Provided by: xserver-xorg-video-amdgpu_19.1.0-1ubuntu0.1_amd64 bug


       amdgpu - AMD RADEON GPU video driver


       Section "Device"
         Identifier "devname"
         Driver "amdgpu"


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

       • Support for 8-, 15-, 16-, 24- and 30-bit pixel depths;
       • RandR support up to version 1.4;
       • 3D acceleration;


       The amdgpu driver supports SI and newer families' video cards.


       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
              For example: Option "ZaphodHeads" "LVDS,VGA-0" will assign xrandr outputs LVDS  and
              VGA-0 to this instance of the driver.

       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, otherwise 2  for

       Option "EnablePageFlip" "boolean"
              Enable DRI2 page flipping.  The default is on.

       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 "VariableRefresh" "boolean"
              Enables support for enabling  variable  refresh  on  the  Screen's  CRTCs  when  an
              suitable application is flipping via the Present extension.
              The default is off.

       Option "AccelMethod" "string"
              Setting  this  option to none disables use of the glamor acceleration architecture.
              In that case, all 2D rendering is done by  the  CPU,  but  3D  and  video  hardware
              acceleration can still work. This is mainly useful for OpenGL driver bring-up.
              The default is to use glamor.

       The following driver Option is 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.


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

        1. Wiki page:

        2. Overview about amdgpu development code:

        3. Mailing list:

        4. IRC channel:
           #radeon on

        5. Query the bugtracker for amdgpu bugs:

        6. Submit bugs & patches:


       Authors include:
       Michel Dänzer  
       Alex Deucher