Screen sharing fails on Wayland

[GalouFR]

Steps to reproduce

When I am in a video conference and I want to share my screen this does not work, the dialog box which allows you to choose between the whole screen and a window appears but it is empty and the share button at the bottom right is grayed out when I use Wayland on the other hand it works correctly with x11 the dialog box shows my screen correctly and I can share it.

Outcome

What did you expect?

I wish to have a fix or solution to make it work natively with the default ubuntu configuration (wayland)

What happened instead?

The share button is grayed out and it is impossible to select the screen or application to share because it does not appear.

Operating system

Ubuntu 22.04 LTS

Application version

Version de Element : 1.11.69, Version crypto : Rust SDK 0.7.0, Vodozemac 0.6.0

How did you install the app?

https://element.io/download

Homeserver

non-public server, synapse server on matrix i think

Will you send logs?

No

[frankenstein91]

just to make sure... do you have an XDG Desktop Portal installed for your desktop env?
They are needed for securely accessing resources from outside an application sandbox.

[GalouFR]

just to make sure... do you have an XDG Desktop Portal installed for your desktop env? They are needed for securely accessing resources from outside an application sandbox.

just to make sure... Where can i see it's needed on the download page ?
https://element.io/download#linux

and yes i have:
XDG Desktop Portal v1.14.4-1ubuntu2~22.04.1

[frankenstein91]

Hi @GalouFR
it is not a requirement of the chat client... It is more of a requirement imposed by Wayland and pipewire.

[Thatoo]

In #2058, @Destinyg133 is saying that

I managed to fix it by adding these for electron config "--enable-features=WebRTCPipeWireCapturer"

"--ozone-platform-hint=auto"

You can set these flags more permanently by means of [modifying the .desktop file]of an application and adding the flags to the end of the Exec= line, or more cleanly by using the configuration files.

It didn't work for me though.

[Spengreb]

There are a bunch of people with this problem. please see above issues marked as dupes

[tbbkitty]

Screen sharing works in a way for me but is not properly implemented. Selecting a window or entire screen in the pipewore prompt does add an option to application windows in Element. It will re spawn until you close Elemnt but screen sharing should work. If you close the pipewire promt element instantly crashes.

[luisfpg]

I always thought this as an electron bug, because some other electron apps like discord present the exact same error.
I even found electron/electron#45198 which is recent. However, in my system, Manjaro testing / Plasma 6.3, I've downloaded the code to reproduce which attached to the issue and it works in my local system.
As it is attached as a way to reproduce the issue in electron, it got me wondering: is this an underlying Electron bug or something in Element itself?

Can someone in their system test it by downloading the files, running electron . in the app directory (or in case of Arch, electron34 .) to check if screen share works? If so, this is not a problem in Electron, but in Element...
It is also possible to run npm i then npm start to use a local electron version.