I'm going to go ahead and close this given we are missing some information and I've reported a similar bug (1988209) already.
** Changed in: nvidia-settings (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-settings in Ubuntu. https://bugs.launchpad.net/bugs/1900929 Title: after install, invoking nvidia-settings shows no driver Status in NVIDIA Drivers Ubuntu: New Status in nvidia-settings package in Ubuntu: Invalid Bug description: Using MUON, installed the nvidia driver metapackage for 450. [note; this bug applies to all packages, 390, 330, etc]. Using terminal, when invoking nvidia-settings, the nvidia window is completely blank and the following errors are reported... (process:18974): Gtk-WARNING **: 08:23:46.948: Locale not supported by C library. Using the fallback 'C' locale. ERROR: NVIDIA driver is not loaded ERROR: Unable to load info from any available system (nvidia-settings:18974): GLib-GObject-CRITICAL **: 08:23:47.413: g_object_unref: assertion 'G_IS_OBJECT (object)' failed ** Message: 08:23:47.420: PRIME: No offloading required. Abort ** Message: 08:23:47.420: PRIME: is it supported? no Operating System: Kubuntu 20.04 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 Kernel Version: 5.4.0-52-generic OS Type: 64-bit Processors: 6 × AMD FX(tm)-6300 Six-Core Processor Memory: 31.3 GiB of RAM To manage notifications about this bug go to: https://bugs.launchpad.net/nvidia-drivers-ubuntu/+bug/1900929/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp