Comment 38 for bug 1270579

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Norbert (nrbrtx) wrote :

@Ekimia
If you use utopic kernel and xserver (https://wiki.ubuntu.com/Kernel/LTSEnablementStack#Desktop) on 14.04.2 - it is a known issue. Please install that packages from trusty. If you use MATE - it may reset backlight levels on login because of bug in mate-power-manager.
I collect all known issues on my PPA page (https://launchpad.net/~nrbrtx/+archive/ubuntu/sysvinit-backlight).