Screen Brightness issues

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https://bbs.archlinux.org – Dell Latitude 6430 with Intel HD 4000 graphics. Same issue; I noticed it starting a couple days ago. If I go slowly, I can alter the brightness with the keys, but yeah, if I go up and then or go too quickly, it wigs out until I kill X. Even the slider in the setting jumps around while the brightness changes.3.7.5-1-ARCH as well on this system. I have the 64-bit and 32-bit intel driver installed, for whatever it's worth. mtcupps https://bbs.archlinux.org/profile.php?id=43291 2013-02-08T05:11:04Z (HowTos)