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57 Posts

08-12-2015

Slovakia

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Re: Y70 screen (flashing - blinking)

2015-11-20, 15:49 PM

S3a1, yep the problem lies somewhere in power management as I stated before https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Lenovo-Y70-occasional-black-flicker/td-p/2142802

Setting to power saver mode is not solution but I will try setting maximum cpu 99% in power settings in windows. But It could be deep problem with hardware not only software related.

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11 Posts

11-19-2015

UK

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Re: Y70 screen (flashing - blinking)

2015-11-20, 18:31 PM

Yes, you told about that, sry. I just put all setings in pover saver mode same as high performance, except minimum processor state. Works briliant. But if i put 99% in high performance, monitor keeps blink. Dont know why, only power saver mode all works fine. I think there is some problem with voltage, as Intel HD uses processor and when GPU is active, no blink. So maybe low power for processor. Who knows... Lenovo?

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5 Posts

10-31-2015

Poland

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Re: Y70 screen (flashing - blinking)

2015-11-20, 19:07 PM

I dont knew how but after update my y50 from W8.1 to windows 10 the problem was solved (for now ofc) if it back I will let you now. 

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2 Posts

11-20-2015

United States of America

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Re: Y70 screen (flashing - blinking)

2015-11-20, 20:35 PM

Changing the power setting in Window to a maximum processor state of 99% has fixed the screen flicker for me, too. So now the processor has a max frequency of 2.57 GHz, as opposed to the real max of 2.6 GHz. I also noticed if the max state is 100% the processor frequency will go up to 3.5 GHz when plugged in to power.
This leads me to believe the problem lies in the processor drawing too much power resulting in a loss of power for the GPU and therefore a screen flicker. This could be a driver issue for either the CPU or GPU, a BIOS issue, or even a hardware issue/failure. Clearly something about letting the processor go to its full frequency, or above, is causing this problem.
I do not know if Lenovo support is following this thread, but they should look into this and post a response.

 

Also, all of the drivers and BIOS are the latest versions available on Lenovo's support site. None of the updates seemed to fix the problem.

 

EDIT: I have also noticed that the flicker occurs, or worsens when watching videos, viewing gifs, or doing anything graphically intensive. This supports the hypothesis stated above, that the GPU is losing power when the CPU is working at full speed.

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5 Posts

10-31-2015

Poland

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Re: Y70 screen (flashing - blinking)

2015-11-20, 21:40 PM
What O.S. You use ?
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2 Posts

11-20-2015

United States of America

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Re: Y70 screen (flashing - blinking)

2015-11-20, 21:57 PM
Windows 10
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35 Posts

06-27-2015

Egypt

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Re: Y70 screen (flashing - blinking)

2015-11-21, 0:22 AM
Zfergus2, I think you are right
I think Lenovo should respond and explain, freaking issue and bad support !!!
I regret wasting money by Lenovo products !!!!
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12 Posts

06-01-2015

Canada

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Re: Y70 screen (flashing - blinking)

2015-11-22, 6:35 AM

I encourage everyone to take the Ownership Survery at:

http://lenovo.fluidsurveys.com/s/ProductOwnershipForums/

 

And GIVE LENOVO THE WORST RATING possible. That's all Lenovo deserves for this awful product.

 

We need to break down the wall of incompetent 'Tech Support' and ingnorant 'Case Managers'

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35 Posts

06-27-2015

Egypt

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Re: Y70 screen (flashing - blinking)

2015-11-22, 6:53 AM

FADE, Done 

 

I hope they would appreciate their customers 

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4 Posts

11-19-2015

United States

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Re: Y70 screen (flashing - blinking)

2015-11-22, 20:14 PM

I have bios and all drivers up to date, but the problem persists; however, changing the maximum processor state from 100% to 99% has stopped the flashing for now.

 

 

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