4.15. DirectFB/Matrox (dfbmga)
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## 4.15. DirectFB/Matrox (dfbmga)

Please read the main DirectFB section for general information.

This video output driver will enable CRTC2 (on the second head) on Matrox G400/G450/G550 cards, displaying video independent of the first head.

Ville Syrjala's has a README and a HOWTO on his homepage that explain how to make DirectFB TV output run on Matrox cards.

### 注意

the first DirectFB version with which we could get this working was 0.9.17 (it's buggy, needs that `surfacemanager` patch from the URL above). Porting the CRTC2 code to mga_vid has been planned for years, patches are welcome.

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