I just installed Zorin 17 on a computer I use just for gaming. I had 16 on it and it was working with a few command and conquer games, but I didn't use the laptop for a a few years and couldn't remember the password, so I upgraded.
I have been trying to install command and conquer games such as red alert and generals using either lutris or playonlinux, but no matter what I do I keep getting this error about niceness is less than 20 and it can't set priority. I tried running a few commands I found on google that were supposed to fix it but they didn't run in Zorin. I am not very knowledgable in Linux so I really need help. I have tried installed from ISO's as well as having the original game CD's. At one point I had CNC Generals saying it was at 100% but it would never finish and there was a terminal window with that nice error.