We have a requirement to set screen resolution to 1280*720 and also have a script to do this task.

The problem is the script runs when execute locally but fails when executed from TS (Failed To Change The Resolution). Could you please help me to solve the issue?

Script used:

Function Set-ScreenResolution {
param (
[Parameter(Mandatory=$true,
           Position = 0)]
[int]
$Width,
[Parameter(Mandatory=$true,
           Position = 1)]
[int]
$Height
)
$pinvokeCode = @"
using System;
using System.Runtime.InteropServices;
namespace Resolution
{
    [StructLayout(LayoutKind.Sequential)]
    public struct DEVMODE1
    {
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string dmDeviceName;
        public short dmSpecVersion;
        public short dmDriverVersion;
        public short dmSize;
        public short dmDriverExtra;
        public int dmFields;
        public short dmOrientation;
        public short dmPaperSize;
        public short dmPaperLength;
        public short dmPaperWidth;
        public short dmScale;
        public short dmCopies;
        public short dmDefaultSource;
        public short dmPrintQuality;
        public short dmColor;
        public short dmDuplex;
        public short dmYResolution;
        public short dmTTOption;
        public short dmCollate;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string dmFormName;
        public short dmLogPixels;
        public short dmBitsPerPel;
        public int dmPelsWidth;
        public int dmPelsHeight;
        public int dmDisplayFlags;
        public int dmDisplayFrequency;
        public int dmICMMethod;
        public int dmICMIntent;
        public int dmMediaType;
        public int dmDitherType;
        public int dmReserved1;
        public int dmReserved2;
        public int dmPanningWidth;
        public int dmPanningHeight;
    };
    class User_32
    {
        [DllImport("user32.dll")]
        public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode);
        [DllImport("user32.dll")]
        public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags);
        public const int ENUM_CURRENT_SETTINGS = -1;
        public const int CDS_UPDATEREGISTRY = 0x01;
        public const int CDS_TEST = 0x02;
        public const int DISP_CHANGE_SUCCESSFUL = 0;
        public const int DISP_CHANGE_RESTART = 1;
        public const int DISP_CHANGE_FAILED = -1;
    }
    public class PrmaryScreenResolution
    {
        static public string ChangeResolution(int width, int height)
        {
            DEVMODE1 dm = GetDevMode1();
            if (0 != User_32.EnumDisplaySettings(null, User_32.ENUM_CURRENT_SETTINGS, ref dm))
            {
                dm.dmPelsWidth = width;
                dm.dmPelsHeight = height;
                int iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_TEST);
                if (iRet == User_32.DISP_CHANGE_FAILED)
                {
                    return "Unable To Process Your Request. Sorry For This Inconvenience.";
                }
                else
                {
                    iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_UPDATEREGISTRY);
                    switch (iRet)
                    {
                        case User_32.DISP_CHANGE_SUCCESSFUL:
                            {
                                return "Success";
                            }
                        case User_32.DISP_CHANGE_RESTART:
                            {
                                return "You Need To Reboot For The Change To Happen.\n If You Feel Any Problem After Rebooting Your Machine\nThen Try To Change Resolution In Safe Mode.";
                            }
                        default:
                            {
                                return "Failed To Change The Resolution";
                            }
                    }
                }
            }
            else
            {
                return "Failed To Change The Resolution.";
            }
        }
        private static DEVMODE1 GetDevMode1()
        {
            DEVMODE1 dm = new DEVMODE1();
            dm.dmDeviceName = new String(new char[32]);
            dm.dmFormName = new String(new char[32]);
            dm.dmSize = (short)Marshal.SizeOf(dm);
            return dm;
        }
    }
}
"@
Add-Type $pinvokeCode -ErrorAction SilentlyContinue
[Resolution.PrmaryScreenResolution]::ChangeResolution($width,$height)
}
Set-ScreenResolution -Width 1280 -Height 720

Where in the TS are you running this and with what command-line? Have you examine smsts.log to see it's status?

Why not just set this in your unattend.xml file or customsettings.ini if using MDT (if not using MDT, why not?)

It is sequenced after OS and SCCM Client is installed and with command "cmd.exe /C %SYSTEMDRIVE%\OSD\Install.cmd /f"

The Install.cmd installs the screen resolution script with command "cmd.exe /c powershell.exe -ExecutionPolicy unrestricted -File %SYSTEMDRIVE%\OSD\CIS\ChangeResolution.ps1"

We have different OSD images for different location , and we only want to change the resolution in one location. Hence afraid to change the customsettings.ini 

Thanks,

The whole point of customsettings.ini is to be dynamic. Within it, you can easily create different sections for different locations:

https://anothermike2.wordpress.com/2012/04/21/back-to-basic-customsettings-ini-explained/