If you experience overheating of the Sony Xperia ZR phone after upgrading the system to 10.3.1.A.2.67, you can reduce this by disabling NFC. The overheating was due to NFC being switched on by default after the upgrade. Apparently, the upgrade leaves it on after you power on the phone.
The Lenovo Ideapad Z580 comes with the Intel HD 4000 on board graphics and a Nvidia GT630M 1 GB DDR3 graphics card. The technology behind it is called Optimus, where in Windows, the computer can manage the switch between the graphics cards (on board or otherwise) when graphics power is needed. As the Nvidia graphics … Continue reading How to improve Lenovo Ideapad Z580 battery backup time and reduce heat in Ubuntu Linux