Harrison 32C Channel blank window

I just bought the 32C Channel plugin from Harrison, but opening the plugin (in the official Linux version 6.9), I get a blank screen:

Any ideas of what could be wrong?

A common issue (also with harrison AVA plugins) is that your graphics card or the openGL driver are too old.

I don’t know what requirements the channelstrip plugin has, try perhaps to software emulate



in a terminal window and start Ardour from there.

The command


worked! The interface seemed a little sluggish, but it seemed to work OK.

I suppose my card is old…

$ inxi -G
Graphics:  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics driver: i915 v: kernel 
           Device-2: Logitech Webcam C270 type: USB driver: snd-usb-audio,uvcvideo 
           Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting unloaded: fbdev,vesa resolution: 1: 1920x1080~60Hz 
           2: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2) v: 4.5 Mesa 20.3.5 

# glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 4600 (HSW GT2)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 20.3.5
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 20.3.5
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 20.3.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions:

Thanks for the help!

I have the same problem. Setting MESA_GL_VERSION_OVERRIDE shows the GUI, which is nice, but it’s still a bit sluggish.

Out of curiosity I tried the WinVST version using WINE and LinVST, it works flawessly, far much better than the LxVST, which i find rather odd.

That is odd (and unfortunate). But it’s good to know. Thanks!