in command line type
select "remove installed packages"
it will look thru everything you have installed and give a menu to choose from.
select the Xfree you put in..........Xfree and Xorg stuff are causing conflicts.....so one of them needs to go..........
YOU can use both XFree and Xorg, but you need to set them up so they don't
interact with each other...........and doing this just comes from have more
experience with Slack!!!