Welcome to our peer-to-peer forums, where owners help owners. Need help now? Visit eSupport here.

English Community

Lenovo NotebooksLenovo Yoga Series Notebooks
All Forum Topics
Options

18 Posts

10-04-2020

United Kingdom of Great Britain and Northern Ireland

27 Signins

130 Page Views

  • Posts: 18
  • Registered: ‎10-04-2020
  • Location: United Kingdom of Great Britain and Northern Ireland
  • Views: 130
  • Message 181 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 14:50 PM

Yep, I've just boarded the 9126 train too. Some interesting commentary about the bug fixes:

https://www.windowslatest.com/2021/01/06/whats-new-in-intel-january-2021-gpu-driver-update-for-windows-10/

 

Nothing directly related to our problem, but bugs that manifest as "flashes" are interesting. I suppose we're in a position of hoping that, in fixing a bug they know about, Intel (inadvertently) fix ours as well!

Reply
Options

62 Posts

11-14-2020

Turkey

63 Signins

620 Page Views

  • Posts: 62
  • Registered: ‎11-14-2020
  • Location: Turkey
  • Views: 620
  • Message 182 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 16:20 PM

Update: 2 days intensive usage ( around 16 hours in total) and no issues with the latest version of driver.

 

 

Reply
Options

1 Posts

01-06-2021

United States of America

2 Signins

5 Page Views

  • Posts: 1
  • Registered: ‎01-06-2021
  • Location: United States of America
  • Views: 5
  • Message 183 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 17:33 PM

I have been having this issue for quite some time but lately it is happenning so many times that I called the premier support. There is not consistency with when it happens so dont think the technician lenovo is sending despite my request to replace the device will be able to reproduce. The warranty service said that the technician would replace the screen and possibly the motherboard but based on other responses dont think it will work. The rep was saying its not a common issue, but this post suggests otherwise. Have no choice but to expose myself to the risk of coronavirus with the technician handling the laptop. 

i wish lenovo improved their product or offer recalls with replacemnt, especially diring these times. 

 

DF72A532-85E8-4B63-8EAB-4C383D84DBD8.jpeg B8B1C80D-31EA-47DB-B5CD-21D8862B115D.jpeg
Reply
Options

62 Posts

11-14-2020

Turkey

63 Signins

620 Page Views

  • Posts: 62
  • Registered: ‎11-14-2020
  • Location: Turkey
  • Views: 620
  • Message 184 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 17:44 PM

what version of graphics driver are u using? you can type dxdiag in your start menu and enter. Then select display to see the driver version t the right side.

Reply
Options

152 Posts

04-26-2020

United Kingdom of Great Britain and Northern Ireland

133 Signins

940 Page Views

  • Posts: 152
  • Registered: ‎04-26-2020
  • Location: United Kingdom of Great Britain and Northern Ireland
  • Views: 940
  • Message 185 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 18:11 PM

I'm on driver 7463 with the up to date windows version and no issues. I did install a beta from the Intel site a few weeks ago so that's probably it.

 

Tried running Chrome for a couple of hours last night with hardware accelleration enabled and all OK.

Reply
Options

62 Posts

11-14-2020

Turkey

63 Signins

620 Page Views

  • Posts: 62
  • Registered: ‎11-14-2020
  • Location: Turkey
  • Views: 620
  • Message 186 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 21:44 PM

latest windows version and latest intel graphics driver here and no issues. I guess this is it.

No flashing no flickers. 

 

Clean windows latest version install without Lenovo vantage is also perfect. That software is really useless.

Reply
Options

1 Posts

01-07-2021

United States of America

2 Signins

5 Page Views

  • Posts: 1
  • Registered: ‎01-07-2021
  • Location: United States of America
  • Views: 5
  • Message 187 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-07, 6:33 AM

I have the same issues starting in September 2020, the Yoga C940 was not waking up from a sleep state without a hard restart, so a Support Tech told me to update Bios to fix the sleep issue. Shortly, the blacking out, flickering and repeating task bar filling the screen. After much time and arguments with Lenovo Support, finally convinced them to send the laptop to Depot to fix. After a month, Depot returned the laptop with the screen blacking out, flickering and repeating task bar problem unresolved (actually worse because it happened more frequently and requiring more effort to get it back to a working state) and WORSE, the touchscreen and pen no longer worked! That's right, the Depot sent the laptop back with additional problems. Today, January 6, 2021, a Lenovo Tech (very nice persons) finally showed up at my house to repair the laptop (I have spent countless hours on chat, phone calls and a trail of weekly emails to convince them to address the issues), but his efforts DID NOT fix the non-functional touchscreen and pen issue despite installing new motherboard, LCD and hard drive and reinstalling Windows Recover. I don't know if the blacking out, flickering and repeating task bar problem is fixed because it is hard to test for something that has unknown triggers. To date, Lenovo has replaced a new motherboard twice, the LCD screen twice, the hard drive twice, and Windows OS has been reinstalled at least 4 times...I am convinced that I have a lemon despite paying top dollar for a top-of-line unit. This is my fifth Lenovo, and given the incredibly slow and uncommunicative customer service that has been one of the most frustrating experience, likely last one. I am asking for a new replacement laptop because it does not look like it can be fixed, but I now have to wait for an "escalated Customer Service Rep" to call me in the next three days! This laptop was delivered the end of June, and the I have been experiencing issues since September! TOTAL NIGHTMARE. WASTE OF TIME. DON'T RECOMMEND LENOVO YOGA C940 16 GB 1TB WINDOWS 64-BIT. So disappointing after so many years of positive experiences with other Lenovo laptops.

Reply
Options

49 Posts

10-03-2020

Norway

90 Signins

615 Page Views

  • Posts: 49
  • Registered: ‎10-03-2020
  • Location: Norway
  • Views: 615
  • Message 188 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-07, 16:40 PM

still good here also. Latest official from INTEL website, and Win10 20H2

 

Drivers & Software (intel.com)

 

Reply
Options

6 Posts

12-15-2020

United Kingdom of Great Britain and Northern Ireland

6 Signins

25 Page Views

  • Posts: 6
  • Registered: ‎12-15-2020
  • Location: United Kingdom of Great Britain and Northern Ireland
  • Views: 25
  • Message 189 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-08, 11:06 AM

Just downloaded these and unfortunately flickering started again with 2 hours.......

Reply
Options

1 Posts

01-09-2021

United States of America

1 Signins

0 Page Views

  • Posts: 1
  • Registered: ‎01-09-2021
  • Location: United States of America
  • Views: 0
  • Message 190 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-09, 1:08 AM

This flickering on my screen is driving me insane, and it's getting worse!  Not sure what to do.  Also, battery life stinks.

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete

X

No, I don’t want to share ideas Yes, I agree to these terms

Most Liked Authors

(Last 7 days)

View All