Every upstream kernel I tested showed the problem. This problem has not occurred in previous versions of Ubuntu. The video hardware is Intel lspci: Toshiba America Info Toshiba Satellite U400 Remote Control Manager Device [ While booted into the newest upstream mainline kernel only, please execute the following in a terminal and paste the results: Ubuntu Trusty Tahr development branch Release: You may run the script by changing to the directory via a terminal, and paste the results: While booted[…]
