Calf LV2 plugins fail to load

[geckolinux]

Hi, I've been testing Carla at version 2.0-beta7 (via the binary Linux tarball) and version "1.9.7+git20171111" from the openSUSE Leap 15.0 repo. I also installed calf and lv2-calf at version 0.0.60 from the Packman repository for openSUSE Leap 15.0

With Carla 2.0-beta7, whenever I try to load any Calf plugins it says "Failed to load plugin". On the older "1.9.7+git20171111" it segfaults. There are no other helpful messages when I run it from the terminal.

Possibly related to #569?

Thanks a lot!

[falkTX]

no idea about this, I have not seen such issue before.
seems something is broken with the calf opensuse packages you use.

did you try other hosts loading calf? does carla load other lv2 plugins?

[geckolinux]

Thanks a lot for the reply.

I tried the Calf LV2 plugins in Qtractor, and interestingly it did crash the first time I tried to load one. But on subsequent tries they all load and work reliably.

Carla does load other LV2 plugins, for example ZynAddSubFx.

[geckolinux]

Here's a bit of helpful output that I found in the stderr log in 2.0-beta7 after trying to load a Calf plugin:

Failed to initialize Non-RT server control

[falkTX]

hmm I see, that means plugin bridges dont seem to be working at all in your distro.
do you have the ir.lv2 plugin? can you try to load that one?

[geckolinux]

Hmm, can't seem to find that plugin. Any ideas on alternate package names or what it does?

I just tried loading a Guitarix LV2 plugin in Carla, and it worked fine, as do the ZynAddSubFx plugins.

[falkTX]

I dont know the package name, I dont use opensuse myself.
Official page is http://tomszilagyi.github.io/plugins/ir.lv2/

[geckolinux]

Thanks, I found it in an add-on repo. Interestingly, it also fails to load in Carla.

[falkTX]

ok so plugin bridges for sure are not working there.
what exact distribution are you using, which version, which architecture?
any special configuration you did to it?

I will try to reproduce the issue in a similar system to yours.

[geckolinux]

Thanks a lot Filipe. I'm running GeckoLinux STATIC Mate, which is a custom spin of openSUSE Leap 15.0 for x86_64 with the Mate desktop. No special configuration, just QJackCtl to connect an M-AUDIO KeyStation 88es MIDI controller/keyboard. I don't understand how the Guitarix and Zyn LV2 plugins can load but not Calf or the IR plugins?

[ranomier]

Im on archlinux and they don't crash for me but,

they don't work even if i activate bypass,
the UI has missing elements,
and carla freezes about 10 seconds before loading them.

Log From freeze:

Failed to set high priority, error 1: Operation not permitted
Carla assertion failure: "ok" in file ../utils/CarlaThread.hpp, line 131
waitForClient(resize-pool) timed out
Carla assertion failure: "! fTimedOut" in file CarlaPluginBridge.cpp, line 2599
Carla assertion failure: "unlocked" in file ../utils/CarlaSemUtils.hpp, line 175
CarlaRingBuffer::tryWrite(0x7fff0012dad8, 4): failed, not enough space
waitForClient(activate) timed out
Carla assertion failure: "unlocked" in file ../utils/CarlaSemUtils.hpp, line 175
waitForClient(deactivate) timed out

Log from UI load:

(carla-bridge-native:7081): Gtk-WARNING **: 21:08:44.942: Unable to locate theme engine in module_path: "adwaita",

(carla-bridge-native:7081): Gtk-WARNING **: 21:08:44.950: Unable to locate theme engine in module_path: "adwaita",
CALF DEBUG: instance 0x5649eb7466d0 data 0x5649eb8eb8c0
CALF DEBUG: calf 0x7f5457734730 cpi 0x7f5456d3e010

Screenshot Rack + Costum UI's:

Screenshot Patchbay:

INFO:

• im using only repo packages nothing from AUR. (I think xD)
• arch 64bit
• Linux tanzanite 4.17.13-arch1-1-ARCH #1 SMP PREEMPT Mon Aug 6 23:06:31 UTC 2018 x86_64 GNU/Linux
• carla version: 1.9.9 (2.0-beta7)

If you need more information just ask.

[tresf]

Possibly worth nothing: LMMS/lmms#3942

[chitholian]

I have the similar issue on Fedora 29 KDE. I installed calf 0.90.1 and Carla version 1.9.12 (2.0-RC2), both from Github. I have no ladspa plugin installed. Whenerver I try to load a calf lv2 plugin Carla Rack freezes for a while, the log output is:

Carla assertion failure: "ok" in file ../utils/CarlaThread.hpp, line 133
CarlaRingBuffer::tryWrite(0x7ffc0a84e450, 4): failed, not enough space
waitForClient(resize-pool) timed out
Carla assertion failure: "! fTimedOut" in file CarlaPluginBridge.cpp, line 2606
Carla assertion failure: "unlocked" in file ../utils/CarlaSemUtils.hpp, line 182
waitForClient(activate) timed out
Carla assertion failure: "unlocked" in file ../utils/CarlaSemUtils.hpp, line 182
waitForClient(deactivate) timed out

Then there is no output from calf plugin (it becomes disabled automatically).

If I remove the plugin from the rack, the log output is:

CarlaThread with realtime priority successful
Will use LV2 Gtk2 UI for 'Calf Limiter', NOT!
Carla Bridge Ready!

Note: Calf Plugins working well in Ardour.

[falkTX]

Ah yes, I forgot this is still an issue in Fedora for some reason.
I was not able to fix the issue regarding lv2 state in plugin bridges, so I am taking out the hardcoded use-calf-always-in-bridges rule.
If you build carla from latest git, calf plugins will work nicely there again.
Parts of the UI might be missing, due to instance-access being required, but at least the base plugin functionality still works.