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T440p keyboard backlight issue

T430 and later, plus T530 and later series specific matters only
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Kuzman
Posts: 2
Joined: Wed Aug 02, 2017 2:47 pm
Location: Paris, France

T440p keyboard backlight issue

#1 Post by Kuzman » Wed Aug 02, 2017 2:49 pm

I have a T440p which came with a non backlit keyboard, which I wanted to replace it with a backlit one. After installing the new keyboard the backlight wouldn't come on (i'm using Fn + spacebar, the keyboard has the light icon on the spacebar and the OS shows an icon for the backlight). I tried swapping it out with a friend's keyboard (from a t450s which was replaced due to a damaged key) but without any luck.

Could this be an issue with the motherboard or controller? What are my options?

Thanks!

Thinkpad4by3
ThinkPadder
ThinkPadder
Posts: 1589
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: T440p keyboard backlight issue

#2 Post by Thinkpad4by3 » Wed Aug 02, 2017 2:55 pm

My prediction is that its just a regedit fix. Probably is similar on how an regedit fix is needed to enable physical buttons when swapping X250 touchpad in X240.
Probably should be Thinkpad16by10.

Looking For: 386 laptop, IBM or not.

Kuzman
Posts: 2
Joined: Wed Aug 02, 2017 2:47 pm
Location: Paris, France

Re: T440p keyboard backlight issue

#3 Post by Kuzman » Wed Aug 02, 2017 3:47 pm

Could you, please, point me in the right direction?

It doesn't work with either linux nor WIN10 (a clean install). This page https://support.lenovo.com/fr/en/solutions/ht104656 also states that it's a hardware feature. It doesn't even light up when in BIOS.
I would love to find a software fix for this, but it seems less and less plausible at this point.

WVZR1
Freshman Member
Posts: 114
Joined: Sat Oct 08, 2005 7:34 pm
Location: Charles Town, WV

Re: T440p keyboard backlight issue

#4 Post by WVZR1 » Mon Aug 07, 2017 7:14 am

Kuzman wrote:
Wed Aug 02, 2017 2:49 pm
I have a T440p which came with a non backlit keyboard, which I wanted to replace it with a backlit one. After installing the new keyboard the backlight wouldn't come on (i'm using Fn + spacebar, the keyboard has the light icon on the spacebar and the OS shows an icon for the backlight). I tried swapping it out with a friend's keyboard (from a t450s which was replaced due to a damaged key) but without any luck.

Could this be an issue with the motherboard or controller? What are my options?

Thanks!
My T440 NOT A P is this > "Ctrl" + Spacebar, First function is on, another is BRIGHTER and another is OFF.
T60 2007-GCU T7200 2.0GHZ/2.0G 3945ABG XP (Bluetooth & ATI FireGL V5250 by "Brad")

600 2645-A2U used only for "data logging" my 1990 Corvette ZR-1

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