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RADEON(4x)									       RADEON(4x)

       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  R/RV/RS1xx,  R/RV/RS2xx, R/RV/RS3xx. Experimental support on
	 R/RV5xx, R/RV6xx, and R/RV7xx through the ATOMTvOut option);
       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
       o Textured XVideo acceleration including  anti-tearing  support	(Bicubic  filtering  only
	 available on R/RV3xx, R/RV/RS4xx, R/RV5xx, and RS6xx);
       o Overlay XVideo acceleration (only on R/RV/RS1xx, R/RV/RS2xx, R/RV/RS3xx, R/RV/RS4xx);
       o 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

       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 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 acceleration.

       Option "Dac6Bit" "boolean"
	      Enables or disables the use of 6 bits per color component when in 8 bpp mode  (emu-
	      lates 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 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 pro-
	      vide 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
	      The default value is on.

       Option "IgnoreEDID" "boolean"
	      Do  not use EDID data for mode validation, but DDC is still used for monitor detec-
	      tion. 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  unsuit-
	      able  (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  possi-
	      bly 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 acceler-
	      ated 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 depth.

       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 deci-
	      mation 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 set-
	      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 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 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 on.

       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

       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 power-
	      book 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 con-
	      troller has passed the destination region.  It reduces tearing at the cost of  per-
	      formance 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

       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 fil-
	      ter 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 'auto'(2).

       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 irc.freenode.net

	5. Query the bugtracker for radeon bugs:

	6. Submit bugs & patches:

       Authors include:
       Rickard E. (Rik) Faith	faith@precisioninsight.com
       Kevin E. Martin		kem@freedesktop.org
       Alan Hourihane		alanh@fairlite.demon.co.uk
       Marc Aurele La France	tsi@xfree86.org
       Benjamin Herrenschmidt	benh@kernel.crashing.org
       Michel Danzer		michel@tungstengraphics.com
       Alex Deucher		alexdeucher@gmail.com
       Bogdan D.		bogdand@users.sourceforge.net
       Eric Anholt		eric@anholt.net

X Version 11			      xf86-video-ati 6.12.2			       RADEON(4x)
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