"The specified executable is not a valid application for this OS platform"

Hello,
my desktop PC is connected via VGA to a Samsung C27F396. I'm able to retrieve and set all the VPC features through DDC using other tools like "ControlMyMonitor". For example, I can switch the input source (60). Using the latest pre-compiled binary of winddcutil, however, the capabilities command just returns 0 and prints nothing to stdout. Also, directly changing a VCP feature through the "set" command seems to have no effect at all. How can I troubleshoot this?

I get

winddcutil.exe capabilities 0
Failed to get capabilities string length

for my DELL U4924DW monitor.
I don't use the precompiled executable, but compiled it myself.

Using ddcutil on Linux works as expected.

Hi Scott,

Do you know if in Windows we can set the I2C source address (to support LG monitors?)

rockowitz/ddcutil#100 (comment)

Thanks,
Fidel

Hi,
for my DELL U4924DW monitor I wrote a small script to swap pbp and switch usb input:

@echo off
set DDCUTIL=C:\bin\winddcutil.exe
set MONITOR=0

%DDCUTIL%" setvcp %MONITOR% 0xe5 0xf000
timeout /t 1 /nobreak
"%DDCUTIL%" getvcp %MONITOR% 0xe5
timeout /t 4 /nobreak
"%DDCUTIL%" setvcp %MONITOR% 0xe7 0xff00
timeout /t 1 /nobreak
"%DDCUTIL%" getvcp %MONITOR% 0xe7

The timeouts are necessary, because otherwise the following command isn't accecpted, because the monitor seems to be still working on the command before.
In general this script works as expected, but sometimes the command to switch usb does something completely different, i.e. it switches the usb devices to a different input (HDMI1, ...). The problem also occurs, when swapping pbp is commented out, so it is not a problem with the order of commands. Swapping pbp always works as expected.
When the problem occurs, getvcp 0xe7 returns "VCP 0xe7 0", while "VCP 0xe7 1500" is shown, if the command succeeds.

The problem doesn't occur with ddcutil on Linux.

Hi, I have MSI Optix G24C and I cant get or set values.
The problem monitor have id 2. Monitor with id 1 successfully change input source

PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe help
Usage: winddcutil command [<arg> ...]
Commands:
        help                                           Display help
        detect                                         Detect monitors
        capabilities <display-id>                      Query monitor capabilities
        getvcp <display-id> <feature-code>             Report VCP feature value
        setvcp <display-id> <feature-code> <new-value> Set VCP feature value
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe detect
Display 0:      Generic PnP Monitor
Display 1:      Generic PnP Monitor
Display 2:      Generic PnP Monitor
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe capabilities 0
Failed to get capabilities string length
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe getvcp 0 60
VCP 60 5
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe setvcp 0 60 5
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe capabilities 1
Failed to get capabilities string length
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe getvcp 1 60
Failed to get the vcp code value
PS C:\Dev\winddcutil-main\x64\Release> .\winddcutil.exe setvcp 1 60 3
Failed to set vcp feature

Is that trouble with my monitor?

--model and/or --sn for selection when display number can change.

Great tool thanks!

C:\Program Files\<some-folder>\vesa-utils>winddcutil.exe detect
Traceback (most recent call last):
  File "cli.py", line 6, in <module>
  File "winddcutil\__main__.py", line 10, in main
  File "winddcutil\winddcutil.py", line 10, in detect
  File "monitorcontrol\monitorcontrol.py", line 84, in __enter__
  File "monitorcontrol\vcp\vcp_windows.py", line 55, in __enter__
monitorcontrol.vcp.vcp_abc.VCPError: more than one physical monitor per hmonitor
[3636] Failed to execute script 'cli' due to unhandled exception!

I have two physical monitors (Desktop + Beamer), both showing the same desktop (duplicate).