We're using the post install task to set the screen resolution as recorded in the get_screen_rez.exe with the /file switch in order to apply the screen resolution but it's failing with the following error:

Unable to change screen resolution

Error function call change display settingsex 1


 Error code


-1 disp_change_failed

 Requested settings:


Width 1024

Height 768

Bitspp 32

Refresh Rate 60

I've made sure that the monitor can handle these settings but the task just doesnt seem to set the resolution.  I also tried it without the /file switch and it works when you choose the resolution for a list given.  

Anyone managed to get the /file switch working?

We're using Windows 7 SP1 x64.



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Answer this question or Comment on this question for clarity



if you are using the /file switch you need to use the other rez tasks to create the file,  the /file will pick up os drive\KACE\bin\resolution.txt


Answered 09/20/2012 by: SMal.tmcc
Red Belt

  • Hi SMal.tmcc

    This is what I'm doing and I can see the .rez file that is created on petemp share but the /file switch doesn't work. I get the error as detailed in my original post.
  • is this a scripted install or a deployed image?
  • Hi,

    Scripted install

  • it could be due to the fact the correct video driver in not yet installed in your scripted install till reboot after post tasks.
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