After auto update to windows 10 fall creators update the extended screen mode doesn't remain set nor does it enable properly at first.
the Dell Inspiron 1525 (32bit) has a mobile Intel express 965 CHipset. The driver that was loaded (Microsoft Corporation WDDM 1.1 )
Driver version 8.15.10.2697 provided by Intel published by Microsoft.
The Inspiron has a VGA port which on my system connects to a HP-LA2405 1920/1200 monitor.
Since displays were working before the Windows 10 Fall creators update, I believe the update tossed out the original Vista driver and put the one mentioned above in its place.
Symptom:
On boot monitor not enabled.
Using Display manager : MultipleDisplay mode:
If I choose "extend these displays" the external monitor will do nothing.
If I choose to Duplicate then the external monitor does as expected.
If I change form duplicate to extended the external monitor does as expected. and all works fine.
BUT
After reboot all setting is lost and I must go through the process of duplicate then extend again.
Is there a workaround or script to maintain this setting?
Should I go back and load the vista driver?
Or is this a Windows 10 OS issue and would retreating to an earlier OS version get extended monitor function back?
PS: Intel inspection and driver update utility found nothing.