If you can find a graphics card that is not Matrox, like AMD, Nvidia or Intel, then that should work around the issue.
** Summary changed: - high cpu usage + High CPU usage when software rendering -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2085772 Title: High CPU usage when software rendering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2085772/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs