Have the same problem with my msi ge 600 laptop. Driver issue likely
because I can adjast brightness switching to another video card.
lshw -c video
*-display
VGA compatible controller
Madison [Mobility Radeon HD 5000 Series]
Hynix Semiconductor (Hyundai Electronics)
ID: 0
bus info: pci@0000:01:00.0
version: 00
64 bits
33MHz
pm pciexpress msi vga_controller bus_master cap_list rom
driver=fglrx_pci latency=0
IRQ:46 memory:e0000000-efffffff memory:f0020000-f003ffff
ioport:d000(size=256) memory:f0000000-f001ffff
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https://bugs.launchpad.net/bugs/999888
Title:
Missing brightness control in System Settings/Brightness and Lock
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