Section: Devices and Network Interfaces (4)
Updated: xf86-video-openchrome 0.3.3
Section "Device" Identifier "devname" Driver "openchrome" ... EndSection
openchrome is an Xorg driver for VIA chipsets that have an integrated Unichrome graphics engine.
The openchrome driver supports the following chipsets: CLE266, KM400/KN400/KM400A/P4M800, CN400/PM800/PN800/PM880, K8M800, CN700/VM800/P4M800Pro, CX700, P4M890, K8M890, P4M900/VN896/CN896, VX800, VX855 and VX900. The driver includes 2D acceleration and Xv video overlay extensions. Flat panel, TV, and VGA outputs are supported, depending on the hardware configuration.
3D direct rendering is available using experimental drivers from Mesa (www.mesa3d.org). There is also an XvMC client library for hardware acceleration of MPEG1/MPEG2 decoding (not available on the KM/N400) that uses the Direct Rendering Infrastructure (DRI). The XvMC client library implements a non-standard "VLD" extension to the XvMC standard. The current Direct Rendering Manager (DRM) kernel module is available at dri.sourceforge.net.
The driver supports free modes for Unichrome Pros (K8M800/K8N800, PM800/PN800, and CN400). For plain Unichromes (CLE266, KM400/KN400), it currently supports only a limited number of dotclocks, so if you are using X modelines you must make sure that the dotclock is one of those supported. Supported dotclocks on plain Unichromes are currently (in MHz): 25.2, 25.312, 26.591, 31.5, 31.704, 32.663, 33.750, 35.5, 36.0, 39.822, 40.0, 41.164, 46.981, 49.5, 50.0, 56.3, 57.284, 64.995, 65.0, 65.028, 74.480, 75.0, 78.8, 81.613, 94.5, 108.0, 108.28, 122.0, 122.726, 135.0, 148.5, 155.8, 157.5, 161.793, 162.0, 175.5, 189.0, 202.5, 204.8, 218.3, 229.5. On top of this, bandwidth restrictions apply for both Unichromes and Unichrome Pros.
Please refer to (5) for general configuration details. This section only covers configuration details specific to this driver.
The following driver options are supported:
Unichromes tend to be paired with several different TV encoders.
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