I follow these instruction on Kubuntu 12.04. Perhaps you will serve: But first I Install: kgamma kdegraphics I gave then right clicked on the desktop, and then run order, and a search box appears, put there "Kgamma" and appears "Gamma", I gave click and a window which says: "Gamma control module KDE" and there are all options to adjust the brightness of the monitor. I served to adjust the brightness of an external monitor (I have a Dell Inspiron 1750 laptop) brand VA1931wa-LED Viewsonic model an...
I follow these instruction on Kubuntu 12.04. Perhaps you will serve: But first I Install: kgamma kdegraphics I gave then right clicked on the desktop, and then run order, and a search box appears, put there "Kgamma" and appears "Gamma", I gave click and a window which says: "Gamma control module KDE" and there are all options to adjust the brightness of the monitor. I served to adjust the brightness of an external monitor (I have a Dell Inspiron 1750 laptop) brand VA1931wa-LED Viewsonic model an...
I follow your instruction: desktop > right_click > "kgamma" But first I Install: kgamma kdegraphics I gave then right clicked on the desktop, and then run order, and a search box appears, put there "Kgamma" and appears "Gamma", I gave click and a window which says: "Gamma control module KDE" and there are all options to adjust the brightness of the monitor. I served to adjust the brightness of an external monitor (I have a Dell Inspiron 1750 laptop) brand VA1931wa-LED Viewsonic model and worked ...