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mattcoll9
Paper Tape
Posts: 3
Registered: ‎04-18-2017
Location: AU
Views: 682
Message 1 of 1

T430S on thinkpad mini dock plus series 3 - stop re-detecting monitors on redocking

Have been happily running windows 10 - with dual monitors, but since a recent update, the system once re-docked will no longer re-detect that it using different monitors.

 

Previously i could use it:

1. Un-docked - at 1600 x 900

2. then when i put it to sleep

3. Then dock it and resumed:

     it would

     a) switch to 1920 x 1080, and

     b) also detect and display on the second monitor - no intervention required.

 

Now, it remains in it's prior "state" (it neither changes state nor outputs to the second monitor) - only outputting to the first external monitor - but at 1600 x 900.

 

Thus since a recent change, it is not "re-detecting" the "change in state" on resume, ONLY when i now do a full restart.

 

The update may have been a Windows update, but on the same day i also installed a Toshiba Dynadock - with dual display port support.

 

I have used the Lenovo system update to update the driver - now it is at 10.18.10.4425 - and as the driver loaded the monitors re-detected, and corrected - but later the problem is persisting.

 

Does anyone know how to force the driver to re-detect on resume not just on restart? Or is this a "consequence of doing things in a certain order"

 

System:

Lenovo T430s laptop -

HD Graphics 4000  version 10.18.10.4425 (from Lenovo System Update)

UPDATED: to 10.18.10.4653 - 7/4/2017

with a Lenovo ThnikPad Usb 3.0 Pro Dock (dual HDMI/DVI ports)

dual BenQ GL2450 monitors.

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