RADEON(4)                   Kernel Interfaces Manual                   RADEON(4)

       radeon - ATI/AMD RADEON video driver

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

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

       • Full support for 8-, 15-, 16- and 24-bit pixel depths, and for 30-bit
         depth on Linux 3.16 and later;
       • RandR 1.2 and RandR 1.3 support;
       • Full EXA 2D acceleration;
       • Textured XVideo acceleration including anti-tearing support (Bicubic
         filtering only available on R/RV3xx, R/RV/RS4xx, R/RV5xx, and
       • 3D acceleration;

       The radeon driver supports PCI, AGP, and PCIe video cards based on the
       following ATI/AMD 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
       ARUBA       Radeon HD 7000 series
       TAHITI      Radeon HD 7900 series
       PITCAIRN    Radeon HD 7800 series
       VERDE       Radeon HD 7700 series
       OLAND       Radeon HD 8000 series
       HAINAN      Radeon HD 8000 series
       BONAIRE     Radeon HD 7790 series
       KAVERI      KAVERI APUs
       KABINI      KABINI APUs
       HAWAII      Radeon R9 series

       Please refer to xorg.conf(5) for general configuration details.  This
       section only covers configuration details specific to this driver.

       The following driver Options are supported:

       Option "SWcursor" "boolean"
              Selects software cursor.  The default is off.

       Option "Accel" "boolean"
              Enables or disables all hardware acceleration.
              The default is on.

       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 "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.
              On R600+ this enables 1D tiling mode.
              The default value is on for R/RV3XX, R/RV4XX, R/RV5XX, RS6XX,
              RS740, R/RV6XX, R/RV7XX, RS780, RS880, EVERGREEN, CAYMAN, ARUBA,
              Southern Islands, and Sea Islands and off for R/RV/RS1XX,
              R/RV/RS2XX, RS3XX, and RS690/RS780/RS880 when fast fb feature is

       Option "ColorTiling2D" "boolean"
              The framebuffer can be addressed either in linear, 1D, or 2D tiled
              modes. 2D tiled mode can provide significant performance benefits
              over 1D tiling 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 ColorTiling2D is only supported on R600
              and newer chips and requires Mesa 9.0 or newer for R6xx-ARUBA,
              Mesa 9.2 or newer for Southern Islands, and Mesa 10.1 or newer for
              Sea Islands.
              The default value is on for R/RV6XX, R/RV7XX, RS780, RS880,
              EVERGREEN, CAYMAN, ARUBA, Southern Islands, and Sea Islands.

       Option "DRI" "integer"
              Define the maximum level of DRI to enable. Valid values are 2 for
              DRI2 or 3 for DRI3.  The default is 3 for DRI3 if the Xorg version
              is >= 1.18.3 and glamor is enabled, otherwise 2 for DRI2. Note:
              DRI3 may not work correctly in all cases with EXA, enable at your
              own risk.

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

       Option "TearFree" "boolean"
              Set the default value of the per-output 'TearFree' property, which
              controls tearing prevention using the hardware page flipping
              mechanism. TearFree is on for any CRTC associated with one or more
              outputs with TearFree on. Two separate scanout buffers need to be
              allocated for each CRTC with TearFree on. If this option is set,
              the default value of the property is 'on' or 'off' accordingly. If
              this option isn't set, the default value of the property is auto,
              which means that TearFree is on for rotated outputs, outputs with
              RandR transforms applied and for RandR 1.4 slave outputs,
              otherwise off.

       Option "AccelMethod" "string"
              Chooses between available acceleration architectures.  Valid
              values are EXA (for pre-TAHITI GPUs) and glamor (for R300 or
              higher). The default is glamor with R600 or newer (with Xorg >=
              1.18.3, otherwise with TAHITI or newer), otherwise EXA.

       The following driver Options are supported for glamor :

       Option "ShadowPrimary" "boolean"
              This option enables a so-called "shadow primary" buffer for fast
              CPU access to pixel data, and separate scanout buffers for each
              display controller (CRTC).  This may improve performance for some
              2D workloads, potentially at the expense of other (e.g. 3D, video)
              workloads.  Note in particular that enabling this option currently
              disables page flipping.  The default is off.

       The following driver Options are supported for EXA :

       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.

       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 or when fast fb feature is
              enabled for RS690/RS780/RS880.

       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.

       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

              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 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 Dänzer            michel@daenzer.net
       Alex Deucher             alexdeucher@gmail.com
       Bogdan D.                bogdand@users.sourceforge.net
       Eric Anholt              eric@anholt.net

X Version 11                  xf86-video-ati 19.1.0                    RADEON(4)