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09-24-2019

CH

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Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-09-24, 7:01 AM

I have a thinkpad X1 type 20MF and when I used my external monitor it's so slow that I have the feeling that my entire brain is slowed down.

I'm up to date according to Lenovo Vantage.

 

I'm using it at work. I do not play games on it. I observe the slow refresh rate problem with only the file explorer window, or firefox. I tried with both a Full HD and 4K resolution. It's the same.

I'm using the dock (USB-C dock). If I connect the external display without the dock I still face the issue.

 

EDIT: I've observed that the issue is happening only if I display on external screen only. If I duplicate the content on both screens, or if I extend the desktop to the screen 2 it's fine.

 

I'm really considering returning it.

 

Moderator edit: Added detail to Subject.

 

 

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11 Posts

07-03-2019

SG

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Re: Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-09-25, 7:28 AM

Hi RawBean,

 

Some of us did encounter similar issues with external displays and had to disable/enable the UHD 630 display adaptor for the X1E to work properly.

The Lenovo updates did not solve the issue.

 

https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-extreme-screen-lag-on-quot-second-screen-only-quot/m-p/4530137

Perhaps you want to test it out if it works for you?

 

 

 

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31 Posts

10-24-2016

PL

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Re: Slow refresh rate (~5 fps) with external monitor [X1 Extreme Gen 1]

2019-10-01, 7:08 AM

see:

 https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-extreme-screen-lag-on-quot-second-screen-only-quot/m-p/4539669/highlight/false#M105707

 

https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1E-struggling-with-external-4K-monitor/m-p/4537795#M105631

 

there is a workaround for this, see killing DWM process and creating shortcut for it

 

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