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remlapmot/4k-windows-resize-after-sleep-fix.reg

Last active May 6, 2024 17:22
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Windows 10 registry entry setting which fixes PrimSurfSize.cx, PrimSurfSize.cy, and Stride values for a 4K monitor, so windows do not resize after sleep (an issue which seems to affect some Dell computers)
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4k-windows-resize-after-sleep-fix.reg
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\NOEDID_8086_3E98_00000000_00020000_31063^9B5CF2A2AB5D52EABA55D3D249C48521]
"SetId"="NOEDID_8086_3E98_00000000_00020000_31063"
"Timestamp"=hex(b):7c,f5,a9,74,7f,f1,d5,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\NOEDID_8086_3E98_00000000_00020000_31063^9B5CF2A2AB5D52EABA55D3D249C48521\00]
"PrimSurfSize.cx"=dword:00000f00
"PrimSurfSize.cy"=dword:00000870
"Stride"=dword:00003c00
"PixelFormat"=dword:00000015
"ColorBasis"=dword:00000002
"Position.cx"=dword:00000000
"Position.cy"=dword:00000000
"CcdDbVersion"=dword:00000003
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\NOEDID_8086_3E98_00000000_00020000_31063^9B5CF2A2AB5D52EABA55D3D249C48521\00\00]
"Flags"=dword:00830b8f
"VideoStandard"=dword:000000ff
"ActiveSize.cx"=dword:00000400
"ActiveSize.cy"=dword:00000300
"VSyncFreq.Numerator"=dword:03d239c8
"VSyncFreq.Denominator"=dword:00104dc0
"HSyncFreq.Numerator"=dword:0000ba54
"HSyncFreq.Denominator"=dword:00000001
"PixelRate"=dword:03d239c8
"ScanlineOrdering"=dword:00000001
"Scaling"=dword:00000004
"Rotation"=dword:00000001
"PrimSurfSize.cx"=dword:00000f00
"PrimSurfSize.cy"=dword:00000870
"Stride"=dword:00003c00
"PixelFormat"=dword:00000015
"ColorBasis"=dword:00000002
"DwmClipBox.left"=dword:00000000
"DwmClipBox.top"=dword:00000000
"DwmClipBox.right"=dword:00000400
"DwmClipBox.bottom"=dword:00000300
@remlapmot
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remlapmot commented Mar 3, 2020 •
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  • This was a problem using my 4K monitor on my work Dell desktop.
  • In PrimSurfSize.cx f00 corresponds to 3840
  • In PrimSurfSize.cy 870 corresponds to 2160
  • In Stride 3c00 corresponds to 15360

@Tomblarom
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Tomblarom commented May 6, 2024 •
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What is the Stride and how to "calculate" it? I have a 3440x1440.

@remlapmot
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See this answer for the formula https://superuser.com/a/1334787.

So I think you'd want: ((3440 * 32 + 7) / 8) = 13760 (ignoring the .88)

@remlapmot
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So hopefully 35c0 in hex for the dword value.

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