09-26-2018 01:05 PM
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).