Comment # 1 on bug 1209818 from Martin Sirringhaus

Same on sway, but starting manually running
`/usr/libexec/xdg-desktop-portal-gnome` does not help.

Trying to start via systemctl yields:

��������� systemctl --user start xdg-desktop-portal-gnome
Job for xdg-desktop-portal-gnome.service failed because a timeout was exceeded.
See "systemctl --user status xdg-desktop-portal-gnome.service" and "journalctl
--user -xeu xdg-desktop-portal-gnome.service" for details.

and 

��������� systemctl --user status xdg-desktop-portal-gnome
������ xdg-desktop-portal-gnome.service - Portal service (GNOME implementation)
     Loaded: loaded (/usr/lib/systemd/user/xdg-desktop-portal-gnome.service;
static)
     Active: failed (Result: timeout) since Fri 2023-03-31 09:42:37 CEST; 1min
4s ago
    Process: 24616 ExecStart=/usr/libexec/xdg-desktop-portal-gnome
(code=killed, signal=TERM)
   Main PID: 24616 (code=killed, signal=TERM)
        CPU: 18ms

Mar 31 09:41:07 suse-laptop systemd[4531]: Starting Portal service (GNOME
implementation)...
Mar 31 09:42:37 suse-laptop systemd[4531]: xdg-desktop-portal-gnome.service:
start operation timed out. Terminating.
Mar 31 09:42:37 suse-laptop systemd[4531]: xdg-desktop-portal-gnome.service:
Failed with result 'timeout'.
Mar 31 09:42:37 suse-laptop systemd[4531]: Failed to start Portal service
(GNOME implementation).