Since i bought my new Ideapad S300 (I5 Ivybridge, Intel HD4000 Graphics) i had the problem (with every distribution Sabayon, Suce, Fedora etc.) that when booting this laptop the screen brightness got completly dark. When at KDM/GDM i could adjust the brightness back to normal with the fn-keys. This was not a show stopper but quite annoying.
Now ive tried the new Suse 13.1 release and the problem seems to be finally fixed in their kernel. Now i wonder if there is a proper way to find out what they did to their kernel to possibly integrate this into sabayon kernels to improve this amazing distribution further.
I tried to look through their patches on Git but wasnt able to find a clue there. I found an intresting bug report at https://bugzilla.kernel.org/show_bug.cgi?id=62941
but iam not shure if THIS is the answer to the problem.