/usr/share/man/man3/XF86VidModeLockModeSwitch.3.gz is in libxxf86vm-dev 1:1.1.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/XF86VM.3.gz
/usr/share/man/man3/XF86VM.3.gz