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Posts: 11
Registered: ‎05-04-2012
Location: Germany
Views: 5,850

Brightness control issue on ThinkPad X220

Hello ThinkPad-Community,


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

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