I have two computers running Linux Mint 18.2 Cinnamon both with all the latest updates applied. I have installed kaffeine on both using the software manager. I am trying to used the DVD player function on both. On one it works fine and on the other it appears to go into a loop with nothing changing on the display. I used the System monitor to see the process kaffeine-xbu at a very constant 20%. On the computer with the loop I have verified that the hardware is not the problem by using VLC to play the dvd successfully. One signification difference between the two computers is the number of cores. On the computer that has kaffeine working successfully there is two cores. On the computer that does not have kaffeine working successfully there is four cores (AMD A8-7600). I have three questions: 1. must I used KDE to run kaffeine - I suspect the answer is no 2.I have looked at all of the kaffeine setting that are exposed by the GUI and do not see anything that might address a loop problem - am I missing something? 3. Is this a bug? If there is an other information you need please let me know.
Kaffeine 1.2.x uses a very old library for media display (libxine), and there are several known bugs on it. Since 2015 (Keffeine 1.3.x), we're using libVLC instead. Unfortunately, we're not supporting Qt4 versions of Kaffeine upstream anymore (e. g. versions below 2.0.x). I suggest you to either upgrade to the latest Kaffeine 2.0.x version or to report the bug for your distribution, for them to either upgrade to a newer version or to work on some fix for it.