Provided by: xserver-xorg-video-radeon_6.14.99~git20111219.aacbd629-0ubuntu2_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 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).
       · 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
       · Overlay   XVideo   acceleration   (only  on  R/RV/RS1xx,  R/RV/RS2xx,
         R/RV/RS3xx, R/RV/RS4xx);
       · 3D acceleration;


       The radeon driver supports PCI, AGP, and PCIE video cards based on  the
       following ATI chips (note: list is non-exhaustive):

       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/X1550/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 2400/2600/2700/4200/4225/4250
       RV620/RV635 Radeon HD 3410/3430/3450/3470/3650/3670
       RV670       Radeon HD 3690/3850/3870
       RS780/RS880 Radeon HD 3100/3200/3300/4100/4200/4250/4290
       RV710/RV730 Radeon                                                   HD
                   Radeon HD 4770/4730/4830/4850/4860/4870/4890
       CEDAR       Radeon HD 5430/5450/6330/6350/6370
       REDWOOD     Radeon HD 5550/5570/5650/5670/5730/5750/5770/6530/6550/6570
       JUNIPER     Radeon HD 5750/5770/5830/5850/5870/6750/6770/6830/6850/6870
       CYPRESS     Radeon HD 5830/5850/5870
       HEMLOCK     Radeon HD 5970
       PALM        Radeon HD 6310/6250
       SUMO/SUMO2  Radeon HD 6370/6380/6410/6480/6520/6530/6550/6620
       BARTS       Radeon HD 6790/6850/6870/6950/6970/6990
       TURKS       Radeon HD 6570/6630/6650/6670/6730/6750/6770
       CAICOS      Radeon HD 6430/6450/6470/6490
       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 Dänzer  
       Alex Deucher   
       Bogdan D.      
       Eric Anholt