So far, you've not listed an application from the MATE desktop as being affected by this issue, in fact you specifically state that Caja (the MATE file manager) work correctly.
I also have no way to reproduce this issue given your exotic hardware configuration :-( ** Also affects: dolphin (Ubuntu) Importance: Undecided Status: New ** Also affects: vlc (Ubuntu) Importance: Undecided Status: New ** Changed in: ubuntu-mate Status: New => Invalid -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to dolphin in Ubuntu. https://bugs.launchpad.net/bugs/1637034 Title: Ubuntu Mate 16.04 mouse inputs not handled correctly on multi gpu system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1637034/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs