I downloaded fresh daily build from 11.03.2014, the problem is reproduced, I confirm a bug. Problem reproduced on virtual computer under Microsoft Hyper-V 2008 R2 SP1 at a stage installation and a language choice. When scrolling mouse wheel (middle button) scrolling doesn't work, and cursor jumps in a slevy top corner. If come at the scrollbar "Ayatana Overlay" buttons, 1 time scrolling occurs and the cursor again jumps in the left top corner. Watch video in attach. P.S. Awful scaling of window at language choice it is normal?
** Attachment added: "videorecord with bug" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1240731/+attachment/4021355/+files/Video_2014-03-13_094223_ubuntu14.04_hyper-v2008r2.wmv -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240731 Title: Mouse middle wheel not working on Hyper-V To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1240731/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs