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sullyc3po
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Posts: 15
Registered: ‎01-08-2018
Location: US
Views: 86
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T470 _T470s connecting to external video using HDMI causes system crash or no video display

We have T470 (20JM) and T470s(20JS) in our environment. Both models are having a problem connecting to external displays using HDMI

 

Intermittently and sporadically the screen goes blank. It does not matter what order I turn on the devices or connect the cables. Randomly the screen will go black - sometimes the image comes back within a few seconds; sometimes the image blinks on and off for up to a minute; sometimes the image is steady and the monitor is usable for an hour or two; sometimes the image stays off for so long (about 30 seconds) that I get a "No Signal Detected" message from the monitor, only to have the image return (sometimes within seconds, sometimes within minutes, sometimes within hours).

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