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49 Posts

10-03-2020

Norway

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-20, 11:33 AM

to all new members

 

PLEASE READ OR SEARCH IN THIS TOPIC. THE ANSWER IS THERE MORE OR LESS

 

UPDATE TO THE LATEST GFX DRIVER FROM THE INTEL SITE. LENOVOS DRIVERS ARE FROM THE STONEAGE AND DO NOT WORK ON LATEST WINDOWS UPDATES.

 

This have more or less solved the problem for us that brought this up and used alot of time on this.

If its not solved it might be a hw problem and you have to send it in. It might even be lack of knowledge and you have messed up the machine yourselfe.

 

Lenovo just pm me where to send the checks for the workinghours.

 

And no, lenovo do not repsond.

 

Logging out........

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3 Posts

09-06-2020

Sweden

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-20, 18:19 PM

Thanks to Bertil78 and everyone else in this thread.

 

I've had this issue for a couple of months but didn't think to look here until after I put in for a warranty repair.

 

I tried reformating with both a clean windows install and Intel-drivers, and then with a Lenovo Recovery Media installation and the old Lenovo Intel-drivers. Both had the same problem, didn't think to try the beta drivers, so I assumed it was a hardware error.

 

Since installing the beta driver from Intels website I haven't had any issues. It's only been a day though, so I'm not 100% confident in success yet. Finger's crossed it is solved now though.

 

 

Unacceptable that it took 5 months for a Lenovo representative to acknowledge the issue in this thread though. My next laptop will not be from this company.

 

/Elias

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3 Posts

03-18-2019

United States of America

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-22, 3:56 AM


Change brightness automatically when lighting changes option not available yoga c940

How to disable Adaptive Brightness ?

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152 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

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  • Message 274 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-22, 10:00 AM

There are settings in the Intel display panel

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1 Posts

03-23-2021

United States of America

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  • Message 275 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-23, 16:45 PM

I have the Yoga C940 with an NVIDIA GeForce GTX 1650. Installing new NVIDIA drivers resolved this flickering problem for me.

 

Just sharing in case it helps anyone still experiencing the issue. I forgot that I had the upgraded video card and was getting frustrated when the Intel driver upgrade wasn't working for me.

 

 

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1 Posts

03-25-2021

United States of America

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  • Message 276 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-03-27, 20:28 PM

It solved the problem for me as well. The Intel website is awesome. It scanned my hardware and determined which drivers needed to be updated, including the video driver.

I am flabbergasted that Lenovo couldn't come to this remedy for us on their own.   They are still scratching their heads.

 

The intel website is:

 

https://www.intel.com/content/www/us/en/support/intel-driver-support-assistant.html

 

 

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6 Posts

04-01-2021

United States of America

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  • Message 277 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-04-01, 17:47 PM

Yes! I have the same issue. The image you shared is exactly what happens to me, along with the (sometimes) black screen that follows. It lasts 1/2 second or 10 seconds. As if my computer is temporarily seized by an intruder. 

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6 Posts

04-01-2021

United States of America

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  • Message 278 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-04-01, 18:15 PM

Ugh! Lenovo! I'm on a C940-14IIL. It's brand new, just a few months in use. I'm experiencing the same issues reported here: a small slice of the screen clones itself and takes over the screen, flickering and interrupting whatever I'm doing for several seconds, sometimes followed by a black screen. It's been happening more frequently of late. This laptop was finally provided to me by Lenovo after my LAST brand new C940 had issues that could not be resolved after multiple attempts at mail-in repair. These posts do not fill me with hope. I'm afraid I'm going to be purchasing a new laptop and saying goodbye forever to Lenovo. What a rip-off. FIX THIS, LENOVO!!!

 

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6 Posts

04-01-2021

United States of America

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  • Message 279 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-04-01, 18:20 PM
Thank you.
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3 Posts

09-06-2020

Sweden

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-04-01, 18:26 PM
Update: Not a single glitch since I updated to the beta driver 2021-03-20. Before that it happened on and off several times a day.
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