unfortunately for me, upgrading to kernel 4.7 didn't solve the issue. Nor downgrading to kernels 3.13.10, 3.13.11 or 3.19.
** Attachment added: "Espaço de Trabalho 1_128.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1572801/+attachment/4715735/+files/Espa%C3%A7o%20de%20Trabalho%201_128.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1572801 Title: Ubuntu 16.04 Unity desktop uses much more ram than Ubuntu 15.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1572801/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs