Dell Display Manager 2.0 command line documentation

DDM2.0.md

Dell Display Manager 2.0 Command Line

Decompiled DLL with ILSpy to identify various commands.

Most commands can be found in DDM2._0_UX.CmdBackground.cmdService_DoWork

Write commands can be prefixed with int:command to specify which monitor to send the command to.

.\DDM.exe /0:writebrightnesslevel 50

Read command output is only shown in the debug console.

Debugging Console

Used to show the output of various read commands

.\DDM.exe /console start

Commands

.\DDM.exe /console start Opens DDM Console

.\DDM.exe /readbrightnesslevel Reads the monitor brightness level

.\DDM.exe /writebrightnesslevel Sets the monitor brightness level

.\DDM.exe /readcontrastlevel Reads the monitor contrast level

.\DDM.exe /writecontrastlevel Sets the monitor contrast level

.\DDM.exe /readcapabilities Read monitor capabilities (in hex)

.\DDM.exe /readsupportedcontrols Read monitor supported controls (in hex)

.\DDM.exe /writecolorpreset Write color presets

.\DDM.exe /readcolorpreset Read color presets

.\DDM.exe /readorientation Read monitor orientation

.\DDM.exe /writeorientation Sets monitor orientation

.\DDM.exe /readmonitoractivehours Read monitor active hours

.\DDM.exe /writeactiveinput

.\DDM.exe /readactiveinput

.\DDM.exe /writepower

.\DDM.exe /writeosdlanguage

.\DDM.exe /osd

.\DDM.exe /readedid

.\DDM.exe /writeuc

.\DDM.exe /readmax

.\DDM.exe /readprivacy

.\DDM.exe /writeprivacy

.\DDM.exe /readfirmwareversion

.\DDM.exe /writevolume

.\DDM.exe /readvolume

.\DDM.exe /autocolorpreset

.\DDM.exe /swapvideo

.\DDM.exe /swapusb

.\DDM.exe /writesubinput

.\DDM.exe /writepxpmode

.\DDM.exe /writepxp

.\DDM.exe /readcontrol

.\DDM.exe /increasecontrol

.\DDM.exe /decreasecontrol

.\DDM.exe /writecontrol

.\DDM.exe /readpossible

.\DDM.exe /autosetup

.\DDM.exe /readmanufactureddate

.\DDM.exe /writemonitorpower

.\DDM.exe /readdisplaymode

.\DDM.exe /writeoptimalresolution

.\DDM.exe /readtiming

.\DDM.exe /readassetattributes

.\DDM.exe /log

.\DDM.exe /savediagnosticreport

.\DDM.exe /assetreport

.\DDM.exe /inventory

.\DDM.exe /surveyonly

.\DDM.exe /readdecodededid

.\DDM.exe /countmonitorsci

.\DDM.exe /monitornumber OR countmonitors

.\DDM.exe /usbpassthrough

.\DDM.exe /lockupdate

.\DDM.exe /noupdate

.\DDM.exe /screennotification

.\DDM.exe /lockrorate

.\DDM.exe /autostartup

.\DDM.exe /powernap

.\DDM.exe /colormanagement

.\DDM.exe /writeapplanguage

.\DDM.exe /telemetry

.\DDM.exe /writeealayout

.\DDM.exe /writeimportpermission

.\DDM.exe /displaymodel

.\DDM.exe /writeloglevel

.\DDM.exe /liveupdate") && ApplicationStartUp.Ota != null)

.\DDM.exe /rescan to refresh the connected devices -Thanks @rtxbae!

Some examples of using the utility on MacOS to enable picture by picture, thanks @sepl2604!

/Applications/DDPM/DDPM.app/Contents/MacOS/DDPM /writepxp pbp-2h-fill USB-C HDMI1 Activate 50-50 PBP

/Applications/DDPM/DDPM.app/Contents/MacOS/DDPM /writepxp off Turn off PBP

I got the new Dell U4924DW which supports a feature called "Screen Partition". This splits the ultrawide screen into 2 virtual 27" Monitors which is great during Teams meeting to share the desktop.

Does anyone have an idea how to Switch this mode using DDM or CLI? I did not make it happen using DDM but maybe there is some way using CLI (Console)

@heinrichmichael Hey, Did you get the CLI for the same, I am kinda searching for the same. Too much physical navigation..

I have two monitors connected. How to specify I want to switch the input of only one of them?