1AMDGPU(4)                  Kernel Interfaces Manual                  AMDGPU(4)
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NAME

6       amdgpu - AMD RADEON GPU video driver
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SYNOPSIS

9       Section "Device"
10         Identifier "devname"
11         Driver "amdgpu"
12         ...
13       EndSection
14

DESCRIPTION

16       amdgpu is an Xorg driver for AMD RADEON-based video cards with the fol‐
17       lowing features:
18
19       · Support for 8-, 15-, 16-, 24- and 30-bit pixel depths;
20       · RandR support up to version 1.4;
21       · 3D acceleration;
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SUPPORTED HARDWARE

24       The amdgpu driver supports SI and newer families' video cards.
25

CONFIGURATION DETAILS

27       Please refer to xorg.conf(5) for general configuration  details.   This
28       section only covers configuration details specific to this driver.
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30       The following driver Options are supported:
31
32       Option "SWcursor" "boolean"
33              Selects software cursor.  The default is off.
34
35       Option "Accel" "boolean"
36              Enables or disables all hardware acceleration.
37              The default is on.
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39
40       Option "ZaphodHeads" "string"
41              Specify  the  RandR output(s) to use with zaphod mode for a par‐
42              ticular driver instance.  If you use this option  you  must  use
43              this option for all instances of the driver.
44              For  example:  Option  "ZaphodHeads"  "LVDS,VGA-0"  will  assign
45              xrandr outputs LVDS and VGA-0 to this instance of the driver.
46
47       Option "DRI" "integer"
48              Define the maximum level of DRI to enable. Valid  values  are  2
49              for  DRI2  or 3 for DRI3.  The default is 3 for DRI3 if the Xorg
50              version is >= 1.18.3, otherwise 2 for DRI2.
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52       Option "EnablePageFlip" "boolean"
53              Enable DRI2 page flipping.  The default is on.
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55       Option "TearFree" "boolean"
56              Set the default value of  the  per-output  'TearFree'  property,
57              which  controls tearing prevention using the hardware page flip‐
58              ping mechanism. TearFree is on for any CRTC associated with  one
59              or  more  outputs with TearFree on. Two separate scanout buffers
60              need to be allocated for each CRTC with  TearFree  on.  If  this
61              option  is  set,  the  default  value of the property is 'on' or
62              'off' accordingly. If this option isn't set, the  default  value
63              of  the  property  is  auto, which means that TearFree is on for
64              rotated outputs, outputs with RandR transforms applied  and  for
65              RandR 1.4 slave outputs, otherwise off.
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67       Option "VariableRefresh" "boolean"
68              Enables  support  for  enabling variable refresh on the Screen's
69              CRTCs when an suitable application is flipping via  the  Present
70              extension.
71              The default is off.
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73       Option "AccelMethod" "string"
74              Setting this option to none disables use of the glamor accelera‐
75              tion architecture. In that case, all 2D rendering is done by the
76              CPU, but 3D and video hardware acceleration can still work. This
77              is mainly useful for OpenGL driver bring-up.
78              The default is to use glamor.
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80
81       The following driver Option is supported for glamor :
82
83       Option "ShadowPrimary" "boolean"
84              This option enables a so-called "shadow primary" buffer for fast
85              CPU  access to pixel data, and separate scanout buffers for each
86              display controller (CRTC).  This  may  improve  performance  for
87              some 2D workloads, potentially at the expense of other (e.g. 3D,
88              video) workloads.  Note in particular that enabling this  option
89              currently disables page flipping.  The default is off.
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91

SEE ALSO

93       Xorg(1), xorg.conf(5), Xserver(1), X(7)
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95        1. Wiki page:
96           https://www.x.org/wiki/radeon
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98        2. Overview about amdgpu development code:
99           https://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu/
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101        3. Mailing list:
102           https://lists.freedesktop.org/mailman/listinfo/amd-gfx
103
104        4. IRC channel:
105           #radeon on irc.freenode.net
106
107        5. Query the bugtracker for amdgpu bugs:
108           https://bugs.freedesktop.org/query.cgi?product=xorg&compo‐
109           nent=Driver/AMDgpu
110
111        6. Submit bugs & patches:
112           https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&compo‐
113           nent=Driver/AMDgpu
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AUTHORS

117       Authors include:
118       Michel Dänzer            michel@daenzer.net
119       Alex Deucher             alexdeucher@gmail.com
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123X Version 11               xf86-video-amdgpu 19.1.0                  AMDGPU(4)
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