7 Apr
2007
7 Apr
'07
7:23 a.m.
Hi,
I am trying to get some older equipment to work with Linux.
Specifically an ADAT blackface and a RME DIGI 32/8 card. Is this
possible?
My problem is that the red error led on my card does not stop
glowing when I attach the digital out from my ADAT to the digital in
on the soundcard. Drivers appears to be recognised and I can chose
between different input methods in GNOMES mixer applet. I have heard
that I need to send some audio from the computer before the ADAT
sends a valid clock signal, but how can I do that when the card
refuses to work without a valid input signal?
Thanks Johan
7 Apr
7 Apr
9:58 a.m.
On Sat, 2007-04-07 at 11:12 +0200, Johan wrote:
Hi,
I am trying to get some older equipment to work with Linux.
Specifically an ADAT blackface and a RME DIGI 32/8 card. Is this
possible?
My problem is that the red error led on my card does not stop
glowing when I attach the digital out from my ADAT to the digital in
on the soundcard. Drivers appears to be recognised and I can chose
between different input methods in GNOMES mixer applet.
you need to set the clock sync up. one of the two devices has to be the
master, one has to be a slave. there are GUIs to do this for later RME
devices, but for the DIGI 32/8, you are stuck (i think) with editing
text files or using the low level amixer command. i don't know what
mixer element (switch) needs toggling. i would suggest using the RME as
the master and the Alesis as the slave, but it doesn't matter much
either way.
I have heard
that I need to send some audio from the computer before the ADAT
sends a valid clock signal, but how can I do that when the card
refuses to work without a valid input signal?
thats not true.
8 Apr
8 Apr
6:45 p.m.
Paul Davis wrote:
you need to set the clock sync up. one of the two devices has to be the
master, one has to be a slave. there are GUIs to do this for later RME
devices, but for the DIGI 32/8, you are stuck (i think) with editing
text files or using the low level amixer command. i don't know what
mixer element (switch) needs toggling. i would suggest using the RME as
the master and the Alesis as the slave, but it doesn't matter much
either way.
I can't understand the way amixer behaves. The ADAT works only with
48000 but it card appears to refuse that sample rate. Or am I wrong?
Here is the console output:
projektet@arvo:~$ amixer
Simple mixer control 'Input Connector',0
Capabilities: enum
Items: 'Optical' 'Coaxial' 'Internal'
Item0: 'Optical'
Simple mixer control 'Loopback Input',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Sample Clock Source',0
Capabilities: enum
Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz'
'Internal 48.0kHz'
Item0: 'AutoSync'
projektet@arvo:~$ amixer set 'Sample Clock Source' 'Internal 32.0kHz'
Simple mixer control 'Sample Clock Source',0
Capabilities: enum
Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz'
'Internal 48.0kHz'
Item0: 'Internal 32.0kHz'
projektet@arvo:~$ amixer set 'Sample Clock Source' 'Internal 44.1kHz'
Simple mixer control 'Sample Clock Source',0
Capabilities: enum
Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz'
'Internal 48.0kHz'
Item0: 'Internal 44.1kHz'
projektet@arvo:~$ amixer set 'Sample Clock Source' 'Internal 48.0kHz'
Simple mixer control 'Sample Clock Source',0
Capabilities: enum
Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz'
'Internal 48.0kHz'
Item0: 'AutoSync'
8:33 p.m.
On Sun, 2007-04-08 at 22:45 +0200, Johan wrote:
Paul Davis wrote:
i would just leave it at this setting. it will sync with the ADAT as
long as the sync source is the ADAT connection (and not a S/PDIF one,
for example).
the behaviour does seem mysterious. it looks like a bug in the driver.
--p
you need to set the clock sync up. one of the two devices has to be the
master, one has to be a slave. there are GUIs to do this for later RME
devices, but for the DIGI 32/8, you are stuck (i think) with editing
text files or using the low level amixer command. i don't know what
mixer element (switch) needs toggling. i would suggest using the RME as
the master and the Alesis as the slave, but it doesn't matter much
either way.
I can't understand the way amixer behaves. The ADAT works only with
48000 but it card appears to refuse that sample rate. Or am I wrong?
Here is the console output:
projektet@arvo:~$ amixer
Simple mixer control 'Input Connector',0
Capabilities: enum
Items: 'Optical' 'Coaxial' 'Internal'
Item0: 'Optical'
Simple mixer control 'Loopback Input',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Simple mixer control 'Sample Clock Source',0
Capabilities: enum
Items: 'AutoSync' 'Internal 32.0kHz' 'Internal 44.1kHz'
'Internal 48.0kHz'
Item0: 'AutoSync'
10 Apr
10 Apr
7:26 a.m.
Paul Davis wrote:
i would just leave it at this setting. it will sync
with the ADAT as
long as the sync source is the ADAT connection (and not a S/PDIF one,
for example).
the behaviour does seem mysterious. it looks like a bug in the driver.
--p
The incapability of selecting the forth alternative disappeared when I
changed
val = ucontrol->value.enumerated.item[0] % 3;
to
val = ucontrol->value.enumerated.item[0] % 4;
on line 1758.
That is probably a bug, but rme32.c has other mysterious parts like:
1731 uinfo->value.enumerated.items = 4;
1732 if (uinfo->value.enumerated.item > 3) {
1733 uinfo->value.enumerated.item = 3;
1734 }
I am not capable of debugging alsa drivers (yet) and there is likely to
be a reason why some one wrote it that way. I suspect that it has to do
with compability with RME 32 but this is probably out of the scope of
the LAU-list anyway.
Thanks.
Johan
6490
days inactive
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linux-audio-user@lists.linuxaudio.org
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