1 .\" $NetBSD: drm.4,v 1.7 2009/05/12 08:16:46 wiz Exp $
3 .\" Copyright (c) 2007 Thomas Klausner
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26 .Dd September 13, 2013
31 .Nd Direct Rendering Manager (DRI kernel support)
34 .Tn Direct Rendering Manager
36 .Tn Direct Rendering Infrastructure
38 .Pa http://dri.freedesktop.org/ )
39 for supporting video acceleration.
40 For older chipsets it's used for 3d acceleration only, but newer chipsets
43 for 2d acceleration (XVideo, EXA) as well.
47 drivers provide support for the following chipsets:
48 .Bl -column -offset indent ".Sy ModuleXXX" ".Sy Kernel option" ".Sy Chipset"
49 .It Sy Module Ta Sy "Kernel option" Ta Sy Chipset
50 .It Pa i915kms.ko Ta n/a Ta Intel i915, i945, i965, G3x, G4x
51 .It Pa mach64.ko Ta Cd mach64drm Ta Mach64 (3D Rage Pro, Rage)
52 .It Pa mga.ko Ta Cd mgadrm Ta Matrox G[24]00, G[45]50
53 .It Pa r128.ko Ta Cd r128drm Ta Rage 128
54 .It Pa radeon.ko Ta Cd radeondrm Ta Radeon
55 .It Pa savage.ko Ta Cd savagedrm Ta S3 Savage
56 .It Pa sis.ko Ta Cd sisdrm Ta SiS
57 .It Pa tdfx.ko Ta Cd tdfxdrm Ta 3dfx (Voodoo)
58 .\".It Pa via.ko Ta Cd viadrm Ta VIA
63 will take care of loading the appropriate modules and it is not necessary to
66 or the kernel configuration to enable
74 do a pretty good job of figuring out the right configuration on their own,
77 file at all is usually the best advice.
80 is preferred, DRI must be enabled:
88 With KMS, DRI is always enabled since the
92 .\"In order to use two graphics cards (an on-board and another
93 .\"AGP/PCI/PCIe card) with DRI, a
97 .\"has to be created using
102 acceleration fails to initialize with a
103 .Dq contigmalloc_map: failed size...
104 error in dmesg, the reserve of memory for DMA ran out early and should
105 be increased to a sufficiently high value by setting the
110 variable of the same name is provided for obtaining its current value.
112 Debugging output can be enabled and disabled by setting the
120 DRM was first available for Linux.
121 Subsequently Eric Anholt ported the DRM kernel modules to
124 Disable AIGLX if necessary
126 .Bd -literal -offset indent
127 Section "ServerFlags"
131 .\"Section "Extensions"
132 .\" Option "Composite" "Disable"
136 .Cd options DRM_DEBUG
137 can slow DRI down a lot, disable it once