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06-24-2019

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ThinkPad X390 display goes black for few seconds when plug/unplug power supply

2019-06-24, 8:38 AM

If you plug or unplug power supply, the screen goes black for few seconds. I noticed it working on a train connected to the AC power: every power failure the display turned off for few seconds. Very very annoying issue! I hope that an upcoming driver/firmware update could fix this. Does anybody ever experienced this issue? I'm quite sure this is not an hardware failure.

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Re: ThinkPad X390 display goes black for few seconds when plug/unplug power supply

2019-06-24, 10:01 AM
 

Andy

 

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Lenovo eServices

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Re: ThinkPad X390 display goes black for few seconds when plug/unplug power supply

2019-06-24, 16:53 PM

Hello and welcome,

 

This comes up a lot, and may be "normal" if your power plans are set to run the display at different refresh rates on battery and AC.  The display takes a second or two to accomodate the change.

 

If that's the issue you can set the refresh rates to be the same.  Where seems to be a moving target.  I've got 1903 on my X390Y and the setting is (currently...) in Advanced Display Settings -> Display Adapter Propreties for Display 1 -> Monitor tab.  You have to set the rate in each mode.  ISTR that previously one could change both in the same config page, and it may still be there somewhere...

 

Z.


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