3dfa6cce99
87. Remove the XF86_VERSION string from xf86Version.h, leaving just the
numerical values. All the version information is now derived from that
single set of values (David Dawes).
87 lines
2.6 KiB
Groff
87 lines
2.6 KiB
Groff
.\" $XFree86: xc/programs/Xserver/hw/kdrive/vesa/Xvesa.man,v 1.5 2001/01/24 00:06:10 dawes Exp $
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.TH Xvesa 1 __vendorversion__
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.SH NAME
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Xvesa \- VESA Bios Extensions tiny X server
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.SH SYNOPSIS
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.B Xvesa
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.RI [ :display ]
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.RI [ option ...]
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.SH DESCRIPTION
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.B Xvesa
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is a generic X server for Linux on the x86 platform.
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.B Xvesa
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doesn't know about any particular hardware, and sets the video mode by
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running the video BIOS in VM86 mode.
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.B Xvesa
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can use both standard VGA BIOS modes and any modes advertised by a
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VESA BIOS if available.
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.B Xvesa
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runs untrusted code with full privileges, and is therefore a fairly
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insecure X server.
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.B Run at your own risk.
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.SH OPTIONS
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In addition to the normal KDrive server's options (see Xkdrive(1)),
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.B Xvesa
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accepts the following command line switches:
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.TP 8
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.B -mode \fIn\fB
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specifies the VESA video mode to use. If mode
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.I n
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is not supported by your BIOS and hardware,
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.B Xvesa
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will fail, hang your system, or cause your monitor to explode; you are
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on your own. This option overrides any
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.B -screen
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options.
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.TP 8
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.B -listmodes
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list all supported video modes. If
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.B -force
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was specified before
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.BR -listmodes ,
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lists all the modes that your BIOS claims to support, even those that
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the
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.B Xvesa
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server won't be able to use.
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.TP 8
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.B -force
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disable some sanity checks and use the specified mode even if the
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BIOS claims not to support it.
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.TP 8
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.B -shadow
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use a shadow framebuffer even if it is not strictly necessary. This
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may dramatically improve performance on some hardware.
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.TP 8
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.B -nolinear
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don't use a linear framebuffer even if one is available. You don't
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want to use this option.
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.TP 8
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.B -swaprgb
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pass RGB values in the order that works on broken BIOSes. Use this if
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the colours are wrong in PseudoColor and 16 colour modes.
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.TP 8
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.B -verbose
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emit diagnostic messages during BIOS initialization and teardown.
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.SH KEYBOARD
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To be written.
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.SH BUGS
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.B Xvesa
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opens all IO ports and runs your VESA BIOS, which may be assumed to be
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buggy. Allowing your users to run
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.B Xvesa
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is probably a security hole.
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.B Xvesa
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records the current BIOS mode when it starts and restores that mode on
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termination; if the video card has been reprogrammed by another application,
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the display will almost certainly be trashed. The alternative of saving and
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restoring the complete video card state has proven unreliable on most video
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cards.
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.SH SEE ALSO
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X(__miscmansuffix__), Xserver(1), Xkdrive(1), xdm(1), xinit(1).
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.SH AUTHORS
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The VESA driver was written by Juliusz Chroboczek who didn't realise
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what he was doing until it was too late. Keith Packard then added
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support for standard VGA BIOS modes and is especially proud of 320x200
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16 colour mode.
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