Provided by: xserver-xorg-video-ati_6.8.0-1_i386 bug


       radeon - ATI RADEON video driver


       Section "Device"
         Identifier "devname"
         Driver "radeon"


       radeon is an Xorg driver for ATI RADEON based video cards.  It contains
       full support for 8, 15, 16 and 24 bit pixel  depths,  dual-head  setup,
       flat   panel,  hardware  2D  acceleration,  hardware  3D  acceleration,
       hardware cursor, XV extension, and the Xinerama extension.


       The radeon driver supports  PCI  and  AGP  video  cards  based  on  the
       following ATI chips

       R100        Radeon 7200

       RV100       Radeon 7000(VE), M6, RN50/ES1000

       RS100       Radeon IGP320(M)

       RV200       Radeon 7500, M7, FireGL 7800

       RS200       Radeon IGP330(M)/IGP340(M)

       RS250       Radeon Mobility 7000 IGP

       R200        Radeon 8500, 9100, FireGL 8800/8700

       RV250       Radeon 9000PRO/9000, M9

       RS300       Radeon 9100 IGP

       RS350       Radeon 9200 IGP

       RS400       Radeon XPRESS 200/200M IGP (2d only)

       RV280       Radeon 9200PRO/9200/9200SE, M9+

       R300        Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1

       R350        Radeon 9800PRO/9800SE/9800, FireGL X2

       R360        Radeon 9800XT

       RV350       Radeon 9600PRO/9600SE/9600, M10/M11, FireGL T2

       RV360       Radeon 9600XT

       RV370       Radeon X300, M22

       RV380       Radeon X600, M24

       RV410       Radeon X700, M26 PCIE

       R420        Radeon X800 AGP

       R423/R430   Radeon X800, M28 PCIE

       R480/R481   Radeon X850 PCIE/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 "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
              The default value is 0x1E.

       Option "ScalerWidth" "integer"
              This sets the overlay scaler buffer width. Accepted values range
              from 1024 to 2048, divisible by 64, values other than  1536  and
              1920 may not make sense though. Should be set automatically, but
              noone has a clue what the limit is for which chip. If you  think
              quality  is  not  optimal  when  playing  back  HD  video  (with
              horizontal resolution larger than this setting),  increase  this
              value,  if  you  get  an empty area at the right (usually pink),
              decrease it. Note this only affects the "true" overlay  via  xv,
              it won’t affect things like textured video.
              The default value is either 1536 (for most chips) or 1920.

       Option "AGPMode" "integer"
              Set AGP data transfer rate.  (used only when DRI is enabled)
              1      -- 1x (before AGP v3 only)
              2      -- 2x (before AGP v3 only)
              4      -- 4x
              8      -- 8x (AGP v3 only)
              others -- invalid
              The default is to leave it unchanged.

       Option "AGPFastWrite" "boolean"
              Enable  AGP  fast writes.  Enabling this is frequently the cause
              of instability. Used only when the DRI is enabled. If you enable
              this option you will get *NO* support from developers.
              The default is off.

       Option "BusType" "string"
              Used  to  replace  previous ForcePCIMode option.  Should only be
              used when driver’s bus detection is incorrect  or  you  want  to
              force  a  AGP card to PCI mode. Should NEVER force a PCI card to
              AGP bus.
              PCI    -- PCI bus
              AGP    -- AGP bus
              PCIE   -- PCI Express (falls back to PCI at present)
              (used only when DRI is enabled)
              The default is auto detect.

       Option "DDCMode" "boolean"
              Force to use the modes queried from the connected monitor.
              The default is off.

       Option "DisplayPriority" "string"
              Used to prevent flickering or tearing problem caused by  display
              buffer underflow.
              AUTO   -- Driver calculated (default).
              BIOS   -- Remain unchanged from BIOS setting.
                        Use this if the calculation is not correct
                        for your card.
              HIGH   -- Force to the highest priority.
                        Use this if you have problem with above options.
                        This may affect performance slightly.
              The default value is AUTO.

       Option "ColorTiling" "boolean"
              Frame  buffer  can  be addressed either in linear or tiled mode.
              Tiled mode can provide significant performance benefits with  3D
              applications,  for  2D  it shouldn’t matter much. Tiling will be
              disabled if the virtual x resolution exceeds 2048 (3968 for R300
              and  above),  if option UseFBDev is used, or (if DRI is enabled)
              the drm module is too old.
              If this option is enabled, a new  dri  driver  is  required  for
              direct rendering too.
              Color  tiling  will  be  automatically disabled in interlaced or
              doublescan screen modes.
              The default value is on.

       Option "IgnoreEDID" "boolean"
              Do not use EDID data for mode validation, but DDC is still  used
              for monitor detection. This is different from NoDDC option.
              The default value is off.

       Option "PanelSize" "string"
              Should  only be used when driver cannot detect the correct panel
              size.  Apply to both desktop (TMDS) and  laptop  (LVDS)  digital
              panels.   When  a  valid  panel  size  is specified, the timings
              collected from DDC and BIOS will not be  used.  If  you  have  a
              panel  with timings different from that of a standard VESA mode,
              you have to provide this information through the Modeline.
              For example, Option "PanelSize" "1400x1050"
              The default value is none.

       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 "ForceMinDotClock" "frequency"
              Override minimum dot clock. Some Radeon BIOSes report a  minimum
              dot  clock  unsuitable  (too  high) for use with television sets
              even when they actually can produce lower dot clocks. If this is
              the  case you can override the value here.  Note that using this
              option may damage your hardware.   You  have  been  warned.  The
              frequency  parameter  may  be  specified  as  a float value with
              standard suffixes like "k", "kHz", "M", "MHz".

       Option "RenderAccel" "boolean"
              Enables or disables hardware Render acceleration.   This  driver
              does  not  support  component alpha (subpixel) rendering.  It is
              only supported  on  Radeon  series  up  to  and  including  9200
              (9500/9700  and  newer  unsupported).   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, but the rendering code for it is newer
              and possibly unstable.  The default is XAA.

       Option "AccelDFS" "boolean"
              Use  or  don’t  use accelerated EXA DownloadFromScreen hook when
              possible  (only  when  Direct  Rendering  is   enabled,   e.g.).
              Default:  off  with  AGP  due to issues with GPU->host transfers
              with some AGP bridges, on otherwise.

       Option "FBTexPercent" "integer"
              Amount of video RAM to reserve for OpenGL textures, in  percent.
              With  EXA,  the  remainder  of  video  RAM  is  reserved for EXA
              offscreen management. Specifying  0  results  in  all  offscreen
              video  RAM  being  reserved  for  EXA and only GART memory being
              available for OpenGL textures. This may improve EXA performance,
              but  beware  that it may cause problems with OpenGL drivers from
              Mesa  versions  older  than  6.4.  With  XAA,  specifying  lower
              percentage  than  what  gets reserved without this option has no
              effect, but the driver tries to increase the video RAM  reserved
              for textures to the amount specified roughly.  Default: 50.

       Option "DepthBits" "integer"
              Precision  in bits per pixel of the shared depth buffer used for
              3D acceleration.  Valid values are 16 and 24. When this  is  24,
              there  will  also  be a hardware accelerated stencil buffer, but
              the combined depth/stencil buffer will take  up  twice  as  much
              video  RAM  as  when  it’s  16.  Default: The same as the screen

       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: on.

       Option "SubPixelOrder" "string"
              Force subpixel order to specified order.  Subpixel order is used
              for subpixel decimation on flat panels.
              NONE   -- No subpixel (CRT like displays)
              RGB    -- in horizontal RGB order (most flat panels)
              BGR    -- in horizontal BGR order (some flat panels)

              This option is intended to be used in following cases:
              1. The default subpixel order is incorrect for your panel.
              2. Enable subpixel decimation on analog panels.
              3. Adjust to one display type in dual-head clone mode setup.
              4.  Get  better  performance with Render acceleration on digital
              panels (use NONE setting).
              The default is NONE for CRT, RGB for digital panels

       Option "DynamicClocks" "boolean"
              Enable dynamic clock scaling.  The  on-chip  clocks  will  scale
              dynamically  based  on  usage.  This  can  help  reduce heat and
              increase battery life  by  reducing  power  usage.   Some  users
              report reduced 3D performance with this enabled.  The default is

       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.

       Option "ReverseDDC" "boolean"
              When BIOS connector  informations  aren’t  available,  use  this
              option  to reverse the mapping of the 2 main DDC ports. Use this
              if the X serve obviously detects  the  wrong  display  for  each
              connector.  This  is  typically  needed on the Radeon 9600 cards
              bundled with Apple G5s. The default is off.

       Option "LVDSProbePLL" "boolean"
              When  BIOS  panel  informations  aren’t   available   (like   on
              PowerBooks),  it  may  still  be  necessary  to use the firmware
              provided PLL values for the panel  or  flickering  will  happen.
              This  option  will force probing of the current value programmed
              in the chip when X is launched  in  that  case.   This  is  only
              useful for LVDS panels (laptop internal panels).  The default is

       Option "TVDACLoadDetect" "boolean"
              Enable load detection on the TV DAC.  The  TV  DAC  is  used  to
              drive  both  TV-OUT and analog monitors. Load detection is often
              unreliable in the TV DAC so it  is  disabled  by  default.   The
              default is off.

       Option "DefaultTMDSPLL" "boolean"
              Use  the default driver provided TMDS PLL values rather than the
              ones provided by the bios. This option  has  no  effect  on  Mac
              cards.  Enable this option if you are having problems with a DVI
              monitor using the internal TMDS controller.  The default is off.

       Option "DRI" "boolean"
              Enable DRI support.  This option allows you to enable to disable
              the DRI.  The default is off for RN50/ES1000 and on for  others.

       Option "DefaultConnectorTable" "boolean"
              Enable  this option to skip the BIOS connector table parsing and
              use the driver defaults for each chip.  The default is off

       Option "MacModel" "string"
              Used to specify Mac models for connector tables and quirks.   If
              you  have  a  powerbook  or  mini  with  DVI  that does not work
              properly, try the alternate
               options as Apple does not seem to provide a good way of knowing
               they  use  internal  or  external  TMDS for DVI.  Only valid on
              ibook                -- ibooks
              powerbook-external   -- Powerbooks with external DVI
              powerbook-internal   -- Powerbooks with integrated DVI
              powerbook-vga        -- Powerbooks with VGA rather than DVI
              powerbook-duallink   -- powerbook-external alias
              powerbook            -- powerbook-internal alias
              mini-external        -- Mac Mini with external DVI
              mini-internal        -- Mac Mini with integrated DVI
              mini                 -- mini-external alias
              imac-g5-isight       -- iMac G5 iSight
              The default value is undefined.

       Option "TVStandard" "string"
              Used to specify the default TV  standard  if  you  want  to  use
              something other than the bios default. Valid options are:
              The default value is undefined.

       Option "ForceTVOut" "boolean"
              Enable  this  option  to  force  TV Out to always be detected as
              attached.  The default is off

       Option "IgnoreLidStatus" "boolean"
              Enable this option to ignore lid status on  laptops  and  always
              detect LVDS as attached.  The default is on.

       SEE ALSO
              Xorg(1), xorg.conf(5), xorgconfig(1), Xserver(1), X(7)


       Authors include:
       Rickard E. (Rik) Faith
       Kevin E. Martin
       Alan Hourihane 
       Marc Aurele La France
       Benjamin Herrenschmidt
       Michel Dänzer  
       Alex Deucher   
       Bogdan D.      
       Eric Anholt