[Voyage-linux] QB9 and some earlier silly questions of mine

Wed, 04 May 2011 09:09:41 -0700 


First, about my first posting to this list:
Thanks to Frank for reminding me to do an apt-get update to initialize the database. I found the init script (voyage-util) which sets the root directory to ro; I was grepping for a string which did not have the caps right :-<.
Most importantly, I discovered that whether the QB9 works or not with its USB2.0 setting is very dependent on sequencing. For me, on two machines running voyage, if you power up the QB9 with the USB connected, it does NOT work; one gets the ubiquitous 

ALSA clock.c:227: 4:1:1: cannot get frequency at ep 0x1

and the display immediately comes up "96", and it will not play
anything.

If, on the other hand, you plug in the USB with voyage running and
the QB9 powered and running, it works fine. I will keep you posted
on further developments. One of the machines, a mini-itx with
a Zotac M880G motherboard, is running 7.0; the other, an old
VIA C7 mini-itx, is running the slightly more recent current version
I downloaded a couple of days ago; I do not think there are significant
changes from 7.0, but Punky could comment.

I have had nutty troubles with mpd building the database from scratch;
the music on both machines is on a local disk, and I just make a symlink
called music in /var/lib/mpd to a directory which contains symlinks to
the real music directories, organized one directory per album, roughly.
It always takes several restarts and various combinations of deleting
tag_cache, etc, before the database finally magically appears, and I
have no real idea of what I did which finally made it happen. I wish
to hell that mpd --create-db had not gone away; it always seemed to work.


--jim gunn


On Wed, 4 May 2011, [email protected] wrote:


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Today's Topics:

  1. Out of Office reply ([email protected])
  2. Re: Re: voyage-mpd and Ayre QB9 (Frank L?beck)
  3. Re: Re: voyage-mpd and Ayre QB9 (Frank L?beck)
  4. RE: Re: voyage-mpd and Ayre QB9 (Demian Martin)
  5. Re: Re: voyage-mpd and Ayre QB9 (Nick L.)
  6. RE: Re: voyage-mpd and Ayre QB9 (Demian Martin)


----------------------------------------------------------------------

Message: 1
Date: 4 May 2011 00:58:13 +0200
From: [email protected]
Subject: [Voyage-linux] Out of Office reply
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"

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Message: 2
Date: Wed, 04 May 2011 02:49:38 +0200
From: Frank L?beck <[email protected]>
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9
To: Punky Tse <[email protected]>
Cc: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii

On Wed, May 04, 2011 at 02:50:59AM +0800, Punky Tse wrote:

Hi all,

I follow this issue these days since it is not only one user having
problem.  Today, I have contacted Ayre's Hong Kong distributor for
Ayre technical contact but I am still waiting for their replies.
Right now, I have updated voyage mpd page (linux.voyage.hk/mpd) for
NOT RECOMMEDING Ayre DB9 to use with Voyage MPD until issue is
resolved.


Hi Punky,

This seems reasonable to me. I now got another "hold"-message from Ayre,
they want to investigate the problem, in particular since now several
customers have complained about the problem!

Since someone mentioned success with voyage+QB-9 in class 2 mode:
Unfortunately didn't work for me. I have tested current voyage-mpd,
new and old Ubuntu, Fedora 14, and the QB-9 both, in class 1 and class 2
mode, but always the same result.

I have now a solution for me using the Alix board and OpenBSD with a patched
kernel (also didn't work out of the box). This only has a USB audio class 1
driver, but it is a very clean and slim system with a simple audio interface,
very good sound from the QB-9.
(So, I'm happy to throw away my instable Win XP.)

Nevertheless, I'm looking forward to test the Linux drivers after a solution
to the problem was found.

Best regards,
  Frank




------------------------------

Message: 3
Date: Wed, 04 May 2011 03:11:02 +0200
From: Frank L?beck <[email protected]>
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9
To: Demian Martin <[email protected]>
Cc: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii

On Mon, May 02, 2011 at 03:13:48PM -0700, Demian Martin wrote:

We have had good success with Voyage Linux, the latest Alsa (1.0.23 &
1.0.24) and The Wavelink from Wavelength that uses the same code for the USB
interface. Here is the specific section of MPD (again latest) that we use:

audio_output {
       type          "alsa"
       name          "USB"
       device        "hw:1"    # optional
       mixer_device  "hw:1"        # optional
       mixer_control "PCM"         # optional
       mixer_index   "0"           # optional
}

This bypasses any other setup configs in the system and you may need to
figure out the ID of the usb device, use aplay -l to identify it. This has
worked well with any of the USB devices we have tried, however there are
very few UAC2 devices in the world that do not use Gordon Rankin's code.
Those that do I have been unable to get for testing yet.
      Demian
      Auraliti


I have tried that, but it didn't work. The problem seems to be that the
device it not correctly initialised.
My guess is that this is a small problem for someone who knows the technical
details. But I'm still not sure if the error is in (the firmware of) the
device or in the Linux USB subsystem (or maybe the Linux USB audio drivers).

Frank



------------------------------

Message: 4
Date: Tue, 3 May 2011 18:47:28 -0700
From: "Demian Martin" <[email protected]>
Subject: RE: [Voyage-linux] Re: voyage-mpd and Ayre QB9
To: " 'Frank L?beck' " <[email protected]>
Cc: [email protected]
Message-ID: <036001cc09fd$3a8ae9e0$afa0bda0$@com>
Content-Type: text/plain;       charset="iso-8859-1"

My guess is that Ayre made some changes in the driver that may have effected
its operation with the current Linux code. We have tested the 1.0.23 and
1.0.24 code with the latest firmware from Gordon at Wavelength. The Ayre
firmware should be very similar. You may want to try the earlier 1.0.23
version of Alsa to see if it works any better. It?s a pain to setup, compile
and install the whole suite. You may only need to install the driver and
libs since the other stuff should work with either. To keep it simple and
quick just compile the USB audio drivers.

The only significant changes in .23 to .24 are:
ALSA: usb-audio: parse clock topology of UAC2 devices
(Possibly the descriptors in the Ayre don't match here?)

.23 is where the USB audio class 2 stuff was introduced.
           -Demian

-----Original Message-----
From: Frank L?beck [mailto:[email protected]]
Sent: Tuesday, May 03, 2011 6:11 PM
To: Demian Martin
Cc: [email protected]
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9

On Mon, May 02, 2011 at 03:13:48PM -0700, Demian Martin wrote:

We have had good success with Voyage Linux, the latest Alsa (1.0.23 &
1.0.24) and The Wavelink from Wavelength that uses the same code for the

USB

interface. Here is the specific section of MPD (again latest) that we use:

audio_output {
       type          "alsa"
       name          "USB"
       device        "hw:1"    # optional
       mixer_device  "hw:1"        # optional
       mixer_control "PCM"         # optional
       mixer_index   "0"           # optional
}

This bypasses any other setup configs in the system and you may need to
figure out the ID of the usb device, use aplay -l to identify it. This has
worked well with any of the USB devices we have tried, however there are
very few UAC2 devices in the world that do not use Gordon Rankin's code.
Those that do I have been unable to get for testing yet.
      Demian
      Auraliti


I have tried that, but it didn't work. The problem seems to be that the
device it not correctly initialised.
My guess is that this is a small problem for someone who knows the technical
details. But I'm still not sure if the error is in (the firmware of) the
device or in the Linux USB subsystem (or maybe the Linux USB audio drivers).

Frank




------------------------------

Message: 5
Date: Tue, 3 May 2011 22:50:05 -0400
From: "Nick L." <[email protected]>
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9
To: Demian Martin <[email protected]>
Cc: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1

On Mon, May 2, 2011 at 6:13 PM, Demian Martin <[email protected]> wrote:

We have had good success with Voyage Linux, the latest Alsa (1.0.23 &
1.0.24) and The Wavelink from Wavelength that uses the same code for the USB
interface. Here is the specific section of MPD (again latest) that we use:

audio_output {
? ? ? type ? ? ? ? ?"alsa"
? ? ? name ? ? ? ? ?"USB"
? ? ? device ? ? ? ?"hw:1" ? ?# optional
? ? ? mixer_device ?"hw:1" ? ? ? ?# optional
? ? ? mixer_control "PCM" ? ? ? ? # optional
? ? ? mixer_index ? "0" ? ? ? ? ? # optional
}

This bypasses any other setup configs in the system...



Demian,

What's the advantage to including mixer_device, mixer_control and
mixer_index in the configuration?



------------------------------

Message: 6
Date: Tue, 3 May 2011 20:20:25 -0700
From: "Demian Martin" <[email protected]>
Subject: RE: [Voyage-linux] Re: voyage-mpd and Ayre QB9
To: "'Nick L.'" <[email protected]>
Cc: [email protected]
Message-ID: <036f01cc0a0a$35db3190$a19194b0$@com>
Content-Type: text/plain;       charset="iso-8859-1"

Nick:
Some uSB devices like the Wavelength proton have volume controls that are
controlled through the USB interfaces. In the Proton the control is on the
analog side.
     -Demian

-----Original Message-----
From: Nick L. [mailto:[email protected]]
Sent: Tuesday, May 03, 2011 7:50 PM
To: Demian Martin
Cc: [email protected]
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9

On Mon, May 2, 2011 at 6:13 PM, Demian Martin <[email protected]> wrote:

We have had good success with Voyage Linux, the latest Alsa (1.0.23 &
1.0.24) and The Wavelink from Wavelength that uses the same code for the

USB

interface. Here is the specific section of MPD (again latest) that we use:

audio_output {
? ? ? type ? ? ? ? ?"alsa"
? ? ? name ? ? ? ? ?"USB"
? ? ? device ? ? ? ?"hw:1" ? ?# optional
? ? ? mixer_device ?"hw:1" ? ? ? ?# optional
? ? ? mixer_control "PCM" ? ? ? ? # optional
? ? ? mixer_index ? "0" ? ? ? ? ? # optional
}

This bypasses any other setup configs in the system...



Demian,

What's the advantage to including mixer_device, mixer_control and
mixer_index in the configuration?




------------------------------

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