05-24-2019 07:53 AM
Hi all, my lock screen and blank screen timeouts do not work when my Windows 10 Pro Lenovo ThinkPad X1 Carbon 5th Gen laptop 20HRS15800 is connected to the Lenovo USB-C docking station 40A9. If the laptop is not docked, the lock screen and blank screen timeouts work just fine and the screen goes off as expected. When docked and the timer expires, however, the external monitor and laptop screen briefly turn off for about 1 second, but both screens come right back on when they should not.
I've googled and tried numerous suggestions for fixing this problem, which were mostly about double checking that the windows settings screens and the registry keys match up (Windows 10 has made a mess of the power settings, but I carefully checked and rechecked them to be sure they are set to go off on battery and AC at the same time). I've also updated and reinstalled display and monitor drivers, updated and reinstalled the docking station drivers and firmware, checked and rechecked the lock screen and blank screen timeouts in the Windows 10 settings interface and the registry, disconnected everything from the dock except for the external monitor (a Dell U2415 connected over the normal display port cable), and made sure that Windows and an all other Lenovo drivers are current, but I'm still having the problem.
Has anyone solved this problem? Some help here would be much appreciated.
05-24-2019 09:09 PM
Thank you for using the community forums.
Let's isolate the issue. Could you try to disconnect all the peripherals connected to the Thinkpad P50 laptop, leave the docking station connected and check if the screen will lock.
Let us know how it goes.