Zoom Workplace disconnects when using OpenBoard on Ubuntu

[fabioschoen]

I am using OpenBoard 1.7.3 on a Yoga 2-in-1 laptop with Ubuntu 25.10 + Wayland

During my lectures I share my screen with a remote display through Zoom Workplace Share screen option. When using OpenBoard very soon (2/3 minutes) the zoom connection is lost, and the zoom app is frozen (I have to explicitly kill it froma terminal).
Any help on this?
Thks!!
Fabio

Some messages on my console:

QSocketNotifier: Can only be used with threads started with QThread
Persisting document metadata; path is "/home/schoen/.local/share/OpenBoard/document/OpenBoard Document 2026-04-16 13-34-11.014/metadata.rdf"
Wayland does not support QWindow::requestActivate()
Wayland does not support QWindow::requestActivate()
Wayland does not support QWindow::requestActivate()
Uncaught ReferenceError: $ is not defined
Persisting document metadata; path is "/home/schoen/.local/share/OpenBoard/document/OpenBoard Document 2026-04-16 13-34-11.014/metadata.rdf"
XIO: fatal IO error 4 (Interrupted system call) on X server ":0"
after 11246 requests (11246 known processed) with 0 events remaining.

[letsfindaway]

Hi Fabio,

When using OpenBoard very soon (2/3 minutes) the zoom connection is lost, and the zoom app is frozen

Ok, it is the Zoom App which is frozen. OpenBoard continues to work normally?

Am I right that you run the Zoom Workplace as a separate application and not a Zoom session in the browser? Did you download the app from Zoom or did you use the Flatpak? My recommendation is to use the Flatpak, as it is more separate from the rest of your environment.

QSocketNotifier: Can only be used with threads started with QThread

Do you have any idea which action causes this message? Does it appear immediately after start? Is there any special user interaction which triggers this? I don't have it here on my side.

Wayland does not support QWindow::requestActivate()

Ok, this happens when you run OpenBoard on Wayland. Could you try to run it on X11 and see whether the problem occurs also there?

XIO: fatal IO error 4 (Interrupted system call) on X server ":0"

... but this error message definitely comes from some X11 library. Strange.

You could also try to switch the platform plugin by explicitly starting OpenBoard as follows:

• QT_QPA_PLATFORM=wayland openboard for native Wayland calls
• QT_QPA_PLATFORM=xcb openboard for using xwayland

[fabioschoen]

Thanks for your reply! Today I had the opportunity of applying some suggested changes and test them in the original environment. I did two things: 1) I set QT_QPA_PLATFORM=wayland as an environment variable 2) I updated my zoom app to the latest version 7.0.0 It (almost) worked.... in the sense that the screen sharing worked ininterruptly for roughly ome hour. Then it crashed, but I could re-connect and it worked agai for another half an hour. Not perfect, but acceptable. I tend to think it's more a problem of zoom than one of openboard.... Many thanks! fabio

On Thu, 16 Apr 2026 at 16:04, Martin Winter ***@***.***> wrote: Hi Fabio, When using OpenBoard very soon (2/3 minutes) the zoom connection is lost, and the zoom app is frozen Ok, it is the Zoom App which is frozen. OpenBoard continues to work normally? Am I right that you run the Zoom Workplace as a separate application and not a Zoom session in the browser? Did you download the app from Zoom or did you use the Flatpak? My recommendation is to use the Flatpak, as it is more separate from the rest of your environment.

I installed the zoom workplace app directly from ubuntu

…

QSocketNotifier: Can only be used with threads started with QThread Do you have any idea which action causes this message? Does it appear immediately after start? Is there any special user interaction which triggers this? I don't have it here on my side. Wayland does not support QWindow::requestActivate() Ok, this happens when you run OpenBoard on Wayland. Could you try to run it on X11 and see whether the problem occurs also there? XIO: fatal IO error 4 (Interrupted system call) on X server ":0" ... but this error message definitely comes from some X11 library. Strange. You could also try to switch the platform plugin by explicitly starting OpenBoard as follows: - QT_QPA_PLATFORM=wayland openboard for native Wayland calls - QT_QPA_PLATFORM=xcb openboard for using xwayland — Reply to this email directly, view it on GitHub <#1475 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AICWA3G5K4BQWU6TNTAOLA34WDR7NAVCNFSM6AAAAACX3P5HB6VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTMNJYHAYTCMY> . You are receiving this because you authored the thread.Message ID: ***@***.*** com>