08-07-2018 01:52 PM
I powered my T470p on this morning after a month vacation, and after updates my external monitors no longer work.
On powering my machine on Windows Update ran, Lenovo Update prompted me for a ME BIOS updated, I rebooted, external monitors came up.
But after I undocked to go to a meeting, came back, redocked, the external monitors no longer show up.
I connect using an ultra dock 170W that is connected to DP to monitor 1 daisychaned to monitor 2.
On cold power up I see the lenovo logo on one external display, but when windows boots no external monitors.
I treid ctrl + shft + win + b that sometimes works, but nothing.
Seems like some update broke the dock and DP.
08-08-2018 10:28 AM