Thank you – I did not get any output from the first three lines, the journalctl line gave a bunch of output, and as far as I could see, nothing looked concerning (do you want me to paste any of it?). The last cat line did give some interesting results – mainly with appmenu-gtk-module although that seems to be mostly related to firefox? I don’t personally understand it:
cat ~/.local/share/sddm/xorg-session.log
kdeinit5: preparing to launch '/usr/lib/kf5/klauncher'
kdeinit5: Launched KLauncher, pid = 5390, result = 0
kdeinit5: opened connection to :0
kdeinit5: Got SETENV 'GTK_RC_FILES=/etc/gtk/gtkrc:/home/keithcdodd/.gtkrc:/home/keithcdodd/.config/gtkrc' from launcher.
kdeinit5: Got SETENV 'GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/keithcdodd/.gtkrc-2.0:/home/keithcdodd/.config/gtkrc-2.0' from launcher.
kdeinit5: Got SETENV 'XCURSOR_THEME=Sweet-cursors' from launcher.
kdeinit5: Got SETENV 'XCURSOR_SIZE=24' from launcher.
kdeinit5: Got SETENV 'SESSION_MANAGER=local/keith-xps139300:@/tmp/.ICE-unix/5444,unix/keith-xps139300:/tmp/.ICE-unix/5444' from launcher.
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/desktop.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/desktop.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
Gtk-Message: 13:07:21.951: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:07:22.082: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:07:22.416: Failed to load module "appmenu-gtk-module"
(firefox:5560): GLib-GIO-WARNING **: 13:07:22.792: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
Gtk-Message: 13:07:23.072: Failed to load module "appmenu-gtk-module"
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
Gtk-Message: 13:07:23.472: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:07:23.625: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:07:24.081: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:07:25.268: Failed to load module "appmenu-gtk-module"
(/usr/lib/firefox/firefox:5793): GLib-GIO-WARNING **: 13:07:26.735: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
** Message: 13:07:52.734: updates_checker.vala:119: check updates
** Message: 13:07:56.939: updates_checker.vala:146: 0 updates found
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/tags.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/tags.so'
kdeinit5: PID 5582 terminated.
kdeinit5: PID 5570 terminated.
kdeinit5: PID 6045 terminated.
kdeinit5: PID 6043 terminated.
kdeinit5: PID 6044 terminated.
kdeinit5: PID 5831 terminated.
kdeinit5: PID 6042 terminated.
kdeinit5: PID 6975 terminated.
Gtk-Message: 13:36:17.069: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:36:17.449: Failed to load module "appmenu-gtk-module"
(firefox:7559): GLib-GIO-WARNING **: 13:36:17.952: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
Gtk-Message: 13:36:18.203: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:36:18.601: Failed to load module "appmenu-gtk-module"
(/usr/lib/firefox/firefox:7694): GLib-GIO-WARNING **: 13:36:19.541: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
Gtk-Message: 13:36:24.487: Failed to load module "appmenu-gtk-module"
Gtk-Message: 13:58:19.043: Failed to load module "appmenu-gtk-module"
** Message: 14:07:22.734: updates_checker.vala:119: check updates
** Message: 14:07:27.330: updates_checker.vala:146: 0 updates found
Gtk-Message: 14:38:39.312: Failed to load module "appmenu-gtk-module"
Gtk-Message: 14:38:39.731: Failed to load module "appmenu-gtk-module"
(firefox:11296): GLib-GIO-WARNING **: 14:38:40.189: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
Gtk-Message: 14:38:40.439: Failed to load module "appmenu-gtk-module"
Gtk-Message: 14:38:40.933: Failed to load module "appmenu-gtk-module"
Gtk-Message: 14:38:41.635: Failed to load module "appmenu-gtk-module"
Gtk-Message: 14:38:42.199: Failed to load module "appmenu-gtk-module"
(/usr/lib/firefox/firefox:11433): GLib-GIO-WARNING **: 14:38:44.364: /etc/xdg/kde-mimeapps.list contains a [Added Associations] group, but it is not permitted here. Only the non-desktop-specific mimeapps.list file may add or remove associations.
Also, thank you for the help with permissions!