Comment 61 for bug 12637

In my case the brightness changes (dims) when I start a video in VLC, but not when I use any of the other video players that I have tested (Kaffeine e.g. works without any dimming).

It also changes (dims) when I start a virtual OS in VirtualBox. The dimming actually happens several times during the boot process of the virtual OS. I only notice that if I turn the brightness back up again immediately after each dimming. I need to use the Power Manager applet in Kubuntu to do that, since the ordinary brightness buttons stop working every time the screen dims. It would be nice to be able to do some other work while the virtual OS is booting (it does take a while), but the only thing I can do, is play whack-a-mole with the brightness bug.