Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

vga(4) [xfree86 man page]

VGA(4)							     Kernel Interfaces Manual							    VGA(4)

NAME
vga - Generic VGA video driver SYNOPSIS
Section "Device" Identifier "devname" Driver "vga" ... EndSection DESCRIPTION
vga is an XFree86 driver for generic VGA video cards. It can drive most VGA-compatible video cards, but only makes use of the basic stan- dard VGA core that is common to these cards. The driver supports depths 1, 4 and 8. All relevant visual types are supported at each depth. Multi-head configurations are supported in combination with some other drivers, but only when the vga driver is driving the primary head. SUPPORTED HARDWARE
The vga driver supports most VGA-compatible video cards. There are some known exceptions, and those should be listed here. CONFIGURATION DETAILS
Please refer to XF86Config(5) for general configuration details. This section only covers configuration details specific to this driver. The driver auto-detects the presence of VGA-compatible hardware. The ChipSet name may optionally be specified in the config file "Device" section, and will override the auto-detection: "generic" The driver will only use 64k of video memory for depth 1 and depth 8 operation, and 256k of video memory for depth 4 (this is the standard VGA limit). When operating at depth 8, only a single built-in 320x200 video mode is available. At other depths there is more flexibility regarding mode choice. The following driver Options are supported: Option "ShadowFB" "boolean" Enable or disable use of the shadow framebuffer layer. Default: off. This option is recommended for performance reasons when running at depths 1 and 4, especially when using modern PCI-based hardware. It is required when using those depths in a multi-head configuration where one or more of the other screens is operating at a dif- ferent depth. SEE ALSO
XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7) AUTHORS
Authors include: Marc La France, David Dawes, and Dirk Hohndel. XFree86 Version 4.7.0 VGA(4)

Check Out this Related Man Page

FBDEV(4)						     Kernel Interfaces Manual							  FBDEV(4)

NAME
fbdev - video driver for framebuffer device SYNOPSIS
Section "Device" Identifier "devname" Driver "fbdev" BusID "pci:bus:dev:func" ... EndSection DESCRIPTION
fbdev is an XFree86 driver for framebuffer devices. This is a non-accelerated driver, the following framebuffer depths are supported: 8, 15, 16, 24. All visual types are supported for depth 8, and TrueColor visual is supported for the other depths. Multi-head configurations are supported. SUPPORTED HARDWARE
The fbdev driver supports all hardware where a framebuffer driver is available. fbdev uses the os-specific submodule fbdevhw(4) to talk to the kernel device driver. Currently a fbdevhw module is available for linux. CONFIGURATION DETAILS
Please refer to XF86Config(5) for general configuration details. This section only covers configuration details specific to this driver. For this driver it is not required to specify modes in the screen section of the config file. The fbdev driver can pick up the currently used video mode from the framebuffer driver and will use it if there are no video modes configured. For PCI boards you might have to add a BusID line to the Device section. See above for a sample line. You can use "XFree86 -scanpci" to figure out the correct values. The following driver Options are supported: Option "fbdev" "string" The framebuffer device to use. Default: /dev/fb0. Option "ShadowFB" "boolean" Enable or disable use of the shadow framebuffer layer. Default: on. Option "Rotate" "string" Enable rotation of the display. The supported values are "CW" (clockwise, 90 degrees), "UD" (upside down, 180 degrees) and "CCW" (counter clockwise, 270 degrees). Implies use of the shadow framebuffer layer. Default: off. SEE ALSO
XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7), fbdevhw(4) AUTHORS
Authors include: Gerd Knorr, Michel Danzer, Geert Uytterhoeven XFree86 Version 4.7.0 FBDEV(4)
Man Page