besides Fn+F8, as suggested, changing the brightness may also do the trick (it worked for me in other kernels). In my e6510 it is Fn+arrow up to change brightness. Fn+arrow left (to activate / deactivate automatic brightness adjustment) may also work.
Alfe,
besides Fn+F8, as suggested, changing the brightness may also do the trick (it worked for me in other kernels). In my e6510 it is Fn+arrow up to change brightness. Fn+arrow left (to activate / deactivate automatic brightness adjustment) may also work.