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r128 - ATI Rage 128 video driver
r128 is an Xorg driver for ATI Rage 128 based video cards. It contains
full support for 8, 15, 16 and 24 bit pixel depths, hardware accelera-
tion of drawing primitives, hardware cursor, video modes up to
1800x1440 @ 70Hz, doublescan modes (e.g., 320x200 and 320x240), gamma
correction at all pixel depths, a fully programming dot clock and
robust text mode restoration for VT switching. Dualhead is supported
on M3/M4 mobile chips.
The r128 driver supports all ATI Rage 128 based video cards including
the Rage Fury AGP 32MB, the XPERT 128 AGP 16MB and the XPERT 99 AGP
Please refer to xorg.conf(5) for general configuration details. This
section only covers configuration details specific to this driver.
The driver auto-detects all device information necessary to initialize
the card. However, if you have problems with auto-detection, you can
VideoRam - in kilobytes
MemBase - physical address of the linear framebuffer
IOBase - physical address of the MMIO registers
ChipID - PCI DEVICE ID
In addition, the following driver Options are supported:
Option "SWcursor" "boolean"
Selects software cursor. The default is off.
Option "NoAccel" "boolean"
Enables or disables all hardware acceleration. The default is
to enable hardware acceleration.
Option "EnablePageFlip" "boolean"
Enable page flipping for 3D acceleration. This will increase
performance but not work correctly in some rare cases, hence the
default is off.
Option "RenderAccel" "boolean"
Enables or disables hardware Render acceleration. It is only
supported when using EXA acceleration and DRI. The default is
to enable Render acceleration.
Option "AccelMethod" "string"
Chooses between available acceleration architectures. Valid
options are XAA and EXA. XAA is the traditional acceleration
architecture and support for it is very stable. EXA is a newer
acceleration architecture with better performance for the Render
and Composite extensions. The default is XAA.
Option "VideoKey" "integer"
This overrides the default pixel value for the YUV video overlay
key. The default value is undefined.
The following Options are mostly important for non-x86 architectures:
Option "ProgramFPRegs" "boolean"
Enable or disable programming of the flat panel registers.
Beware that this may damage your panel, so use this at your own
risk. The default depends on the device.
Option "PanelWidth" "integer"
Option "PanelHeight" "integer"
Override the flat panel dimensions in pixels. They are used to
program the flat panel registers and normally determined using
the video card BIOS. If the wrong dimensions are used, the sys-
tem may hang.
Option "UseFBDev" "boolean"
Enable or disable use of an OS-specific framebuffer device
interface (which is not supported on all OSs). See fbdevhw(4)
for further information. Default: on for PowerPC, off for other
Option "DMAForXv" "boolean"
Try or don't try to use DMA for Xv image transfers. This will
reduce CPU usage when playing big videos like DVDs, but may
cause instabilities. Default: off.
The following additional Options are supported:
Option "ShowCache" "boolean"
Enable or disable viewing offscreen cache memory. A development
debug option. Default: off.
Option "VGAAccess" "boolean"
Tell the driver if it can do legacy VGA IOs to the card. This is
necessary for properly resuming consoles when in VGA text mode,
but shouldn't be if the console is using radeonfb or some other
graphic mode driver. Some platforms like PowerPC have issues
with those, and they aren't necessary unless you have a real
text mode in console. The default is off on PowerPC and SPARC
and on on other architectures.
Dualhead Note: The video BIOS on some laptops interacts strangely with
dualhead. This can result in flickering and problems changing modes on
crtc2. If you experience these problems try toggling your laptop's
video output switch (e.g., fn-f7, etc.) prior to starting X or switch
to another VT and back.
Xorg(1), xorg.conf(5), Xserver(1), X(7)
Rickard E. (Rik) Faith email@example.com
Kevin E. Martin firstname.lastname@example.org
X Version 11 R128(4)