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5. Boot Arguments for Video Frame Buffer Drivers
The `video=' argument (not avail. in v2.0 kernels) is used when the frame buffer device abstraction layer is built into the kernel. If that sounds complicated, well it isn't really too bad. It basically means that instead of having a different video program (the X11R6 server) for each brand of video card (e.g. XF86_S3, XF86_SVGA, ...), the kernel would have a built in driver available for each video card and export a single interface for the video program so that only one X11R6 server (XF86_FBDev) would be required. This is similar to how networking is now - the kernel has drivers available for each brand of network card and exports a single network interface so that just one version of a network program (like Netscape) will work for all systems, regardless of the underlying brand of network card.
The typical format of this argument is
Information on the options that each driver supports will
eventually be found in
If there is no Documentation file for your card, you
will have to get
the option information directly from the driver. Go to
5.1 The `video=map:...' Argument
This option is used to set/override the console to frame buffer device mapping. A comma separated list of numbers sets the mapping, with the value of option N taken to be the frame buffer device number for console N.
5.2 The `video=scrollback:...' Argument
A number after the colon will set the size of memory allocated for the scrollback buffer. (Use Shift and Page Up or Page Down keys to scroll.) A suffix of `k' or `K' after the number will indicate that the number is to be interpreted as kilobytes instead of bytes.
5.3 The `video=vc:...' Argument
A number, or a range of numbers (e.g.
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