08-27-2019 03:02 AM
Hi, it's a similar issue to the one described here:
I'm having a T480 instead, but also Intel 620UHD graphics...attached are two monitors, one via HDMI, one via USB-C. Has been working like that for months now. Out of a sudden, this morning, it's just one of them which gets recognized - if I pull out the HDMI-cable, the USB-C one shows up in the display properties, as soon as I plug the HDMI cable back in, the USB-C one vanishes and only the HDMI one is showing. No updates were installed recently.
What I tried so far: uninstalling the display driver and installing the latest from Lenovo - no change.
Updating the driver to the latest one available from Intel (not validated for Lenovo) - 126.96.36.19900 - no change.
Went into BIOS and changed the preferred display adapter (internal or external) - no change.
Various reboots, un- and replugging - no change.
Any idea, anyone?