Solved query monitor EDID

shoober420 · Feb 14, 2025

im tweaking a Radeon graphics option "Color Depth" (color_depth) from Adrenalin in registry and it adds a key with the monitors EDID in the string

Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12

is there a way to query any monitors EDID so the tweak can be universal for all monitors?

spapakons · Feb 14, 2025

Download Aida64 and go to the Monitor section to see all monitor data. You can copy any value you want or extract to plain text or HTML file.

garlin · Feb 14, 2025

@shoober420 wants to script it...

shoober420 · Feb 14, 2025

when running "get-wmiobject -class win32_desktopmonitor | select-object SerialNumber", it reads blank. theres no info present. how could this be? amd is able to find it. the PNPDeviceID is not what the reg key uses.

garlin · Feb 14, 2025

D32h-J09 is a Vizio display monitor. I have no idea what the other 3 values represent. Download MonitorInfoView and see if any other bytes make sense.

dacrone · Feb 14, 2025

.https://www.nirsoft.net/utils/dump_edid.html

nirsoft has this one too that i used in an old batch to pull monitor info

shoober420 · Feb 14, 2025

using the MonitorInfoView program, the numbers are the ManufacturerID and the ProductID in that order. i guess certain monitors, especially TV ones might not have a serial number. fortunately the reg key doesnt use it.

trying to query the ManufacturerID and ProductID with get-wmiobject still shows blank. im not sure why i cant query the info

garlin · Feb 14, 2025

What's the last number (12)? Is that part of the model name?

garlin · Feb 15, 2025

Here's my best guess...

Code:

function Convert-BigEndianToLittleEndian {
    param(
        [int]$BigEndianValue
    )

    $bytes = [System.BitConverter]::GetBytes($BigEndianValue)
    [Array]::Reverse($bytes)
    return [System.BitConverter]::ToUInt32($bytes,0)
}

foreach ($Monitor in @(Get-WmiObject -Namespace root\wmi -Class WmiMonitorID)) {
    $bigEndianInt32 = [Convert]::ToInt32(-join $Monitor.ManufacturerName[0..2].ForEach({[Convert]::ToString($_ - 64,2).PadLeft(5,'0')}),2)
    $Manufacturer = (Convert-BigEndianToLittleEndian $bigEndianInt32) -shr 16

    $ProductID = [int]::Parse(-join $Monitor.ProductCodeID[0..3].ForEach{[char]$_}, [System.Globalization.NumberStyles]::HexNumber)

    $Model = ([System.Text.Encoding]::ASCII.GetString($Monitor.UserFriendlyName[0..($Monitor.UserFriendlyNameLength -3)]) -split ' ')[1]

    'EDID_{0}_{1}_{2}_?' -f $Manufacturer, $ProductID, $Model
}

shoober420 · Feb 15, 2025

my fault i just got home from work. it appears to corrolate with the "DisplayPath" reg keys that are chosen for the monitor. there is DisplayPath 0-13, and DisplayPath_12 is the only one populated with settings for the monitor (ironically being related to Display Color Enhancement: Vivid Gaming). it looks like it randomly picks a DisplayPath tree, as i dont see the logic behind it choosing 12.

that puts a whole new twist on things. now we would have to query which DisplayPath is populated with an EDID directory for the tweak to apply in the correct DisplayPath tree.

shoober420 · Feb 15, 2025

when i run the script, it doesnt print the $Model (D32h-j09). the ManufacturerID and ProductID do successfully print.

i just noticed that in the DisplayPath_X trees, the EDID number is the hex version of 14937 and 4166 (3A59 and 1046)

shoober420 · Feb 15, 2025

on the $Model string, i changed the [1] at the very end to a [0] and now it prints the $Model (D32h-J09)

garlin · Feb 15, 2025

I have a "DELL P2715Q". Wasn't sure if it's supposed to return the whole string with a space, or just the trailing model name. Can you find another monitor, or a friend with the same Radeon software setup to see how the model name is handled?

shoober420 · Feb 15, 2025

i had a typo. i meant i changed the [1] at the end of the string of $Model to [0] and now it prints correctly. what does [X] at the end of a string do?

my monitor broke when i was moving so now im stuck with this Vizio TV for a monitor. i unfortunately dont know anyone i can borrow another monitor from.

i could just add the reg key for each DisplayPath_X instance 13 times, but thats kind of dirty. it may have to suffice

garlin · Feb 15, 2025

"apple banana" -split ' ' -> @('apple', 'banana')
[0] or [1] is the index into array @('apple', 'banana')

Your UserFriendlyName is one word, mine is two. As I don't have a Radeon, we're at an impasse unless someone else volunteers what their reg path looks like.

shoober420 · Feb 15, 2025

i made a post on the guru3d radeon driver board and asked if anyone could launch the script and see if it correctly finds the monitor EDID. two people have responded as of this post and one user says its empty, and the other says it prints the model.

Color Depth and Display Color Enhancement registry keys

Does anyone know what registry keys are responsible for changing the "Color Depth" and "Display Color Enhancement" options in Adrenalin Display...

forums.guru3d.com

i also wanted to thank you for all the help. the way you query the monitor EDID with that code is genius.

there is another weird thing , 8 more additional keys are created in the "Control\Video" directory tree when modifying the Color Depth option that have a different ID than whats in "Control\Class"

you made a script that detects the correct tree by querying the "Driver" reg key in "ControlSet001\Enum\%%i"

Code:

for /f %%i in ('wmic path Win32_VideoController get PNPDeviceID^| findstr /L "PCI\VEN_"') do (
        for /f "tokens=3" %%a in ('reg query "HKLM\SYSTEM\ControlSet001\Enum\%%i" /v "Driver"') do (
                for /f %%i in ('echo %%a ^| findstr "{"') do (

how could we get the correct HWID for the "Control\Video" color_depth reg key tree as well? have it find a unique AMD reg key in one of the folders and apply it into those trees?

garlin · Feb 15, 2025

Like I said, don't have a Radeon to see what you're seeing. If there's a reg path example, and you can recognize some parts and explain what I'm supposed to return...

shoober420 · Feb 15, 2025

i got this output from regscanner. its all the color_depth keys that are changed when selecting a new BPC option.

the other "8BC7BB77-EA54-11EF-BC4A-F15C8525B16B" HWID is the new one. it appears to be variable as i googled for keys in "Control\Video" and different values were used depending on the radeon card

Code:

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0000\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0001\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0002\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0003\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0004\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\ControlSet001\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0005\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0000\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0001\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0002\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0003\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0004\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

==================================================
Registry Key      : HKLM\SYSTEM\CurrentControlSet\Control\Video\{8BC7BB77-EA54-11EF-BC4A-F15C8525B16B}\0005\DAL3_DATA\common\EDID_14937_4166_D32h-J09_12
Name              : color_depth
Type              : REG_BINARY
Data              : 03 00 00 00
Key Modified Time : 2/15/2025 12:09:52 PM
Data Length       : 4
Key Owner         : BUILTIN\Administrators
==================================================

shoober420 · Feb 15, 2025

Ghosty and The Creator on guru3d said they both have radeon cards. since The Creator had a blank result and Ghostys result was the query being successful, we can fortunately rule out its not NVIDIA specific

shoober420 · Feb 16, 2025

@garlin
ive been trying all day to convert the batch script strings into powershell equivilent to identify the correct GPU with no success. one time i was close, but it copied the whole "PCI\VEN_" string instead of taking it from the "Driver" reg key. Could you show me where my code is wrong?

im trying to convert this:

Code:

for /f %%i in ('wmic path Win32_VideoController get PNPDeviceID^| findstr /L "PCI\VEN_"') do (   
for /f "tokens=3" %%a in ('reg query "HKLM\SYSTEM\ControlSet001\Enum\%%i" /v "Driver"') do ( 
for /f %%i in ('echo %%a ^| findstr "{"') do (

into this:

Code:

foreach-object $HWID in (Get-CimInstance win32_VideoController | Where-Object {$_.AdapterDACType -notlike "Internal"} | Select-Object -ExpandProperty PNPDeviceID | Select-String -SimpleMatch "PCI\VEN_") do {
foreach-object $HWID2 in (reg query "HKLM:SYSTEM\ControlSet001\Enum\$HWID" /v "Driver") do {
foreach-object $HWID in (echo $HWID2 | Select-String -SimpleMatch "{") do {

New-Item -Path HKLM:SYSTEM\ControlSet001\Control\Class\$HWID\DAL3_DATA\common\$Display -Force
New-ItemProperty -Path HKLM:SYSTEM\ControlSet001\Control\Class\$HWID\DAL3_DATA\common\$Display -Name "color_depth" -Value ([byte[]]@(0x04,0x00,0x00,0x00)) -PropertyType Binary -Force

New-Item -Path HKLM:SYSTEM\CurrentControlSet\Control\Class\$HWID\DAL3_DATA\common\$Display -Force
New-ItemProperty -Path HKLM:SYSTEM\CurrentControlSet\Control\Class\$HWID\DAL3_DATA\common\$Display -Name "color_depth" -Value ([byte[]]@(0x04,0x00,0x00,0x00)) -PropertyType Binary -Force

}
}
}

cmd /k 'pause'

Solved query monitor EDID

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