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IDProjectCategoryView StatusLast Update
0010225ardourbugspublic2026-03-02 19:15
Reporterwargreen Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
PlatformDebian GNUOSLinuxOS Version(any)
Product Version9.2 
Summary0010225: Plugin connection windows is transparent for plugins with lot of I/O
DescriptionHi,

Trying to adjust connection of the IEM SimpleDecoder and DistanceCompensator (for bypass the compensator for the sub output), right-click on SimpleDecoder lead a transparent window.
I can confirm that the window exist : i can see the resize mouse cursor and right-click on the invisible title bar for closing it.

I hope that is not again an issue with wayland...
Tested on 9.2 and 9.2.26-dbg
Steps To Reproduce- New session
- (disable monitor section -> another bug)
- add IEM simpledecoder on the master track
- try to adjust connection of simpledecoder
- phantom window
TagsNo tags attached.

Activities

x42

2026-03-02 14:56

administrator   ~0030032

The window is wider than the desktop but works here on mate/Xorg.
Transparent window sounds like some wayland /window-manager related issue. Ardour cannot make windows transparent

x42

2026-03-02 14:57

administrator   ~0030033

IEM-simple-decoder-master.png (200,882 bytes)   
IEM-simple-decoder-master.png (200,882 bytes)   

x42

2026-03-02 15:04

administrator   ~0030034

PS. What is the issue with the monitor section? Can you please elaborate?

While it's odd to use master-out with 64 channels (meters require excessive space, etc), it works here

I highly recommend to use a dedicated ambisonics bus for various reasons:

You are not going to A/PFL monitor 64 channels (on headphones / control booth), but likely have mono sources. So the monitor should remain stereo.
Master bus can offer a stereo version for export, or be fed by a binaural mixdown.

You can have multiple ambisonics busses with different order (rather than one master).
64-out-with-monitor.png (186,986 bytes)   
64-out-with-monitor.png (186,986 bytes)   

wargreen

2026-03-02 15:32

reporter   ~0030035

About the monitor issue : https://tracker.ardour.org/view.php?id=10224

About the phantom window : It's very strange, i don't see any error in my system log. Have you any tips for find what is broken ?

For the buses suggestion : yes it is a bit odd, but i limit my master I/O to the wanted port number (with our "set i/o config" script) and i have patched only the 2 first outputs to my internal soundcard (thanks pipewire). It is for theater, so the non-ambisonic track outs go directly to the mixer via dante network.
For where we are in the creation of the show, i don't need other order or binaural export : it will be mostly some sample playing (direct to desk or ambisonic) and maybe DSP for ambisonic on live input.

I'll keep in mind the buses way, but it seem to me that my real ardour master is the one that decode ambisonic and send sound to the desk. That can change if ambisonic FX are no so useful.

wargreen

2026-03-02 19:15

reporter   ~0030036

After installing XFCE (on the same laptop), i can confirm that all work well with a wayland XFCE.
Maybe something strange with gnome ?

Issue History

Date Modified Username Field Change
2026-03-02 14:45 wargreen New Issue
2026-03-02 14:56 x42 Note Added: 0030032
2026-03-02 14:57 x42 Note Added: 0030033
2026-03-02 14:57 x42 File Added: IEM-simple-decoder-master.png
2026-03-02 15:04 x42 Note Added: 0030034
2026-03-02 15:04 x42 File Added: 64-out-with-monitor.png
2026-03-02 15:32 wargreen Note Added: 0030035
2026-03-02 19:15 wargreen Note Added: 0030036