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NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 554
Message 1 of 9

Yoga 500-14ISK's nVIDIA 920m overloading battery

Hello,

 

after a lot of posts (they were going down and no chance for reply, sorry) about graphics card problem I have finally identifed what's wrong. The problem is that the nvidia card uses too much battery (overloads it, not just faster draining) causing in screen flickering. how do i limit the power of nvidia can use or other fix? or does that mean faulty battery?

 

EDIT: Happens on battery <20% even with nvidia disabled. I blame battery.

NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 511
Message 2 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

The battery voltage is average 7.8 v but i saw somewhere it should be 11.1. Is it normal?

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 470
Message 3 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

Can you try following the instructions on this page and see if it helps?

https://support.lenovo.com/ca/en/solutions/ht500364

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
NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 459
Message 4 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

Nothing. I visited every page about nvidia flickering, all drivers are up to date. Power Saver power plan seems to reduce flickering.

The battery is 7.4 v one. Should I replace it with a 11.1 v one?

PS: Following instructions? What instructions? there are just drivers and instructions for specific devices. 

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 443
Message 5 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

If you avoid powering up the NVIDIA card, the screen doesn't flicker then?

From an eBay seller , the battery says it should have a nominal voltage of 7.4 V:
http://www.ebay.ca/itm/New-OEM-Genuine-Lenovo-Yoga-500-Battery-L14M2P21-/322434184498?hash=item4b129...

So at the very least your battery is operating at normal voltages. I'm not sure if the 11.1 V applies to the Yoga 500 battery.

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
NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 438
Message 6 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

With Nvidia the flickering starts around 60%. With Intel HD only it starts at 20%.

And that only happens in games.

About the battery: A ha! Yoga 500 has 2 battery types to choose. The link you sent me is 30wh one. There are also 45wh batteries. My latop is an exhibition one and it has 2 years. I think replacing the current battery (30wh) with 45wh one could help. That's because 45wh ones are 11.1 v.

NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 415
Message 7 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

lmao that was cpu

 

i limited it to 50% and everything fine

but it's not perfect

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 397
Message 8 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

Interesting; though I would still consider that to be unexpected behavior.

Lowering the CPU maximum multiplier will also lower the peak power consumption drastically, which may be what you're seeing.

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
NsNidPL
Serial Port
Posts: 53
Registered: ‎06-09-2017
Location: PL
Views: 375
Message 9 of 9

Re: Yoga 500-14ISK's nVIDIA 920m overloading battery

I've connected my laptop to TV via HDMI and only laptop screen flickers. No. I will buy an 11.1v battery.

 

Also:

http://www.batteryupgrade.pl/shopBrowser.php?assortmentProductId=22673941&shopGroupId=96492254&track...

 

So, 11.1v APPILES to Yoga 500.

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