Provided by: xserver-xorg-video-radeon_6.12.1-0ubuntu2_i386 bug


       radeon - ATI RADEON video driver


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


       radeon  is  an  Xorg  driver  for ATI RADEON based video cards with the
       following features:

       · Full support for 8, 15, 16 and 24 bit pixel depths;
       · RandR 1.2 and RandR 1.3 support;
       · TV-out  support  (only   on   R/RV/RS1xx,   R/RV/RS2xx,   R/RV/RS3xx.
         Experimental  support  on  R/RV5xx,  R/RV6xx, and R/RV7xx through the
         ATOMTvOut option);
       · Full EXA 2D acceleration;
       · Full XAA 2D acceleration (only on R/RV/RS1xx, R/RV/RS2xx, R/RV/RS3xx,
         R/RV/RS4xx, R/RV5xx, RS6xx. XAA Render acceleration supported only on
         R/RV100, R/RV/RS2xx and RS3xx);
       · Textured XVideo acceleration including anti-tearing support  (Bicubic
         filtering only available on R/RV3xx, R/RV/RS4xx, R/RV5xx, and RS6xx);
       · Overlay  XVideo  acceleration  (only   on   R/RV/RS1xx,   R/RV/RS2xx,
         R/RV/RS3xx, R/RV/RS4xx);
       · 3D acceleration (not supported on R/RV6xx and R/RV/RS7xx);


       The  radeon driver supports PCI, AGP, and PCIE 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
       RV280       Radeon 9200PRO/9200/9200SE/9250, M9+
       RS300       Radeon 9100 IGP
       RS350       Radeon 9200 IGP
       RS400/RS480 Radeon XPRESS 200(M)/1100 IGP
       R300        Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1
       R350        Radeon 9800PRO/9800SE/9800, FireGL X2
       R360        Radeon 9800XT
       RV350       Radeon 9600PRO/9600SE/9600/9550, 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
                   Radeon X1300/X1400/X1500/X2300
       R520        Radeon X1800
       RV530/RV560 Radeon X1600/X1650/X1700
       RV570/R580  Radeon X1900/X1950
                   Radeon X1200/X1250/X2100
       R600        Radeon HD 2900
       RV610/RV630 Radeon HD 2400/2600
       RV620/RV635 Radeon HD 3450/3470
       RV670       Radeon HD 3850/3870
       RS780       Radeon HD 3100/3200/3300
       RV710       Radeon HD 4350/4550
       RV730       Radeon HD 4650/4670
       RV770       Radeon HD 4850/4870


       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 bus
              (used only when DRI is enabled)
              The default is auto detect.

       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), 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.  It is currently only  supported  on  R/RV/RS4xx
              and older hardware.

       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.   It  is
              supported on all Radeon cards when using EXA acceleration and on
              Radeon  R/RV/RS1xx,  R/RV/RS2xx  and  RS3xx  when usig XAA.  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 EXA.

       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 server 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 "DefaultTVDACAdj" "boolean"
              Use the default driver provided TVDAC Adj 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
              washed out display on the secondary DAC.  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  whether  they  use  internal  or
              external  TMDS  for  DVI.  Only valid on PowerPC.  On Linux, the
              driver will attempt to detect the MacModel automatically.
              ibook                -- ibooks
              powerbook-external   -- Powerbooks with external DVI
              powerbook-internal   -- Powerbooks with integrated DVI
              powerbook-vga        -- Powerbooks with VGA rather than DVI
              mini-external        -- Mac Mini with external DVI
              mini-internal        -- Mac Mini with integrated DVI
              imac-g5-isight       -- iMac G5 iSight
              emac                 -- eMac G4
              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.

       Option "Int10" "boolean"
              This  option  allows  you  to disable int10 initialization.  Set
              this to False if you are experiencing a hang when initializing a
              secondary card.  The default is on.

       Option "EXAVSync" "boolean"
              This  option  attempts  to  avoid tearing by stalling the engine
              until the display controller has passed the destination  region.
              It  reduces tearing at the cost of performance and has been know
              to cause instability on some chips.  The default is off.

       Option "ATOMTvOut" "boolean"
              This option enables experimental  TV-out  support  for  R/RV5xx,
              R/RV6xx,  and R/RV7xx atombios chips. TV-out is experimental and
              may not function on these chips  as  well  as  hoped  for.   The
              default is off.

       Option "R4xxATOM" "boolean"
              This option enables modesetting on R/RV4xx chips using atombios.
              The default is off.


       The driver supports the following X11 Xv attributes for Textured Video.
       You can use the "xvattr" tool to query/set those attributes at runtime.

              XV_VSYNC  is  used   to   control   whether   textured   adapter
              synchronizes  the  screen update to the monitor vertical refresh
              to eliminate tearing.  It has two values: ’off’(0) and  ’on’(1).
              The default is ’on(1).

              XV_BICUBIC  is  used  to control whether textured adapter should
              apply a bicubic filter  to  smooth  the  output.  It  has  three
              values: ’off’(0), ’on’(1) and ’auto’(2). ’off’ means never apply
              the filter, ’on’ means always apply the filter and ’auto’  means
              apply  the  filter  only if the X and Y sizes are scaled to more
              than double, this to  avoid  blurred  output.   The  default  is


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

        1. Wiki page:

        2. Overview about radeon development code:

        3. Mailing list:

        4. IRC channel:
           #radeon on

        5. Query the bugtracker for radeon bugs:

        6. Submit bugs & patches:


       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