07-09-2017 02:13 PM - edited 07-10-2017 07:08 AM
Having an issue with my X1 Yoga running Win10 64-bit and all firmware & drivers are up to date.
I often plug in an HDMI screen to my machine and when I do and step away for a few mins the screen goes blank to save power etc. When I return and click the mouse or hit a key the backlight on the laptop comes back on but no image is displayed on either the laptop nor the HDMI monitor. If I unplug the HDMI cable then the laptop screen comes back perfectly and then I can plug the HDMI back in and get the image back on my larger monitor.
This seems much different issue then the "blank screen" I read up on and appears to be a detecting from sleep state issue in the driver etc. Anyone else have this? Any fixes for this as I'm plugging the HDMI in/out/in 5 times a day or more... This never occured in the past so appears to be an update issue.
07-13-2017 07:35 AM
Updated the Graphics 520 driver via device manager to 126.96.36.19978 of 5/17/17 which is different than what you get from Lenovo updates and it appears to be back to normal so far. It did require a reboot but this was just an update, no need to uninstall and reinstall.