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Magnetic Tape
Posts: 19
Registered: ‎07-10-2011
Location: Denmark
Message 11 of 14 (663 Views)

Betreff: Brightness control issue on ThinkPad X220

I have deactivated WWAN (UMTS) but my issue stille persist.

 

Is this an issue in Win8 also?

 

 

Ctrl-Alt-Del
Posts: 11
Registered: ‎05-04-2012
Location: Germany
Message 12 of 14 (629 Views)

Betreff: Brightness control issue on ThinkPad X220

Hi, I have news regarding the brightness issue.

No, it isn't the UMTS module.

In my case, I have deactivated the action for closing the lid and this is apparent the reason for the issue.

Well, if I press FN + F4 for standby mode and close the lid promptly, so the Notebook is going in standby mode but not finished. The issue exist.

Ok, I repeat this action but I'm waiting for the notebook is completly in standby and first after this I do close the lid. Everthing is fine and I haven't the issue :-D


I hope this information will help you and perhaps anybody will find a solution.

 

Thanks

Token Ring
Posts: 57
Registered: ‎08-25-2010
Location: Chicago
Message 13 of 14 (618 Views)

Betreff: Brightness control issue on ThinkPad X220

I have this problem as well. No msata and no wwan. Sometimes it works normally, sometimes no response at all, sometimes brightness will change but no on-screen display.
Magnetic Tape
Posts: 19
Registered: ‎07-10-2011
Location: Denmark
Message 14 of 14 (592 Views)

Betreff: Brightness control issue on ThinkPad X220

Possuble workaround:

 

If I close the screen down and wait until it has finished going into sleep mode and then reopen the controls work again.

 

 

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