you were absolutely right.
I did not know pipewire-jack lacked the backends.
So it appears that the latest auto-update reverted my settings - during my initial installation of ubuntu studio 24.04 I had switched from pipewire-jack to jackd+pulseaudio (using "ubuntustudio audio controls") .
anyway it is indeed fixed.
I wonder if there was any way that I could "see" that the pipewire-jack was selected other than the fact that the backends were missing.
Thanks again for the reminder that helps me solve this.
On Sun, Mar 9, 2025 at 11:32 AM David Kastrup <dak@xxxxxxx> wrote:
Athanasios Silis <athanasios.silis@xxxxxxxxx> writes:
> Hi all,
> I am using ubuntu studio 24.04 and it looks like jackd2 has stopped working
> on a jackd client that I am using:
>
> I used to start normally the jackd session as
> $ jackd -dnet -C 4 -P 8
>
> but I've been seeing these messages since last night:
> jackdmp 1.9.21
> [...]
> [W][02502.216661] default | [ control.c: 67
> jackctl_server_create2()] not implemented 0x573493a90ec0 0x573493a91020
> 0x573493a910f0
> [W][02502.216855] default | [ control.c: 154
> jackctl_server_get_parameters()] 0x57349bb68d10: not implemented
> [W][02502.216925] default | [ control.c: 142
> jackctl_server_get_drivers_list()] 0x57349bb68d10: not implemented
> [W][02502.216966] default | [ control.c: 225
> jackctl_driver_get_name()] 0x57349bb68cf0: not implemented
> *Unknown driver "net"*
> [W][02502.217019] default | [ control.c: 94
> jackctl_server_destroy()] 0x57349bb68d10: not implemented
>
> I am mostly worried about this
> "unknown driver net" messages, but perhaps the warnings are also relevant.
>
> Indeed something is changed and the backends have vanished:
> $ jackd --help
> [...]
> Available backends:
> [W][03817.946848] default | [ control.c: 233
> jackctl_driver_get_type()] 0x5a35d9340cf0: not implemented
> [W][03817.946852] default | [ control.c: 225
> jackctl_driver_get_name()] 0x5a35d9340cf0: not implemented
> dummy (slave)
>
> [W][03817.946857] default | [ control.c: 165
> jackctl_server_get_internals_list()] 0x5a35d9340d10: not implemented
> Available internals:
>
> [W][03817.946863] default | [ control.c: 94
> jackctl_server_destroy()] 0x5a35d9340d10: not implemented
>
> I found this topic https://linuxmusicians.com/viewtopic.php?t=19590 where
> reinstalling jack in arch fixed their issue..
>
> I tried the same as
> $ dpkg -l | grep jackd
> $ sudo apt install --reinstall jackd jackd2 jackd2-firewire
> libjack-jackd2-0 libjack-jackd2-dev
>
> but the issue persists. I assume some automatic update caused this but I
> wonder if anyone else has seen this and if you managed to fix it somehow.
>
> Thank you in advance for your help
I don't think that this jack, actually. Instead it looks like the jack
emulation layer of pipewire.
If you really need jack, try installing pulseaudio (which will supplant
pipewire but leave jack alone) as the Ubuntu default desktop sound
daemon.
--
David Kastrup
_______________________________________________ Linux-audio-user mailing list -- linux-audio-user@xxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to linux-audio-user-leave@xxxxxxxxxxxxxxxxxxxx
