Haykel Ben Djemia wrote:
The XServer seems to start but I get a Black screen. After setting
the Option "MonitorLayout" to "LVDS, AUTO" , I can see the login
screen of KDE but its very dark. The strange thing is that when I
press Ctrl+Alt+F1 to switch to console mode, while switching I can
see a bright nice image for a fraction of a second.
Judging by your description, it looks like the driver is not turning
on the backlight properly.
Did you try using the XFree86 driver? Does that work correctly?