Comment 19 for bug 1244645

Here's the thread from ubuntu forums where this has been disscussed http://ubuntuforums.org/showthread.php?t=2181534.
Christopher, This is more than an issue with the B570 as this is happening to most computers with Intel Graphics. The workaround is written here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1244645/comments/4 as all it does is load an x11 module for the Intel Backlight device wich for some reason is not loaded upon installation by default.