cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
andrican
Paper Tape
Posts: 3
Registered: ‎02-22-2013
Location: Singapore
Views: 849
Message 1 of 7

T420i screen flickering when brightness low and only for certain color

Dear all,

I have bought new thinkpad T420i (4180) on mid of February 2013 form Indonesia without OS.

After I came back to Singapore, I tried to install and everything was great, 

but I got issue with LCD screen flickering when I opened Acrobat Reader 9 with background dark gray color.

Only dark gray color is flickering.

I have opened Visual studio professional 2010 with blue color also got same issue.

I have opened website with green color also got same issue

I don't have this issue when maximum brightness full scale.

 

I have tried this solution but can't help.

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T410-T420-Screen-flickering-randomly-screen...

 

Have any one similar issue? and how to solve it?

I don't want to set brightness to maximum scale.

 

 

thanks

 

Best regards

Andrican

 

 

Retired Support Specialist
Posts: 613
Registered: ‎12-11-2012
Location: raleigh, nc
Views: 821
Message 2 of 7

Re: T420i screen flickering when brightness low and only for certain color

Hi andrican,

 

What OS did you install?

Have you updated the drivers for your chipset, display, graphics, and BIOS?

Is ActiveX updated?

 

Be AWESOME Everyday!

Donate KUDOS and Click "Accepted Solution"

Did someone help you today?
Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"

This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
andrican
Paper Tape
Posts: 3
Registered: ‎02-22-2013
Location: Singapore
Views: 804
Message 3 of 7

Re: T420i screen flickering when brightness low and only for certain color

Hi dmckenzies,

 

My Laptop is running on Windows 7 Pro 64bit, 8GB Ram, VGA Intel HD 3000 on board

Yes, I have updated all drivers by Thinkvantage software (System Update) and updated bios version 1.43.

And the problem still there.

 

Which AxtiveX need to update?

 

 

Thanks For your replay

 

Best Regards

Andriyono Candra

Retired Support Specialist
Posts: 613
Registered: ‎12-11-2012
Location: raleigh, nc
Views: 794
Message 4 of 7

Re: T420i screen flickering when brightness low and only for certain color

andrican,

 

Here is a driver update for the display.

"You can obtain an accurate color representation with the Windows ICM file"

(direct from the 'readme' file)

Even though Microsoft has ActicveX as a part of their OS, you can still download the latest software from a third-party developer.

See if both of those help your color issue.

 

 

 

Be AWESOME Everyday!

Donate KUDOS and Click "Accepted Solution"

Did someone help you today?
Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"

This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
andrican
Paper Tape
Posts: 3
Registered: ‎02-22-2013
Location: Singapore
Views: 775
Message 5 of 7

Re: T420i screen flickering when brightness low and only for certain color

Hi dmckenzies,

 

My laptop display driver is Thinkpad Display 1366x768 version 4.38. It is same with the link given by you.

I have tried to calibration screen color but the result still same flickering.

 

Best Regards

andrican

Retired Support Specialist
Posts: 613
Registered: ‎12-11-2012
Location: raleigh, nc
Views: 771
Message 6 of 7

Re: T420i screen flickering when brightness low and only for certain color

Hi andrican,

 

Try to start your system in safe mode with networking.

Safe mode will only use the basic processes which will help determine if there are other programs interfering with the displaying of those programs.

The 'with networking' aspect will allow you to test webpages for the same purpose.

If you don't have the issue in safe mode then we move to find out what software is the issue.

If you still have the issue we should have service take a look at it under warranty, or have the contact center send a new unit since it was an out-of-box issue.

 

Be AWESOME Everyday!

Donate KUDOS and Click "Accepted Solution"

Did someone help you today?
Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"

This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 766
Message 7 of 7

Re: T420i screen flickering when brightness low and only for certain color

This happened on my T400 if I was particularly observant. It seemed to be caused by pulse-width modulation on the LED backlight, and it tended to be worse in fluorescent ambient lighting.

Tweak the calibration using Windows 7's color calibration wizard to see if you can get it to become less noticeable.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U

Check out current deals!


Shop current deals

Top Kudoed Authors