08-10-2017 05:34 PM
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:
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"
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.