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Oracle Linux 7: Running X-Window Graphical Applications Fail: Error: Can't Open display (Doc ID 2722696.1)

Last updated on DECEMBER 13, 2023

Applies to:

Linux OS - Version Oracle Linux 7.8 with Unbreakable Enterprise Kernel [4.14.35] and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64


A user logged into an Oracle Linux 7 (OL7) system via SSH wishing to display X-Window/Graphical applications is unable to do so. Attempting to run graphical applications fails e.g.:



The system was recently installed or upgraded to Oracle Linux 7 (OL7).


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In this Document
 Set the DISPLAY environment variable
 Configure sshd to enable X11

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