Virtual framebuffers

Many systems attack to challenge the action of a framebuffer device, generally for affidavit of compatibility. The two best accepted "virtual" framebuffers are the Linux framebuffer accessory (fbdev) and the X Virtual Framebuffer (Xvfb). The X Virtual Framebuffer was added to the X Window System administration to accommodate a adjustment for active X after a graphical framebuffer. While the aboriginal affidavit for this are absent to history, it is generally acclimated on avant-garde systems to abutment programs such as the Sun Microsystems JVM that do not acquiesce activating cartoon to be generated in a headless environment.

The Linux framebuffer accessory was developed to abstruse the concrete adjustment for accessing the basal framebuffer into a affirmed anamnesis map that is accessible for programs to access. This increases portability, as programs are not appropriate to accord with systems that accept aimless anamnesis maps or crave coffer switching.