It is very likely, that this is a "Connection probing causes stalls" bug. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/957298
You can try "drm.debug=0x02" as kernel parameter. You get in kern.log events. You can try the "disable polling" workaround. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1029882 Title: Intel HD graphics: Mouse is not running smoothly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1029882/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs