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From Wikipedia, the free encyclopedia
Original author(s)Matthew Allum
Initial releaseJanuary 1, 2007; 17 years ago (2007-01-01)
Written inC
TypeDisplay server
LicenseMIT License

Xephyr is a display server software implementing the X11 display server protocol based on KDrive which targets a window on a host X Server as its framebuffer. It is written by Matthew Allum. Xephyr is an X-on-X implementation and runs on X.Org Server and can work with Glamor.[1] Future versions could make use of libinput.[citation needed] Replacing Xephyr with the xf86-video-dummy and xf86-video-nested drivers in the normal X.Org server is being considered as part of X11R7.8.[2]


Unlike the similar Xnest, Xephyr supports modern X extensions (even if the host server does not) such as composite, damage, and randr. It uses SHM images and shadow framebuffer updates to provide good performance. It also has a visual debugging mode for observing screen updates.


Xorg's version of Xephyr uses only software rendering for OpenGL, but Feng Haitao has developed a forked version of Xephyr which can do hardware-accelerated rendering if the underlying X server has the capability.

See also[edit]


  1. ^ "ANNOUNCE: xorg-server 1.16.0". freedesktop.org. 2014-07-17.
  2. ^ Larabel, Michael (June 16, 2012). "X.Org 7.8 Will Not Come For A While". Phoronix. Retrieved February 11, 2015.

External links[edit]