30 Oct
2008
30 Oct
'08
10:45 a.m.
On Thursday 30 October 2008 05:41:34 Crypto wrote:
On Thursday 30 October 2008 03:27:40 Patrick Shirkey
wrote:
Do you perhaps have two copies of jack running?
grep for jack in a ps output.
Kmix is possibly rewriting the .asoundrc file to
make the device the
"default" card.
I'm not sure what your settings are in qjackctl. Are you assigning
devices by name or by node point?
ex, intel, usb, hw:0,0 hw: 1,0
Patrick,
a .asoundrc file is neither in my /home directory nor in the /etc directory
so I do not think Kmix is creating one.
When I use qjackctl I look at the connections that are possible. qjackctl
finds all audio devices connected to my notebook and their relevant device
names and node points and displays them. They are updated whenever I
restart qjackctl.
It means that I can get a hw:0,0 for my external USB device but I can also
get a hw:2,0 for it. qjackctl monitors that and always seems to display the
latest device name/node point combination. So the answer to Your question
is "I look at the device name and qjackctl knows the node point for jackd
assigned to the device name".
The problem is that after looking at the combination and chosing the
relevant device name/node point from this menu list for the external USB
audio device I am still not getting external audio output with jack when I
use amarok that I have set to "jack" for audio output. This appears to be
linked somehow with the Kmix menu display settings. That is, if Kmix
displays the external USB device settings I am getting amarok external USB
audio output, but if Kmix displays onboard sound settings then amarok uses
internal onboard sound, regardless the fact that qjackctl is set to output
to external USB device.
I wonder if qjacktcl/jackd creates a permanent list of audio devices and
their node points once and does not update this list afterwards. Whenever a
device is connected jack looks into this list and takes the node point
assigned to a device, regardless the fact that the node point could have
changed meanwhile.
Crypto.
all the best,
drew
> In short form:
>
> 1.) -> Set Kmix to display onboard sound settings,
> -> Set qjackctl to output to external sound card,
> -> Set amarok to use jack for audio output,
> -> amarok plays via onboard sound.
>
> 2.) -> Set Kmix to display external USB sound settings,
> -> Set qjackctl to output to external USB sound card,
> -> Set amarok to use jack for audio output,
> -> amarok plays via external USB sound card.
>
> Could it be a problem with the hotplugging of USB hardware?
>
> Thanks for any hint,
> Crypto.
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