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DJ51
Fanfold Paper
Posts: 21
Registered: ‎05-28-2018
Location: DE
Views: 1,723
Message 21 of 75

Re: Bad CPU Performance X380 Yoga

From my side I can update this, that we have sent a X380 to the Lenovo Labs to analyze the issue. According to my contact there, they were not able to reproduce the issue at any new x380 in the lab, however I was able to reproduce the problem on all X380 i got in my hands. No matter if straight out of the box with a stock image, or with a fully patched stock image, or with our own Enterprise Image. But I have only tested on Windows 10 1703 and 1709.

 

By this issue also only the X380 is affected. All other Thinkpad models i got into my hands work fine and supply sufficent CPU Power over hours of full load. T480s, X1 carbon, P51, T470s, 370 yoga, all work without any issue.

sranjeet
Fanfold Paper
Posts: 9
Registered: ‎07-31-2018
Location: IN
Views: 1,707
Message 22 of 75

Re: Bad CPU Performance X380 Yoga

I contacted local lenovo support through our corporate IT support . They suggest changing the motherboard . I am not sure i will receive a new motherboard or a refurbished one. I can wait if there is a driver or BIOS etc. fix for this. Please suggest.
jonnypoe
Punch Card
Posts: 14
Registered: ‎03-08-2018
Location: CA
Views: 1,668
Message 23 of 75

Re: Bad CPU Performance X380 Yoga

Yep, I'm with you there DJ51. I'm seeing this on all X380s I've tested. Those who use a lot of apps this seems to affect the most.

I've opened a customer satisfaction case with my account reps, hopefully I'll get farther along. Just waiting to be contacted back.

 

I've attached a word document with my findings.

canarslanm
What's DOS?
Posts: 1
Registered: ‎08-22-2018
Location: US
Views: 1,632
Message 24 of 75

Re: Bad CPU Performance X380 Yoga

Hi,

 

I have same issue in my x380. Any news about new BIOS?

 

Thanks,

 

MC

sranjeet
Fanfold Paper
Posts: 9
Registered: ‎07-31-2018
Location: IN
Views: 1,618
Message 25 of 75

Re: Bad CPU Performance X380 Yoga

@jonnypoe does the 3.5 mm audio jack work ? do you face any issue with audio output ? Mine doesn't work and I get audio only from internal speakers.
jonnypoe
Punch Card
Posts: 14
Registered: ‎03-08-2018
Location: CA
Views: 1,612
Message 26 of 75

Re: Bad CPU Performance X380 Yoga

Hi @sranjeet,

I have no problem with the 3.5mm jack.

This thread is about CPU performance with the X380 Yoga. Could you please start a new thread for your troubles, or perhaps work with your corporate IT team please.

Thanks.
sranjeet
Fanfold Paper
Posts: 9
Registered: ‎07-31-2018
Location: IN
Views: 1,594
Message 27 of 75

Re: Bad CPU Performance X380 Yoga

sure  , thanks. Lets track this thread for CPU performance only.

rMx
Paper Tape
Posts: 2
Registered: ‎08-28-2018
Location: DE
Views: 1,506
Message 28 of 75

Re: Bad CPU Performance X380 Yoga

Hey your Cinebench score is really bad. I have undervolted my x380 i5 8250u quite a bit and got scores around 640. Maby you should try this. I also noticed power throttling after heavily using the intergrated GPU. Its a bit odd but when AC plugged in the BIOS always forces the CPU to run at max CPU clocks even on idle. Also you cant change Power targets while using XTU the Lenovo drivers always reset the settings. Maby this threads will help you: https://www.notebookcheck.net/More-performance-and-quieter-fans-with-Intel-XTU-Undervolting-the-Thin... https://www.reddit.com/r/Surface/comments/63orso/solution_for_undervolting_settings_not_sticking/
DJ51
Fanfold Paper
Posts: 21
Registered: ‎05-28-2018
Location: DE
Views: 1,487
Message 29 of 75

Re: Bad CPU Performance X380 Yoga

Hi rMx,

 

I get your point, if I would use the X380 Yoga as a personal device I would do the same. But this kind of tweaking is a bit unuseable in a Enterprise IT department with 1000+ devices... Smiley Happy

 

 

rMx
Paper Tape
Posts: 2
Registered: ‎08-28-2018
Location: DE
Views: 1,477
Message 30 of 75

Re: Bad CPU Performance X380 Yoga

Haha, I didnt noticed that. My solution isnt made for enterprises ;D.

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