Re: audio subsystem not available - can't record audio

   I see you are up and running.  I'd like to do a little more digging 
into this in case there is a legitimate bug that we can fix.  Or even 
just something someone else might run into in the future in terms of 
system setup.

   In order of "easiest for you":

1. Can you send me the message log from QJackCtl?

2. And a screenshot of the connections in QJackCtl.

3. Can you install a real-time kernel?  Those 250Hz warnings are 
worrisome.  Especially if you are running at 88.2kHz.  I have a page 
with steps:

   http://www.tedfelix.com/linux/linux-midi.html

4. Can you build and run the latest Rosegarden?  It's a bit of a 
complicated task and will suck up an hour or two of your time.  But if 
you are using Rosegarden for serious endeavors, running the latest is a 
good idea.  This will also let me make changes to help track down this 
issue (if needed) and you can pick them up immediately.  Absolutely 
understand if you don't want to pursue this.  It is a commitment.  And 
it could lead to some instability for you.  (You can always fall back to 
running your favorite stable version.)

   https://www.rosegardenmusic.com/wiki/dev:building_rosegarden_from_source

Ted.

On 7/15/23 9:42 PM, [email protected] wrote:
> Hi Ted,
> 
> As requested:
> 
> Rosegarden 20.06 - AlsaDriver [ALSA library version 1.2.2, module version
> 5.11.0-7620-generic, kernel version 5.11.0-7620-generic]
> 
> ===============================================================
> JackDriver::initialise() begin...
> JACK sample rate = 88200Hz, buffer size = 2048
> Creating audio file thread...
> Found 1 JACK physical outputs
> connecting from "rosegarden:master out L" to "a2j:Midi Through [14]
> (playback): Midi Through Port-0"
> WARNING: cannot connect to JACK output port
> 
>    ALSA Client information:
> 
>      14,0 - (Midi Through, Midi Through Port-0)			(DUPLEX) [ctype 2, ptype
> 655362, cap 99]
>      128,0 - (FLUID Synth (47987), Synth input port (47987:0))		(WRITE
> ONLY) [ctype 1, ptype 1310726, cap 66]
> 
> Using low-resolution system timer, sending a warning
>      Current timer set to "system timer"
>      WARNING: using system timer with only 250Hz resolution!
> AlsaDriver::initialiseMidi -  initialised MIDI subsystem
> 
> AlsaDriver::setPlausibleConnection: connection like "" requested for device 0
> AlsaDriver::setPlausibleConnection: fuzzy match 128:0 Synth input port
> (47987:0) (write) available with fitness 1
> AlsaDriver::setPlausibleConnection: connection like "" requested for device 1
> AlsaDriver::setPlausibleConnection: nothing suitable available
> 
>    ALSA Client information:
> 
>      14,0 - (Midi Through, Midi Through Port-0)			(DUPLEX) [ctype 2, ptype
> 655362, cap 99]
>      128,0 - (FLUID Synth (47987), Synth input port (47987:0))		(WRITE
> ONLY) [ctype 1, ptype 1310726, cap 66]
> 
> AlsaDriver::setPlausibleConnection: connection like "20:0 UMC1820 MIDI 1
> (duplex)" requested for device 0
> AlsaDriver::setPlausibleConnection: nothing suitable available
> AlsaDriver::setPlausibleConnection: connection like "20:0 UMC1820 MIDI 1
> (duplex)" requested for device 1
> AlsaDriver::setPlausibleConnection: nothing suitable available
> 
>    ALSA Client information:
> 
>      14,0 - (Midi Through, Midi Through Port-0)			(DUPLEX) [ctype 2, ptype
> 655362, cap 99]
>      128,0 - (FLUID Synth (47987), Synth input port (47987:0))		(WRITE
> ONLY) [ctype 1, ptype 1310726, cap 66]
> 
> AlsaDriver::setPlausibleConnection: connection like "" requested for device 0
> AlsaDriver::setPlausibleConnection: fuzzy match 128:0 Synth input port
> (47987:0) (write) available with fitness 1
> AlsaDriver::setPlausibleConnection: connection like "" requested for device 1
> AlsaDriver::setPlausibleConnection: nothing suitable available
> 
>    ALSA Client information:
> 
>      14,0 - (Midi Through, Midi Through Port-0)			(DUPLEX) [ctype 2, ptype
> 655362, cap 99]
>      128,0 - (FLUID Synth (47987), Synth input port (47987:0))		(WRITE
> ONLY) [ctype 1, ptype 1310726, cap 66]
> 
> Using low-resolution system timer, sending a warning
>      Current timer set to "system timer"
>      WARNING: using system timer with only 250Hz resolution!
> Using low-resolution system timer, sending a warning
>      Current timer set to "system timer"
>      WARNING: using system timer with only 250Hz resolution!
> Using low-resolution system timer, sending a warning
>      Current timer set to "system timer"
>      WARNING: using system timer with only 250Hz resolution!
> 
> 
> 
>>     For troubleshooting JACK issues, there is a log viewer in
>> preferences.  Go to Edit > Preferences... > Details...
>>
>>     That will display the log viewer.  See if there's anything
>> interesting there.  If needed, copy and paste and email it to the list
>> and we'll look further.
>>
>> Ted.
>>
>> On 7/15/23 12:25 AM, [email protected] wrote:
>>> Hi guys,
>>>
>>> I'm getting the following error message when I try to activate recording
>>> on an audio track:
>>>
>>> "audio subsystem not available - can't record audio"
>>>
>>> in a window that has the header:
>>>
>>> Rosegarden (as superuser)
>>>
>>> This is happening with Rosegarden Version 23.06 "Flutterbye"
>>> Build Key 13280f9033
>>> Qt Version 5.15.9
>>>
>>> Running under Pop!_OS 20.10 Linux with
>>> QjackCtl Version 0.5.0
>>> Qsynth Version 0.6.3
>>> Using FluidSynth 2.1.3
>>>
>>> QjackCtl and Qsynth are working and sound fine.  Qsynth's audio outputs
>>> show up on QjackCtl's patchbay but no audio inputs to Rosegarden appear.
>>> All the MIDI ins and outs seem to be working fine.
>>>
>>> The "self-recording" feature of Rosegarden used to work.  Is this a bug?
>>> Is there a workaround?  I used to use it to record (with perfect
>>> synchronization) track by track, and sometimes double track, various
>>> patches and synths.
>>>
>>> Thanks for all you do, and in advance,
>>>
>>> [email protected]
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Rosegarden-user mailing list
>>> Rosegarden-user-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org - use the link below to
>>> unsubscribe
>>> https://lists.sourceforge.net/lists/listinfo/rosegarden-user
>>
>>
>> _______________________________________________
>> Rosegarden-user mailing list
>> Rosegarden-user-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org - use the link below to unsubscribe
>> https://lists.sourceforge.net/lists/listinfo/rosegarden-user
>>
> 
>