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62 Posts

11-14-2020

Turkey

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  • Message 171 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-03, 17:24 PM

well lets try once again :)

maybe something went wrong with system updates.

Bertil, how is ur system still?

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18 Posts

10-04-2020

United Kingdom of Great Britain and Northern Ireland

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  • Message 172 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-03, 17:52 PM

I still have screen glitching on Intel driver 9079 and 20H2. It's not as bad as it was previously, it doesn't seem to last as long, but it's still an issue that is present for me.

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62 Posts

11-14-2020

Turkey

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-03, 21:45 PM

Yesterday it was problem for me too. I erased some of those optional updates about lenovo system etc and then reisntalled 7463 driver on lenovo c940 support page. Later i updatd to the driver to the latest one with intel's driver update agent. It seems the problem solved again.

 

One of the utility or system update has an invisible fight at the background maybe... dont know...

 

If only the manufacturer had been in touch with us as they should, we would solve this issue earlier. But no they have to be silent :) Let them to be like that. In the end of this story we will see whats gonna happen. Fix or refund... Both is okay with me.

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49 Posts

10-03-2020

Norway

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  • Message 174 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-04, 15:51 PM

on the 6th day. no problems at the moment.

 

on the latest offical 27.x

 

(additional updates not installed,, see prev post)

 

there is also an 29.x version around using wddm 2.9 (Windows Display Driver Model). its available for the insider prev program for win10 and win10x

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62 Posts

11-14-2020

Turkey

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  • Message 175 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-04, 16:41 PM

today i was crazy enough to reinstall windows ( clean install with format )

I first installed the latest graphics driver 9079

Then step by step i installed other drivers  from support page of the product. I wanted to see if any of them is fighting with graphics driver at background...

In every step i checked the issue of flickering. No clues.

Its just solved like yesterday.

 

Interesting issue... :)

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62 Posts

11-14-2020

Turkey

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Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-05, 5:49 AM

A new version is released for graphics driver. 9126.

Just installed and started another trial period. For half an hour, so far so good

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49 Posts

10-03-2020

Norway

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  • Message 177 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-05, 15:31 PM

yes, lets see what 9126 will bring to the world. running now for 5 min :)

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4 Posts

12-19-2020

Canada

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  • Message 178 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-05, 15:51 PM

I'm still good with the "beta" Intel DCH graphics driver version 9077

 

I never tried the 9079 driver ... and I've only enabled HDR on my laptop once (right after I bought it) ... so I have not tested HDR on this driver version, and I have no plans to do so (i don't really care if functions that I never use are broken or not).

 

Just to recap, my laptop is the Lenovo Yoga C940, i7-1065G7, 16GB RAM, 1TB SSD, 3840x2160 4K screen, etc.

 

Maybe you guys should try the same 9077 driver as me. I've been using it for ... 2.5 weeks ... without ANY flickering issues WHATSOEVER.

 

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62 Posts

11-14-2020

Turkey

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  • Message 179 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-05, 16:55 PM

Beta was fine for a while but later it did the same issue again on me. after some days.

latest one seems fine for 1 day. 9079 was also fine.

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12 Posts

12-25-2020

Netherlands

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  • Message 180 of 300

Re:Lenovo Yoga C940 screen glitches, flickering, flashing

2021-01-06, 8:18 AM

Sad to hear some are still having issues!

Mine is still running smoothly after 10 days.

Altho I haven't installed the latest windows version, the Intel 9079 works fine!

I actually don't dare to install the latest windows update when reading all this... 

I did turn off hdr btw, it caused a weird brightness adjusting when opening white menus on a darker background and in videos when watching Netflix. 

Good luck all! 

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