Comment 26 for bug 1755106

Now I am just reading the referred similar bug:
https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1435020
I have the very similar problems.

In addition to that, when I applied the suggested "unity-settings-daemon
--replace" command, then not only my custon settings, but the usual
Ctrl-Alt-T terminal short cut also went away. But interestingly not
everything went away, for example the Alt-` is still working (switch
between the windows of the same binary), this is not in the custom
section, and formerly it was a default setting.

prohlep@pc56:~$ ps ax | grep settings-daemon
  1934 ? Sl 0:00 /usr/lib/unity-settings-daemon/unity-fallback-mount-helper
  3287 pts/0 Sl+ 0:00 unity-settings-daemon --replace
  3296 pts/0 Sl+ 0:00 /usr/lib/unity-settings-daemon/usd-locate-pointer
  3340 pts/1 S+ 0:00 grep settings-daemon
prohlep@pc56:~$ unity-settings-daemon --replace

** (unity-settings-daemon:3287): WARNING **: 09:12:51.381: Failed to load
PNP ids: Failed to open file “/usr/share/hwdata/pnp.ids”: No such file or
directory

(unity-settings-daemon:3287): Gtk-WARNING **: 09:12:51.462: Theme parsing
error: gtk-main.css:73:38: Failed to import: Error opening file
/usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file
or directory

** (unity-settings-daemon:3287): WARNING **: 09:12:51.539: Failed to load
PNP ids: Failed to open file “/usr/share/hwdata/pnp.ids”: No such file or
directory

** (unity-settings-daemon:3287): WARNING **: 09:12:51.539: Failed to load
PNP ids: Failed to open file “/usr/share/hwdata/pnp.ids”: No such file or
directory

(unity-settings-daemon:3287): media-keys-plugin-WARNING **: 09:12:51.552:
Grab failed for some keys, another application may already have access the
them.

(usd-locate-pointer:3296): Gtk-WARNING **: 09:12:51.559: Theme parsing
error: gtk-main.css:73:38: Failed to import: Error opening file
/usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file
or directory

(unity-settings-daemon:3287): Gtk-WARNING **: 09:12:51.566: Theme parsing
error: gtk-main.css:73:38: Failed to import: Error opening file
/usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file
or directory

** (unity-settings-daemon:3287): WARNING **: 09:12:51.582: Failed to load
PNP ids: Failed to open file “/usr/share/hwdata/pnp.ids”: No such file or
directory

(unity-settings-daemon:3287): GLib-GIO-CRITICAL **: 09:13:15.145:
g_dbus_proxy_call_internal: assertion 'G_IS_DBUS_PROXY (proxy)' failed

^^^^^^^^ here the last log item shows what happens, when I wist to refresh
the key binding in the custom section. Everytime I try to set a
keybinding this gets printed.

Also the line "(unity-settings-daemon:3287): media-keys-plugin-WARNING **:
09:12:51.552: Grab failed for some keys, another application may already
have access the them." is interesting, ... is this because I started
"unity-settings-daemon --replace" manually, and therfore now the original
is running and my new command is also running?