trusty (4) amdgpu.4.gz

NAME

       amdgpu - AMD RADEON GPU video driver

SYNOPSIS

       Section "Device"
         Identifier "devname"
         Driver "amdgpu"
         ...
       EndSection

DESCRIPTION

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

       • Support for 24-bit pixel depth;
       • RandR support up to version 1.4;
       • 3D acceleration;

SUPPORTED HARDWARE

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

CONFIGURATION DETAILS

       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 "DRI" "integer"
              Define the maximum level of DRI to enable. Valid values are 2 for DRI2 or 3 for DRI3.  The default
              is 2 for DRI2.

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

       Option "TearFree" "boolean"
              Enable  tearing  prevention  using  the  hardware  page  flipping mechanism. This option currently
              doesn't have any effect for CRTCs using transforms other than rotation or reflection. It  requires
              allocating  two  separate  scanout buffers for each supported CRTC. Enabling this option currently
              disables Option "EnablePageFlip". 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.

SEE ALSO

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

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

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

        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 amdgpu bugs:
           https://bugs.freedesktop.org/query.cgi?product=xorg&component=Driver/AMDgpu

        6. Submit bugs & patches:
           https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/AMDgpu

AUTHORS

       Authors include:
       Michel Dänzer            michel@daenzer.net
       Alex Deucher             alexdeucher@gmail.com