff wrote:
> I got an iSub today.  It's recognized as an USB audio device when it's
> connected, and it basically works, but there are two problems:
>
> * Whenever I kill a process (with ^C, to be precise) writing audio
>   data to the iSub, that process hangs.  From then on, all processes
>   opening the dsp or mixer devices also hang.  If I don't kill the
>   process, suspending and resuming works fine.
>
> * The "aumix" program (version 2.7) doesn't seem to think there is a
>   volume control.
>
> I'm running Linux 2.4.18-rc1-benh (from ppckernel.org).

For the group's information I have had similar hanging problems with my
Roland UA-30 USB Audio Interface. The most major issue has been the fact that
because the process cannot be killed, the filesystem is in use and cannot be
unmounted, which results in a forced fsck after reboot.
This has become less of a problem since I switched to ext3 filesystems, as
they don't need fsck.

I am running 2.4.18-rc1 from the bitkeeper ppc tree.

As a side issue to this I have noticed that the console beep does not work on
the USB audio, but does on the dmasound for the builtin audio. I now have
both installed and get console beeps from the Mac and most of my other sound
from the USB.

BTW. Is there any reason why the dsp devices appear to be single open. (ie
once one program has the sound another program can hang waiting for it)

thanks

Alban.

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usb audio

[Landsberger Brian J]

	Has anyone been able to get the Apple Pro (the round clear) speakers to
work in Linux? I've read the howto's and followed the various steps to
no avail. The various usb modules print the following to syslog:


Feb 17 14:05:50 fux0r kernel: usb.c: registered new driver audio
Feb 17 14:05:51 fux0r kernel: usbaudio: device 4 audiocontrol interface
0 has 0 input and 1 output AudioStreaming interfaces
Feb 17 14:05:51 fux0r kernel: usbaudio: device 4 interface 1 altsetting
0 does not have an endpoint
Feb 17 14:05:51 fux0r kernel: usbaudio: device 4 interface 1 altsetting
1: format 0x00000010 sratelo 5000 sratehi 50000 attributes 0x00
Feb 17 14:05:51 fux0r kernel: usbaudio: device 4 interface 1 altsetting
2: format 0x80000010 sratelo 5000 sratehi 50000 attributes 0x00
Feb 17 14:05:51 fux0r kernel: usbaudio: device 4 interface 1 altsetting
3 unsupported channels 2 framesize 3
Feb 17 14:05:51 fux0r kernel: usbaudio: constructing mixer for Terminal
3 type 0x0301

Some info out of usbdevfs on the speakers...

Speakers
Manufacturer: Apple Computer, Inc.
Serial Number: p4000
Speed: 12Mb/s (full)
USB Version:  1.10
Device Class: 00(>ifc )
Device Subclass: 00
Device Protocol: 00
Maximum Default Endpoint Size: 8
Number of Configurations: 1
Vendor Id: 05ac
Product Id: 1101
Revision Number:  0.01

Config Number: 1
	Number of Interfaces: 3
	Attributes: 80
	MaxPower Needed: 500mA

	Interface Number: 0
		Name: audio
		Alternate Number: 0
		Class: 01(audio) 
		Sub Class: 1
		Protocol: 0
		Number of Endpoints: 0

	Interface Number: 1
		Name: audio
		Alternate Number: 0
		Class: 01(audio) 
		Sub Class: 2
		Protocol: 0
		Number of Endpoints: 0

	Interface Number: 1
		Name: audio
		Alternate Number: 1
		Class: 01(audio) 
		Sub Class: 2
		Protocol: 0
		Number of Endpoints: 1

			Endpoint Address: 01
			Direction: out
			Attribute: 9
			Type: Isoc
			Max Packet Size: 112
			Interval:   1ms

	Interface Number: 1
		Name: audio
		Alternate Number: 2
		Class: 01(audio) 
		Sub Class: 2
		Protocol: 0
		Number of Endpoints: 1

			Endpoint Address: 01
			Direction: out
			Attribute: 9
			Type: Isoc
			Max Packet Size: 224
			Interval:   1ms

	Interface Number: 1
		Name: audio
		Alternate Number: 3
		Class: 01(audio) 
		Sub Class: 2
		Protocol: 0
		Number of Endpoints: 1

			Endpoint Address: 01
			Direction: out
			Attribute: 9
			Type: Isoc
			Max Packet Size: 336
			Interval:   1ms

	Interface Number: 2
		Name: hid
		Alternate Number: 0
		Class: 03(HID  ) 
		Sub Class: 0
		Protocol: 0
		Number of Endpoints: 1

			Endpoint Address: 83
			Direction: in
			Attribute: 3
			Type: Int.
			Max Packet Size: 2
			Interval:   8ms

Thanks,
Brian

Re: usb audio

[Thomas Sailer]

Landsberger Brian J wrote:
> 
>         Has anyone been able to get the Apple Pro (the round clear) speakers to
> work in Linux? I've read the howto's and followed the various steps to
> no avail. The various usb modules print the following to syslog:

This looks ok. So what is wrong?

Tom

Re: usb audio

[Landsberger Brian J]

No sound comes forth from them, not even so much as a whisper.

Thomas Sailer wrote:

> Landsberger Brian J wrote:
> 
>>         Has anyone been able to get the Apple Pro (the round clear) speakers to
>> work in Linux? I've read the howto's and followed the various steps to
>> no avail. The various usb modules print the following to syslog:
> 
> 
> This looks ok. So what is wrong?
> 
> Tom