Also during installation instruction “sudo snap install core” does’nt work.
Raspberry Pi 4, buster
thats not actually an error message 
what exactly happens if you run that command ?
There is a lot of messages:
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (de_DE.UTF-8)
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
MoTTY X11 proxy: Unsupported authorisation protocol
Unable to init server: Could not connect: Connection refused
(glade:1632): Gtk-WARNING **: 15:25:13.032: cannot open display: localhost:10.0
so this is not debian buster but raspbian (who hack up the library path with this libarmmem stuff, this is noisy but harmless) …
looks like you either have no desktop running or you are missing an interface connection (you can see the connections of the glade snap with snap connections glade and connect them with the snap connect ... command)
Thanks very much for your very fast reply!!!
Yes I program the Raspberry Pi 4 via “MobaXterm” and don’t use any other desktop.
pi@pi:/ $ snap connections glade
Interface Plug Slot Notes
content[gnome-3-34-1804] glade:gnome-3-34-1804 gnome-3-34-1804:gnome-3-34-1804 -
content[gtk-3-themes] glade:gtk-3-themes gtk-common-themes:gtk-3-themes -
content[icon-themes] glade:icon-themes gtk-common-themes:icon-themes -
content[sound-themes] glade:sound-themes gtk-common-themes:sound-themes -
dbus - glade:glade -
desktop glade:desktop :desktop -
desktop-legacy glade:desktop-legacy :desktop-legacy -
gsettings glade:gsettings :gsettings -
home glade:home :home -
mount-observe glade:mount-observe - -
network glade:network :network -
opengl glade:opengl :opengl -
removable-media glade:removable-media - -
wayland glade:wayland :wayland -
x11 glade:x11 :x11 -
pi@pi:/ $
i’m not exactly sure what MobaXterm uses by default to forward your desktop, but if it is ssh based you could try the instructions from:
otherwise, perhaps switch to another backend like vnc …
So far, with a small screen attached via HDMI port directly to the Raspberry glade runs fine!
So I have to understand the xterm settings using SSH
Many thanks for your time and help
Klaus
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