SOLUTION: This worked for me, edit your dosbox.conf file and find the part to replace with this:
fullscreen=true fulldouble=false fullresolution=1024x600 windowresolution=1024x600 output=overlay autolock=true sensitivity=100 waitonerror=true priority=higher,normal mapperfile=mapper-0.74.map usescancodes=true NOTE: resolution must meet your screen's actual resolution, i used 1024x600. I'm pretty sure you can later on tweak the window mode. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/778290 Title: Switching to full-screen requires reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dosbox/+bug/778290/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs