Matrox G200 

01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200 AGP (rev 01) (prog-if 00 [VGA])
        Subsystem: Matrox Graphics, Inc. Millennium G200 AGP
        Flags: bus master, medium devsel, latency 64, IRQ 11
        Memory at e3000000 (32-bit, prefetchable) [size=16M]
        Memory at e2000000 (32-bit, non-prefetchable) [size=16K]
        Memory at e1800000 (32-bit, non-prefetchable) [size=8M]
        Expansion ROM at e2ff0000 [disabled] [size=64K]
        Capabilities: [dc] Power Management version 1
        Capabilities: [f0] AGP version 1.0
The matrox driver is big and complex. I got lucky on first attempt, when setting features.pll.vco_freq_min to a 6200 in matroxfb_DAC1064.c.

Matrox Millenium g450

The card I have identified by lspci: 
01:00.0 VGA compatible controller: Matrox Graphics, Inc. G400/G450 (rev 82) (prog-if 00 [VGA])
        Subsystem: Matrox Graphics, Inc. Millennium G450 32Mb SDRAM Dual Head
        Flags: bus master, medium devsel, latency 64, IRQ 11
        Memory at e2000000 (32-bit, prefetchable) [size=32M]
        Memory at e1000000 (32-bit, non-prefetchable) [size=16K]
        Memory at e0800000 (32-bit, non-prefetchable) [size=8M]
        Expansion ROM at e1fe0000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2
        Capabilities: [f0] AGP version 2.0
same driver-framework as the g200, different hardware.

page was last modified: March 13 2007 18:40 CET