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CONFIG_FB_VIRTUAL: Virtual Frame Buffer support (ONLY FOR TESTING!)

General informations

The Linux kernel configuration item CONFIG_FB_VIRTUAL has multiple definitions:

Virtual Frame Buffer support (ONLY FOR TESTING!) found in drivers/video/fbdev/Kconfig

The configuration item CONFIG_FB_VIRTUAL:

Help text

This is a `virtual' frame buffer device. It operates on a chunk of unswappable kernel memory instead of on the memory of a graphics board. This means you cannot see any output sent to this frame buffer device, while it does consume precious memory. The main use of this frame buffer device is testing and debugging the frame buffer subsystem. Do NOT enable it for normal systems! To protect the innocent, it has to be enabled explicitly at boot time using the kernel option `video=vfb:'.

To compile this driver as a module, choose M here: the module will be called vfb. In order to load it, you must use the vfb_enable=1 option.

If unsure, say N.

Virtual Frame Buffer support (ONLY FOR TESTING!) found in drivers/video/Kconfig

The configuration item CONFIG_FB_VIRTUAL:

Help text

This is a `virtual' frame buffer device. It operates on a chunk of unswappable kernel memory instead of on the memory of a graphics board. This means you cannot see any output sent to this frame buffer device, while it does consume precious memory. The main use of this frame buffer device is testing and debugging the frame buffer subsystem. Do NOT enable it for normal systems! To protect the innocent, it has to be enabled explicitly at boot time using the kernel option `video=vfb:'.

To compile this driver as a module, choose M here: the module will be called vfb. In order to load it, you must use the vfb_enable=1 option.

If unsure, say N.

Virtual Frame Buffer support (ONLY FOR TESTING!) (EXPERIMENTAL) found in drivers/video/Kconfig

The configuration item CONFIG_FB_VIRTUAL:

Help text

This is a `virtual' frame buffer device. It operates on a chunk of unswappable kernel memory instead of on the memory of a graphics board. This means you cannot see any output sent to this frame buffer device, while it does consume precious memory. The main use of this frame buffer device is testing and debugging the frame buffer subsystem. Do NOT enable it for normal systems! To protect the innocent, it has to be enabled explicitly at boot time using the kernel option `video=vfb:'.

This driver is also available as a module ( = code which can be inserted and removed from the running kernel whenever you want). The module will be called vfb.o. If you want to compile it as a module, say M here and read Documentation/modules.txt.

If unsure, say N.

Hardware

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