Provided by: xserver-xorg-video-r128_6.8.1-5build2_amd64 bug


       r128 - ATI Rage 128 video driver


       Section "Device"
         Identifier "devname"
         Driver "r128"


       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 acceleration 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 8MB.


       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 specify:

           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

       Option "Dac6Bit" "boolean"
              Enables  or  disables  the  use  of  6  bits per color component when in 8 bpp mode
              (emulates VGA mode).  By default, all 8 bits per color  component  are  used.   The
              default is off.

       Option "VideoKey" "integer"
              This  overrides the default pixel value for the YUV video overlay key.  The default
              value is undefined.

       Option "Display" "string"
              Select display mode for devices which support flat panels. Supported modes are:

              "FP" - use flat panel;

              "CRT" - use cathode ray tube;

              "Mirror" - use both FP and CRT;

              "BIOS" - use mode as configured in the BIOS.

              The default is FP.

       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

       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 system 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 architectures.

       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
       Kevin E. Martin