intelfb with 855GME and DVI?

Hi,

I have an obscure Pentium M motherboard with 855GME graphics 
(http://www.ibase-i.com.tw/mb890.htm) which I'm trying to use with a DVI 
monitor for video playback.  On compiling intelfb into 2.6.20, the fb 
fails to load with a boot option of video=intelfb:1024x768-24@75 with

intelfb: intelfb_init
intelfb: Framebuffer driver for Intel(R) 830M/845G/852GM/855GM/865G/915G/915GM/945G/945GM chipsets
intelfb: Version 0.9.4
intelfb: intelfb_setup
intelfb: options: 1024x768-24@75
intelfb: intelfb_pci_register
intelfb: fb aperture: 0xd8000000/0x8000000, MMIO region: 0xec080000/0x80000
intelfb: 00:02.0: Intel(R) 855GME, aperture size 128MB, stolen memory 32636kB
intelfb: fb: 0xd8000000(+ 0x0)/0x1fdf000 (0xde980000)
intelfb: MMIO: 0xec080000/0x80000 (0xe3980000)
intelfb: ring buffer: 0xdb001000/0x10000 (0xe1981000)
intelfb: HW cursor: 0x0/0x0 (0x00000000) (offset 0x0) (phys 0x0)
intelfb: options: vram = 4, accel = 1, hwcursor = 0, fixed = 0, noinit = 0
intelfb: options: mode = "1024x768-24@75"
intelfb: Non-CRT device is enabled ( DVO port C ).  Disabling mode switching.
intelfb: Video mode must be programmed at boot time.
intelfb: cleanup

I'm confused: I thought that I /was/ trying to program the video mode at 
boot time by specifying the video= boot option.  Or is this trying to tell 
me that there's actually no support of Non-CRT at all?  Specifying vga= 
options in lilo.conf and disabling/enabling vesafb doesn't seem to alter 
the behaviour.

Should this work?

thanks,

Matthew.

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