T410s brightness control

[buckalho]

Dear Community,

I remembered there was a registry fix posted on lenovo website to resolve inconsistent when increment / decrement brightness control, but I could not find it anymore.

when decrement from 15 (max), it goes like: 15-14-13-12-11-10-9-8-6-3-0
when incrementing from 0(min), it goes like: 0-4-7-10-11-12-13-14-15
Tried reinstalling hkey driver as well as power manager but none works.

Does anybody knows the solution for this problem?

Thanks

[pshifrin]

My two year old counts like that... 1, 2, 5! My T410s does the same.

[Colonel O'Neill]

Try updating/reinstalling your graphics driver too. I've had situations where the hotkey wouldn't work, and a graphics card driver reinstall fixed it rather than a hotkey package reinstall.

[buckalho]

Thanks for your help guys,

But after reinstalling the graphic driver, the problem still persist.

I remember Lenovo posted a .reg fix right under graphic driver about a year ago but it's not there anymore.

Any other suggestion?

[buckalho]

I saw this post on Lenovo forum:
http://forums.lenovo.com/t5/T400-T500-a ... m-p/385113


That guy seems to have the same problem. is it caused by new drivers??

Any idea?

I tried uninstall every single driver (and prevent windows driver auto install) , install all drivers from thinkvantage system update, but no avail.

Anyone know how to fix this problem please?

[Colonel O'Neill]

Curious... Hit Win+X to load the Mobility Center and see if the brightness slider works normally there.

[buckalho]

WIN+X works normally (IE, it increments by 1 for every change). I actually has been using WIN+X to adjust brightness but sometimes, out of reflex, I pressed fn + home/end, and when that happens, I felt frustrated...

Curious... Hit Win+X to load the Mobility Center and see if the brightness slider works normally there.