12-18-2014 02:38 PM
Hello: I recently recieved my new business computer from our company offerings. I got a T440p with the Pro Dock station. Previously I had something similar that I got two years ago. On the old system I was able to connect three monitors to the docking station (VGA, Digital, Display Port) and I could use any two at a time.
On the new system, if I plug anything into Display Port (even with that monitor turned off), the Digital port becomes disabled. So I can't seem to use my "any two of three monitor" scheme without unplugging in one and plugging in another to the docking station.
Is there another solution for this?
06-08-2015 03:06 AM
According to this: http://support.lenovo.com/us/en/documents/pd029622 I also have a Pro-dock (judging from the port layout) and it should be possible to use 3 monitors in any combination.
But I can't get windows to activate VGA, DVI + Display Port.
I got VGA + Mini Display Port + DVI working, but not reliably: When undocking and using the laptops build-in monitor, the multi display configuration can become invalid. Getting this configuration to work is a hassle, as multiple tries are needed and the configuration information in the Intel configuration dialog is wrong and the one in windows is ambiguous.
Configuring Display Port + VGA works with-out problems. Display Port + DVI is difficult to achieve.
Any help is approciated.
07-07-2015 12:01 AM - edited 07-07-2015 12:04 AM
When rereading the provided link closely (see above), it seems that the only supported configuration for a ProDock is *MINI*-DisplayPort + VGA + DVI. So I settled for this configuration
Unfortunately, activating this configuration sometimes is a hassle:
- When using the stored configuration through "Options -> Profile -> Displayprofile -> config" I often get: This configuration is not supported in this setup, even if the monitor configuration has not changed. This might happen, if I used the laptop in a different configuration at another place, but I have not been able to nail down the circumstances, when the configuration becomes "invalid".
- They only way to regain the configuration is then to disconnect the monitors and reconnect them in the correct order.