This is an elderly Thinkpad that I keep as a spare or a loaner. Last week I was asked for it, so I installed the current crop of updates for Linux Mint.
Soon after I delivered it, they told me that they were unable to log-in; when I checked, I too was told 'Invalid password', so I simply took it home and reinstalled Mint, and for the moment it is running happily enough.

I did notice that while I was trying to log-in, and while the re-installation was proceeding, that a red light had appeared in the top right-hand corner of the bezel (photo attached). When the laptop was restarted with the new installation it did not reappear.

I would simply like to know, what does the light signify? I had never even noticed it was there, and it does not appear on my later model Thinkpad.

Thanks!

Attached Thumbnails

 

Possibly the "Keyboard light" indicator?

Just a guess.

Play Bonny!

Er, the ThinkLight indicator would be the fact that the light itself is on.


Any official indicator is going to be mentioned in the service manual, but there's no mention of anything in that corner, nor of anything red (all status lights are either green or orange).

The thing in the image looks more like a piece of reflective ribbon than a bevel-mounted light.

What about an image taken during daylight without flash, and with that corner in focus?