selects who is source of display clocks, whether G400, or panel.
Default value is now read back from hardware - so you should specify
this value only if you are also using `init' parameter.
+outputs:XYZ - set mapping between CRTC and outputs. Each letter can have value
+ of 0 (for no CRTC), 1 (CRTC1) or 2 (CRTC2), and first letter corresponds
+ to primary analog output, second letter to the secondary analog output
+ and third letter to the DVI output. Default setting is 100 for
+ cards below G400 or G400 without DFP, 101 for G400 with DFP, and
+ 111 for G450 and G550. You can set mapping only on first card,
+ use matroxset for setting up other devices.
vesa:X - selects startup videomode. X is number from 0 to 0x1FF, see table
above for detailed explanation. Default is 640x480x8bpp if driver
has 8bpp support. Otherwise first available of 640x350x4bpp,