"miPointer*: Invalid input device pointer" lines in Xorg.0.log are coming from the patch "169_mipointer_nullptr_checks.patch" in xorg- server (seems to be an Ubuntu patch).
Perhaps this bug insert some side effects ?... It was proposed to resolve this bug : https://bugs.launchpad.net/ubuntu/+source/xorg- server/+bug/324465 Just my 0.00002 cents. Thanks -- [multi screen] mouse position sometimes wrong https://bugs.launchpad.net/bugs/363375 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs