Could not execute auto check for display colors using command /usr/bin/xdpyinfo.

Most of the users have been getting Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set in Linux environment while checking requirement the oracle installations on  Linux 5.2 or later versions. I have tried plenty of options but finally, i have fixed this issue through one Linux commands. The  error screenshot desc belows

Steps to resolve this issue:

1) login into root user( su -l root)

2) execute this command : xhost +SI:localuser:oracle

3) login to the oracle user

4) execute ./runInstaller

Now, its working fine.

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7 thoughts on “Could not execute auto check for display colors using command /usr/bin/xdpyinfo.

  1. i have xming running on my laptop,
    i got root putty session with linux
    i can do xclock as root so i do su oracle
    i can do xclock as oracle also but runInstaller for DAC gives errors
    X-Server access is denied on host
    [Fatal Error] DISPLAY variable set incorrectly: localhost:10.0
    [Resolution] Verify that your DISPLAY environment variable is set correctly, and that there is an X11 server on the system. If you are running the Oracle Installer as a different user or on a different host, you may need to use the xhost command to ensure that host/user has permission to write to your display.

    I can run other universal installer from Oracle but not for DAC product

    any suggestion?

    • yesterday, i have faced same issue. All setup has been verfied and seems fine. just i restart my machine and login into oracle user and had executed oracle installer scripts. it works fine.

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