Makemkv page
https://www.makemkv.com/download/ states the program runs on windows or mac so trying to run it on a linux platform
may not work.
Have you tried to rip anything other than a blue ray, dvd or audio disk to check the drive?
Vlc can record video to an mpg file when the disk is playing, but you need to add restricted packages from
the repository if on linux.
I have never had vlc work with encrypted br disks on any platform.
