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TinyRK
SCSI Port
Posts: 66
Registered: ‎02-07-2010
Location: USA
Views: 11,596
Message 1 of 90

T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

Situation:

my T410 with i7 and dedicated NS31000 runs on the 9cell battery.

So now I run out of juice and Win7 shows the warning "10% left yadayada...plug in"

 

So now I wait until it is at 9% and plug in the power.

 

What then happens is: the LED backlight of the screen turns off.

You can see the pictures etc on the screen, just w/o the backlight.

Of course you think the backlight is at 0, so you try to crank it up and you can see the bar,

but it is the actual backlight which is turned off.

It is not dimmed.

 

Sending the laptop to sleep, hibernation or rebooting it turns the backlight on again.

 

Can anyone check and try to replicate this?

 

AS OF 11/11/11: the issue still exists: http://youtu.be/zC-KdJQiW0w

4th repair and still not fixed!!!

erik_h
Punch Card
Posts: 92
Registered: ‎01-15-2010
Location: US
Views: 11,522
Message 2 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

There's a setting in power manager, i think, that controls what happens when your system reaches a certain capacity.  one of those options is "dim screen."

 

 You can turn that off if you want.

 

Y

TinyRK
SCSI Port
Posts: 66
Registered: ‎02-07-2010
Location: USA
Views: 11,519
Message 3 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

Again,

the screen does NOT dimm.

The LEDs turn off and I can't turn them on again.

 

The dimming-option is not responsible for this, since even I dimm the screen to 0,

the backlight is still on.

 

 

erik_h
Punch Card
Posts: 92
Registered: ‎01-15-2010
Location: US
Views: 11,502
Message 4 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

"The dimming-option is not responsible for this,"

 

Do you mean that you have checked the option, and tried it, and it doesn't change anything?

 

Or do you mean that you're sure you're right, so you're not going to check/try?

 

sma
What's DOS?
Posts: 1
Registered: ‎02-07-2010
Location: Los Angeles
Views: 11,443
Message 5 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

The same thing has been happening to me on my T410. I can't seem to pin point a specific event that triggers this. It just seems like randomly when I plug in the power while my laptop is on, the backlight turns off.

 

I

mat3y
Blue Screen Again
Posts: 11
Registered: ‎02-08-2010
Location: Slovenia
Views: 11,428
Message 6 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

I must say I have the same problem when I plug in the power. I hope lenovo offer new drivers very soon as this is very buggy.

TinyRK
SCSI Port
Posts: 66
Registered: ‎02-07-2010
Location: USA
Views: 11,410
Message 7 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

 

Do you mean that you have checked the option, and tried it, and it doesn't change anything?

 

Or do you mean that you're sure you're right, so you're not going to check/try?

 

 

Well Erik,

there is a difference between dimming the backlight and turning it off.

So yes, I am sure I am right, but I also checked & tried your suggesions

 

But on the other hand: an option to control dimming should have nothing to do with this. Smiley Wink

Dimming the backlight is: FN+ END, and the Auto-Dim Function/ Option does this.

But I am talking turning-off, which is different to dimming.

 

 

Anyways,

I checked all those options you mentioned.

Nothing.

 

 

Also I am relieved that I am not alone, even though it sounds kind of weird .

wirelesslaptop
Blue Screen Again
Posts: 35
Registered: ‎01-31-2010
Location: CA, USA
Views: 11,374
Message 8 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

Have any of you tried calling Lenovo tech support for your display issue? 

TinyRK
SCSI Port
Posts: 66
Registered: ‎02-07-2010
Location: USA
Views: 11,369
Message 9 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

No sir,

I did not call Lenovo yet.

But I might have to.

I posted here to see if I am alone, but seems like I am not the only person with this issue.

 

 

wirelesslaptop
Blue Screen Again
Posts: 35
Registered: ‎01-31-2010
Location: CA, USA
Views: 11,363
Message 10 of 90

Re: T410 - LED backlight turns off as soon its plugged in and battery threshold warning pops up

I can assure you that Lenovo support is excellent. It's handled by the same original IBM division in Atlanta Georgia. They are there for you 24/7 every day. I would not hesitate to give them a call, as it's also beneficial for them to hear from you. If it's not reported, they won't be aware of it. Many things like this do not show up in the very extensive testing that Lenovo does before releasing a new model. Therefore we are helping them by reporting these issues. Please let us know the outcome of your call....Smiley Happy

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