Provided by: xserver-xorg-video-radeon_6.14.99~git20110811.g93fc084-0ubuntu1_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:

       o Full support for 8-, 15-, 16- and 24-bit pixel depths;
       o RandR 1.2 and RandR 1.3 support;
       o TV-out support (only on RV/RS1xx, RV/RS2xx, R/RV/RS3xx.  Experimental
         support  on  R/RV5xx,  R/RV6xx,  and  R/RV7xx  through  the ATOMTvOut
         option);  TV-out is not supported on cards that use the Rage  Theatre
         chip for TV-out (R100, R200).
       o Full EXA 2D acceleration;
       o 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);
       o Textured  XVideo acceleration including anti-tearing support (Bicubic
         filtering  only  available  on  R/RV3xx,  R/RV/RS4xx,  R/RV5xx,   and
       o Overlay   XVideo   acceleration   (only  on  R/RV/RS1xx,  R/RV/RS2xx,
         R/RV/RS3xx, R/RV/RS4xx);
       o 3D acceleration;


       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
       RS880       Radeon HD 4100/4200/4290
       RV710       Radeon HD 4350/4550
       RV730       Radeon HD 4650/4670
       RV770       Radeon HD 4850/4870
       CEDAR       Radeon HD 5450
       REDWOOD     Radeon HD 5550/5570/5670
       JUNIPER     Radeon HD 5750/5770
       CYPRESS     Radeon HD 5850/5870
       HEMLOCK     Radeon HD 5970
       PALM        Radeon HD 6310/6250
       BARTS       Radeon HD 6850/6870
       TURKS       Radeon HD 6570/6670
       CAICOS      Radeon HD 6450
       CAYMAN      Radeon HD 6950/6970/6990


       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 for UMS (Userspace Modesetting):

           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  for  both  UMS
       (Userspace Modesetting) and KMS (Kernel Modesetting):

       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 "ZaphodHeads" "string"
              Specify  the  RandR  output(s)  to  use  with  zaphod mode for a
              particular driver instance.  If you use this option you must use
              this option for all instances of the driver.
              For  example:  Option  "ZaphodHeads"  "LVDS,VGA-0"  will  assign
              xrandr outputs LVDS and VGA-0 to this instance of the driver.

       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 known
              to cause instability on some chips.  The default is off.

       The   following   driver   Options   are   supported  for  KMS  (Kernel

       Option "ColorTiling" "boolean"
              The framebuffer can be addressed either in linear or tiled mode.
              Tiled  mode can provide significant performance benefits with 3D
              applications.  Tiling will be disabled if the drm module is  too
              old or if the current display configuration does not support it.
              KMS  ColorTiling  is  not  currently  supported  on  R/RV/RS1XX,
              R/RV/RS2XX, and RS3XX.
              The  default  value  is on for R/RV3XX, R/RV4XX, R/RV5XX, RS6XX,
              RS740, R/RV6XX, R/RV7XX, RS780, RS880, EVERGREEN, and CAYMAN.

       Option "EXAPixmaps" "boolean"
              Under KMS, to avoid thrashing pixmaps  in/out  of  VRAM  on  low
              memory  cards,  we  use  a  heuristic  based  on  VRAM amount to
              determine whether to allow EXA to  use  VRAM  for  non-essential
              pixmaps.   This option allows us to override the heuristic.  The
              default is on with > 32MB VRAM, off with < 32MB.

       Option "SwapbuffersWait" "boolean"
              This  option  controls  the  behavior  of   glXSwapBuffers   and
              glXCopySubBufferMESA  calls by GL applications.  If enabled, the
              calls will avoid tearing by making sure the display scanline  is
              outside  of  the  area  to be copied before the copy occurs.  If
              disabled, no  scanline  synchronization  is  performed,  meaning
              tearing  will likely occur.  Note that when enabled, this option
              can adversely affect the framerate of applications  that  render
              frames at less than refresh rate.

              The default value is on.

       Option "EnablePageFlip" "boolean"
              Enable  DRI2 page flipping.  The default is on.  Pageflipping is
              supported on all radeon hardware.

       The  following  driver  Options  are  supported  for   UMS   (Userspace

       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.  This should be set automatically,  but
              no  one  knows  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 that this only affects the "true" overlay via
              Xv, and 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 an AGP card to PCI mode. You 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"
              The framebuffer 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 and the drm module is too old.
              If this option is enabled, a new  DRI  driver  is  required  for
              direct rendering.
              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.  DDC is still used for
              monitor detection. This is different from NoDDC option.
              The default value is off.

       Option "CustomEDID" "string"
              Forces  the  X  driver  to use the EDID data specified in a file
              rather than the  display's  EDID.  Also  overrides  DDC  monitor
              You  may  specify  a semicolon-separated list of output name and
              filename pairs with an optional flag, "digital" or "analog",  to
              override the digital bit in the EDID which is used by the driver
              to determine whether  to  use  the  analog  or  digital  encoder
              associated  with  a  DVI-I  port.   The output name is the RandR
              output name, e.g., "VGA-0" or "DVI-0"; consult the Xorg log  for
              the supported output names of any given system.
              The  file must contain a raw 128-byte EDID block, as captured by
              For   example:   Option   "CustomEDID"    "VGA-0:/tmp/edid1.bin;
              DVI-0:/tmp/edid2.bin:digital" will assign the EDID from the file
              /tmp/edid1.bin to the output device VGA-0, and the EDID from the
              file /tmp/edid2.bin to the output device DVI-0 and force the DVI
              port to use the digital encoder.
              Note that an output name must always be specified, even if  only
              one EDID is specified.
              Caution:  Specifying  an  EDID  that  doesn't exactly match your
              display may damage your hardware, as it  allows  the  driver  to
              specify  timings  beyond  the  capabilities of your display. Use
              with care.

       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  using  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.  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 "ClockGating" "boolean"
              Enable dynamic clock gating.  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 "ForceLowPowerMode" "boolean"
              Enable  a  static low power mode.  This can help reduce heat and
              increase battery life by reducing power usage at the expense  of
              performance. The default is off.

       Option "DynamicPM" "boolean"
              Enable  dynamic power mode switching.  This can help reduce heat
              and increase battery life  by  reducing  power  usage  when  the
              system is idle (DPMS active). The default is 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.

       Option "ReverseDDC" "boolean"
              When BIOS connector information isn't available, use this option
              to reverse the mapping of the two 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   information   isn'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 "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_CRTC is used to control which display controller  (crtc)  the
              textured  adapter  synchronizes  the  screen  update  with  when
              XV_VSYNC is enabled.  The default, 'auto'(-1), will sync to  the
              display  controller  that  more of the video is on; when this is
              ambiguous, the display  controller  associated  with  the  RandR
              primary  output  is  preferred.   This  attribute  is useful for
              things like clone mode where the  user  can  best  decide  which
              display should be synced.  The default is 'auto'(-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 to avoid blurred output.  Bicubic filtering  is  not
              currently   compatible   with  other  Xv  attributes  like  hue,
              contrast, and brightness, and must  be  disabled  to  use  those
              attributes.  The default is 'off'(0).


       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 Danzer  
       Alex Deucher   
       Bogdan D.      
       Eric Anholt