I have a sporadic issue with the brightness control, thats mean sometimes I start my laptop from standby and the control with "Fn+Pos1 or FN+END" doesn't work.
There is no reaction and no on screen display progress bar. Also in the default Windows 7 energy settings is no control of the display brightness possible.
If the issue exist, only a complete reboot of the ThinkPad solve the issue.
I've also found some discussions about this in the internet but no solution helps realy.
NOTE: My Laptop has a complete clean install of Windows 7 and all drivers was installed by Lenovo System Updater.
Does anybody have the same issue?
Thanks for your help