I installed Ubuntu 14.04.1 alongside Windows 8.1 and the only problem I had was that I wasn't able to boot Windows 8.1, because when I installed Ubuntu, I forgot to choose the EFI disk partition as the boot device. I reinstalled Ubuntu, and after reinstall I can enter Windows 8.1, but my mouse is not working properly in Ubuntu. It only works correctly when I click the top pannel, for example: log out, the calendar, etc, if I start any application, I cannot use the mouse left button or right button to close window, focus in text input box, switch tab, etc…
The mouse middle button works, and the mouse cursor can move correctly, and on web pages, mouseover effects work.
This issue only occurs with Unity desktop environment, the mouse click works correctly with gnome shell, but I would like to use Unity.
My mouse is USB. I use integrated graphic card hd3000.
How do I solve this?