验证：补充2K刷新率与单显示器验收

tools/set-2k-display.ps1

@@ -1,3 +1,4 @@
+param([ValidateSet(30, 60)][int]$RefreshRate = 60)
 $ErrorActionPreference = 'Stop'
 Add-Type @'
 using System;
@@ -45,12 +46,12 @@ public static class VdiDisplayMode {
         if (!EnumDisplaySettings(name, -1, ref m)) return "unavailable";
         return m.width + "x" + m.height + "@" + m.hz;
     }
-    public static int Apply(string name) {
+    public static int Apply(string name, int refreshRate) {
         for (int i = 0; ; i++) {
             var m = new Mode();
             m.size = (short)Marshal.SizeOf(typeof(Mode));
             if (!EnumDisplaySettings(name, i, ref m)) return -99;
-            if (m.width == 2560 && m.height == 1440 && m.hz == 30) {
+            if (m.width == 2560 && m.height == 1440 && m.hz == refreshRate) {
                 m.fields = 0x80000 | 0x100000 | 0x400000;
                 int test = ChangeDisplaySettingsEx(name, ref m, IntPtr.Zero, 2, IntPtr.Zero);
                 if (test != 0) return test;
@@ -61,13 +62,18 @@ public static class VdiDisplayMode {
 }
 '@
 $log = 'C:/ProgramData/VDI/set-2k-result.txt'
+$expectedMode = "2560x1440@$RefreshRate"
 try {
     for ($i = 0; $i -lt 12; $i++) {
         $dev = [VdiDisplayMode]::Find()
         if ($dev) {
-            $result = [VdiDisplayMode]::Apply($dev)
+            if ([VdiDisplayMode]::Current($dev) -eq $expectedMode) {
+                "$(Get-Date -Format o) device=$dev result=0 mode=$expectedMode (already correct)" | Set-Content $log
+                exit 0
+            }
+            $result = [VdiDisplayMode]::Apply($dev, $RefreshRate)
             $mode = [VdiDisplayMode]::Current($dev)
-            if ($result -eq 0 -and $mode -eq '2560x1440@30') {
+            if ($result -eq 0 -and $mode -eq $expectedMode) {
                 "$(Get-Date -Format o) device=$dev result=0 mode=$mode" | Set-Content $log
                 exit 0
             }