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RADEON(4)							     RADEON(4)

NAME
       radeon - ATI RADEON video driver

SYNOPSIS
       Section "Device"
	 Identifier "devname"
	 Driver "radeon"
	 ...
       EndSection

DESCRIPTION
       radeon is an Xorg driver for ATI RADEON based video cards with the fol‐
       lowing 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.  Experi‐
	 mental 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/RS740);
       · Overlay  XVideo  acceleration	(only	on   R/RV/RS1xx,   R/RV/RS2xx,
	 R/RV/RS3xx, R/RV/RS4xx);
       · 3D acceleration;

SUPPORTED HARDWARE
       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
       RV505/RV515/RV516/RV550
		   Radeon X1300/X1400/X1500/X2300
       R520	   Radeon X1800
       RV530/RV560 Radeon X1600/X1650/X1700
       RV570/R580  Radeon X1900/X1950
       RS600/RS690/RS740
		   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

CONFIGURATION DETAILS
       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 (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
	      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 horizon‐
	      tal  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 "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
	      detection.
	      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	 asso‐
	      ciated  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
	      get-edid.
	      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 a output name must always be specified, even  if  only
	      one EDID is specified.
	      Caution: Specifying an EDID that doesn't exactly match your dis‐
	      play may damage your hardware, as it allows the driver to	 spec‐
	      ify  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  col‐
	      lected  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 fre‐
	      quency 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  sup‐
	      ported  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.	 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 off‐
	      screen 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
	      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 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
	      off.

       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  sys‐
	      tem 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  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 Power‐
	      Books), 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 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	 prop‐
	      erly,  try  the alternate options as Apple does not seem to pro‐
	      vide 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 some‐
	      thing other than the bios default. Valid options are:
	      ntsc
	      pal
	      pal-m
	      pal-60
	      ntsc-j
	      scart-pal
	      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.

       Option "EXAPixmaps" "boolean"
	      (KMS Only) Under kernel modesetting 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
	      heurisitc.  The default is on with > 32MB VRAM, off with < 32MB.

       Option "ZaphodHeads" "string"
	      Specify the randr output(s) to use with zaphod mode for  a  par‐
	      ticular  driver  instance.   If you use this option you most 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.

TEXTURED VIDEO ATTRIBUTES
       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
	      XV_VSYNC is used to control whether  textured  adapter  synchro‐
	      nizes the screen update to the monitor vertical refresh to elim‐
	      inate tearing.  It has two values:  'off'(0)  and	 'on'(1).  The
	      default is 'on'(1).

       XV_CRTC
	      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.	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
	      XV_BICUBIC  is  used  to control whether textured adapter should
	      apply a bicubic filter to smooth the output. It has  three  val‐
	      ues:  '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, con‐
	      trast, and  brightness,  and  must  be  disabled	to  use	 those
	      attributes.  The default is 'off'(0).

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

	1. Wiki page:
	   http://www.x.org/wiki/radeon

	2. Overview about radeon development code:
	   http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/

	3. Mailing list:
	   http://lists.x.org/mailman/listinfo/xorg-driver-ati

	4. IRC channel:
	   #radeon on irc.freenode.net

	5. Query the bugtracker for radeon bugs:
	   https://bugs.freedesktop.org/query.cgi?product=xorg&compo‐
	   nent=Driver/Radeon

	6. Submit bugs & patches:
	   https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&compo‐
	   nent=Driver/Radeon

AUTHORS
       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 Dänzer		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 6.13.1		     RADEON(4)
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