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Note:

How To Detect If An App Runs On Wayland Or X-Wayland

• https://medium.com/@bugaevc/how-to-easily-determine-if-an-app-runs-on-xwayland-or-on-wayland-natively-8191b506ab9a
  
• https://fedoraproject.org/wiki/How_to_debug_Wayland_problems#Does_your_application_run_on_Wayland_natively.2C_or_uses_XWayland\_.28X11_compatibility_layer.29.3F
  

We use xeyes to detect if an app runs on Wayland or XWayland, you should
install 'xeyes' before testing. Launch xeyes and move mouse over a window. If
the eyes are moving, it’s an XWayland window, otherwise it’s a native Wayland
window.

Steps:

1. Boot to desktop, use the default session(SLE-Classic) when logging in, then launch xeyes.
   
2. Launch gedit and move mouse over the window of gedit.
   
3. Launch gedit via 'GDK_BACKEND=x11 gedit' and move mouse over the window of gedit.
   
4. Launch firefox, move mouse over the window of firefox. Then do some random operation.
   

Expected Results:

1. xeyes could be launched.
   
2. The eyes should remain still.
   
3. The eyes are moving, and gedit works fine.
   
4. The eyes are moving, and firefox works fine.",2022-08-26