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Helm 0.9.0 freezes Ubuntu
Happens with on LV2, LinuxVST, and standalone version.
The standalone version doesn't even open up, it just freezes the system completely.
Plugin versions open the GUI after a struggle. Usually, the crash/freeze happens when changing any parameters of the synth. The plugin produces audio without any issues, but opening the GUI freezes the system.
My system:
Operating System: Ubuntu 20.04 LTS
Kernel: Linux 5.4.0-31-lowlatency
Architecture: x86-64
I observed similar behavior on Ubuntu Studio 19.10 64 to be with Ardour 6 Demo. I added Helm LV2 to the track and tried everything in a row presets from the Bass section. After about 3-5 minutes, everything except the sound hung, even the mouse did not move. I waited,to restart the computer, but suddenly a beggar window popped up asking me to buy Ardour and suddenly it thawed, the mouse worked again, I played with Helm for about 1 minute and again the frieze, which again thawed using the beggar window. Then I tried to use VST-Helm instead of LV2 and it no longer froze the system at all. Then I recreated the session and tried to reproduce the error with the LV2 version again, but nothing worked. Helm worked hard and did not freeze anything ... An incomprehensible bug. Moreover, I am sure that this happened to me a year ago when I last tried to use Helm on Xubunta or Kubunta 18.
Helm was obtained from the Ubuntu Studio repository (Helm 0.9)
Same experience with v0.9.0 on Debian buster (10.4 - amd64). Interestingly, the same version of the package for armhf works fine on my Raspberry Pi4 with Rapsbian buster too! But I'm not using Gnome 3 on that box (default windows manager from Raspian).