Regression with pipewire 0.3.78?

[garpu]

Environment

• SuperCollider version: 3.13.0
• Operating system: Slackware-current with multilib, patched to August 22.
• Other details: pipewire-0.3.78, qt5-5.15.10, boost-1.83.0, kernel 6.1.45, preempt=dynamic

Steps to reproduce

Upgrade pipewire to 0.3.78 (built with jack enabled)
Start a server, and it fails to connect:
supercollider_jack.txt

If I roll back to pipewire 0.3.77, everything works normally. Is this a supercollider bug, or a pipewire bug?

[dyfer]

Thanks for the report.
Was SC rebuilt after upgrading pipewire?

[garpu]

Yes. I tried rebuilding supercollider after I upgraded pipewire with the same result. (compiled against my system boost because I encountered this bug: #5865). Would it make a difference if I compiled it against supercollider's boost?

[dyfer]

Yes. I tried rebuilding supercollider after I upgraded pipewire with the same result.

Got it. Then I really have no idea what the issue is.

Would it make a difference if I compiled it against supercollider's boost?

I don't think so... but maybe worth a try? Otherwise I really have no idea how to approach this, though I'd double check if it's not something in the PW's JACK interface that might've changed...

[garpu]

Would it make a difference if I compiled it against supercollider's boost?

I don't think so... but maybe worth a try? Otherwise I really have no idea how to approach this, though I'd double check if it's not something in the PW's JACK interface that might've changed...

OK, I just rebuild supercollider against pipewire 0.3.78 with supercollider's boost, and it exhibited the same problem of not connecting when booting the server. Rolling back to pipewire 0.3.77 fixed it. Wait until 0.3.79 and retest?

[gitterdude]

It's pipewire-jack bug, introduced in commit 31f91ce9f4
I can start JACK programs using pipewire-0.3.77-8-gfc68fd2d4 but not with any subsequent versions.

I'm about to file a bug report on the PW site.

[garpu]

Awesome, thanks. I can add my data.

[gitterdude]

PW issue : https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3465
I've referenced this thread as well.

[garpu]

Fixed in pipewire. I'll close this, since it's not a supercollider bug.

[gitterdude]

My JACK programs work as expected now, with pipewire-0.3.78-25-gc41c81232, so supercollider should as well.

[dyfer]

Thanks for reporting back!