problem w. Intel 82G965 graphics controller (Set VBE mode failed)

[Jens Stroebel]

		Hiya.

I'm using a git-checked out Xorg tree (2006-12-08 15.42 CET).
On our boxen w. "ATI RV370 5B60 [Radeon X300 (PCIE)]", everything is fine.

On those with "Intel 82G965 graphics controller", the server is unable
to start up, complaining

#########################################################################
(II) I810(0): VESA VBE DDC supported
(II) I810(0): VESA VBE DDC Level 2
(II) I810(0): VESA VBE DDC transfer in appr. 1 sec.
(II) I810(0): VESA VBE DDC read failed
(II) I810(0): Will use BIOS call 0x5f05 to set refresh rates for CRTs.
	..
	..
	..
	..
	..
(WW) I810(0): Extended BIOS function 0x5f05 not supported.
(II) I810(0): BIOS call 0x5f05 not supported, setting refresh with VBE 3 method.
(EE) I810(0): Set VBE Mode failed!
#########################################################################
.. after which the display is totally unusable. 

Just for curiosities sake (and to get at least any X running), I tried
the vesa driver, which should at least give basic functionality, I thought.
Because of failing VBE DDC read, I nailed 
======================================
        HorizSync    31.5 - 48.5
        VertRefresh  50.0 - 90.0
======================================
to escape "no usable configurations found...".
Still, there is no possibility to get a usable X:
#########################################################################
(II) VESA(0): VESA VBE DDC supported
(II) VESA(0): VESA VBE DDC Level 2
(II) VESA(0): VESA VBE DDC transfer in appr. 1 sec.
(II) VESA(0): VESA VBE DDC read failed
(II) VESA(0): Searching for matching VESA mode(s):
	..
	..
	..
	..
	..
(II) VESA(0): VESA VBE OEM: Intel(r)Broadwater-G Graphics Chip Accelerated VGA BIOS
(II) VESA(0): VESA VBE OEM Software Rev: 1.0
(II) VESA(0): VESA VBE OEM Vendor: Intel Corporation
(II) VESA(0): VESA VBE OEM Product: Intel(r)Broadwater-G Graphics Controller
(II) VESA(0): VESA VBE OEM Product Rev: Hardware Version 0.0
(II) VESA(0): virtual address = 0xb7aa5000,
        physical address = 0xa0000, size = 65536
(II) VESA(0): VBESetVBEMode failed
(EE) VESA(0): Set VBE Mode failed!
#########################################################################

The display, at least, keeps being usable.  (well...).

Looking around a little, I tried the modesetting branch of the xf86-video-intel
driver as well, but it didn't solve the issue.
While it didn't bail out at startup, it also didn't succeed in showing anything;
it just didn't react to that :) , giving a blank screen with
"Wrong frequency" - message, after which the display was as unusable as was
the case with the i810 driver (HEAD).

I tried the released xf-video-i810-1.7.3 too, for reasons of completeness:
	same result as with xf86-video-intel (HEAD).

The motherboard on which the integrated G965 chipset is living is an ASUS P5B-vm,
is anything known about a (Video-)BIOS problem with it?

			Greets,
			  Jens
-- 
dr-xorg at bcsoft.de
		23.....56.......drifting