I was able to reproduce this issue by plaing with grubs framebuffer settings in /etc/default/grub
When I change it from 640x480 to 1920x1080 for my system specs, this issue appears. When I revert the setting back and reinit everything... the error no longer appears. Hope this helps. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1157311 Title: xfwm4 crashed with SIGSEGV in XUnmapWindow() To manage notifications about this bug go to: https://bugs.launchpad.net/xfwm4/+bug/1157311/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs