A commant to change the default Display

[trapp]

Hello,
I have a 7" USB monitor (Proximus P16-40921) that I would like to use for service work on pcs without displays. Is there a registry setting that determines which Display is #1 or one that causes Display #2 (my USB display)to be a clone of the default Display #1.

 

[hang-the-9]

Will that display work before Windows can be loaded with the proper drivers? Don't see how it will work when used as a primary monitor.

There are registry settings for Default and Secondary monitors, but they are filled with device ID numbers, I don't think you'd be able to set anything automatically without knowing what the strings are for the model of monitor used.

For example, this is my regkey for default monitor
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\DISPLAY\Default_Monitor\4&574af1d&0&80872100&00&22]
"DeviceDesc"="Default Monitor"
"Capabilities"=dword:000000e6
"ConfigFlags"=dword:00000000
"HardwareID"=hex(7):4d,00,6f,00,6e,00,69,00,74,00,6f,00,72,00,5c,00,44,00,65,\
00,66,00,61,00,75,00,6c,00,74,00,5f,00,4d,00,6f,00,6e,00,69,00,74,00,6f,00,\
72,00,00,00,00,00
"CompatibleIDs"=hex(7):2a,00,50,00,4e,00,50,00,30,00,39,00,46,00,46,00,00,00,\
00,00
"ClassGUID"="{4D36E96E-E325-11CE-BFC1-08002BE10318}"
"Class"="Monitor"
"Driver"="{4D36E96E-E325-11CE-BFC1-08002BE10318}\\0003"
"Mfg"="(Standard monitor types)"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\DISPLAY\Default_Monitor\4&574af1d&0&80872100&00&22\Device Parameters]
"BAD_EDID"=hex:00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\DISPLAY\Default_Monitor\4&574af1d&0&80872100&00&22\LogConf]