Ubuntu
mate-terminal package

Wrong $DISPLAY under Xwayland

Bug #2001686 reported by Geert Uytterhoeven
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This bug affects 1 person
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mate-terminal (Ubuntu)
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Bug Description

After upgrading from Ubuntu 20.04 LTS to 22.04.1 LTS (which switches from Xorg to Xwayland), it is no longer possible to launch local X applications, or to use X forwarding with ssh -X.

    $ xlsclients
    xlsclients: unable to open display "wayland-0"

Inside mate-terminal under Xwayland:
    $ echo DISPLAY=$DISPLAY; echo WAYLAND_DISPLAY=$WAYLAND_DISPLAY
    DISPLAY=wayland-0
    WAYLAND_DISPLAY=wayland-0

Inside gnome-terminal under Xwayland:
    $ echo DISPLAY=$DISPLAY; echo WAYLAND_DISPLAY=$WAYLAND_DISPLAY
    DISPLAY=:0
    WAYLAND_DISPLAY=wayland-0

Disabling Wayland (set WaylandEnable=false in /etc/gdm3/custom.conf) fixes the issue.

mate-terminal version: 1.26.0-1ubuntu2

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