No desktop or window frame context menus

I'm running fluxbox without any DE. For some reason I lost the ability to raise the desktop and window frame context menus with the right mouse button. I found that fluxbox did not place a "fluxbox" file into /user/share/menu/ as it should. Creating it by hand did not help. The other files there look OK as do the files in ~/.fluxbox, including the menu file. I ran # update-menus with no effect Perhaps unrelated, but the menu problem coincided with a problem configuring the nvidia-persistenced package. The package is installed but only partially configured. When I reinstall it I get this: Setting up nvidia-persistenced (460.32.03-1) ... Starting NVIDIA Persistence Daemon nvidia-persistenced failed to initialize. Check syslog for more details. invoke-rc.d: initscript nvidia-persistenced, action "start" failed. dpkg: error processing package nvidia-persistenced (--configure): installed nvidia-persistenced package post-installation script subprocess retu> There's no report of an error in syslog.