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[MU4 Issue] Linux VST Gui does not open #11592

Closed diedeno closed 2 years ago

diedeno commented 2 years ago

Describe the bug Ubuntu 20.04 LTS In mixer, when choosing a (any) VST, the VST GUI does not open. All MS4 versions (alpha and nightly)

Steps to reproduce the behavior:

  1. Go to Mixer
  2. Choose any VST
  3. Score plays OK, but GUI does not open. (With VST's where an instrument has to be chosen first, such as Decentsampler, of course here is no sound)
  4. See error

Expected behavior VST UI opens when selecting in Mixer

Screenshots N/A

Platform information

Additional context

llui85 commented 2 years ago

I can also reproduce this on Linux 5.10.0-12-amd64 #1 SMP Debian 5.10.103-1 (2022-03-07) x86_64 GNU/Linux. In the terminal, I see the following logs:

SurgeXT VST3
  - Version      : 1.0.1.60228e8 with JUCE 60102
  - Build Info   : 2022-01-31 17:08:57 using GNU-7.5.0
  - Data         : "/usr/share/surge-xt"
  - User Data    : "/home/me/Documents/Surge XT"
22:18:48.499 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusIndex: 0
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusType: Main
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusFlag: DefaultActive
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusIndex: 1
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusType: Main
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusFlag: ControlVoltage
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusIndex: 2
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusType: Main
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: BusFlag: ControlVoltage
22:18:48.500 | INFO  | 140415747712768 | VstAudioClient | setUpProcessData: 0 active input buses, activating default bus
22:18:48.500 | WARN  | 140415747712768 | VstSynthesiser | setupSound: Not supported!!
Jon0 commented 2 years ago

Same issue, I compiled with the hasNativeEditorSupport set to true, now it opens: https://github.com/Jon0/MuseScore/tree/Enable_vst_editor

Tantacrul commented 2 years ago

@DmitryArefiev - are you able to reproduce this?

DmitryArefiev commented 2 years ago

@DmitryArefiev - are you able to reproduce this?

Yes, can reproduce it on Linux Mint 20.2

@vpereverzev Can you explain please the details of this bug on Linux?

vpereverzev commented 2 years ago

VST GUI for Linux is not supported in MU4, since VST requires separate event loop

I'm pretty sure it was mentioned by @Tantacrul in a couple of previous announcements

Worth to mention, that we have plans to support this for future MU4.x versions, but not for MU4.0