How to fix Xlib warning: Xlib: extension "Generic Event Extension" missing on display? A Google search returns many results but I still can't fix it :(.
I Tried sudo apt-get install libxcb-event0 but it didn't help.

I am using Ubuntu on coLinux on Windows XP.

1 Answer 1


This is because the libraries support an extension that isn't supported by the X server yet. This message is harmless and can be ignored.

  • +1. but is it possible to disable this warning ? it fill my terminal where I start X application.
    – Hemant
    Sep 5, 2010 at 19:05

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