Dockingstation Disconnects after Locking Screen

[TheRobotDude]

Hi,

I'm using a Z Book with a USB-C Dock G5 and currently have the following problem:

After locking the screen (Windows + L) the docking station disconnects with the disconnecting chime after approximately 30 seconds. When I log in again, all the windows that have been distributed over the 4 screens (3 external and the screen from the Z Book) are centered in the main screen again, so that I have to reorganize all the windows again. This gets pretty annoying when you have to do this multiple times a day. I couldn't figure out which setting causes this kind of behaviour and I'm not even sure if it's a problem of the docking station or maybe in the energy management settings of the operating system or in the Bios.

Anyone got some experience with this or some ideas?

[TheRobotDude · Accepted solution]

I did some more digging and my initial assumption that the problem got caused by the docking station was just wrong. No wonder my attempts where leading nowhere.

It's actually a behaviour by design of Windows 8 or higher and it's not possible to change this setting in the ordinary graphical user interface. But there is a simple solution, premised you got the necessary administrator rights:

These are the commands you have to type in to the command line:

• powercfg.exe /setacvalueindex SCHEME_CURRENT SUB_VIDEO VIDEOCONLOCK 600
• powercfg.exe /setactive SCHEME_CURRENT

The value 600 is the time in seconds the monitors are staying active while the lock screen is displayed