Hello,
yesterday i look that xorg 6.8.2 is out. I was happy because it can patch bug
with i810 cards (see release information). But i don't know why it don't.
I get unofficial patch for FreeBSD from freebsd-x11 mailing list (see
http://lists.freebsd.org/pipermail/freebsd-x11/2005-February/001647.html in that
mailing list) and applying it, then i run portupgrade -aF xorg and portupgrade
-aR xorg. Compilation without errors. Freebsd patch works probably ok.
BUT after compilation, i try run and still getting as before with 6.8.1 this errors:

(II) I810(0): VESA BIOS detected
(II) I810(0): VESA VBE Version 3.0
(II) I810(0): VESA VBE Total Mem: 16192 kB
(II) I810(0): VESA VBE OEM: Intel(r)852MG/852MGE/855MG/855MGE Graphics Chip
Accelerated VGA BIOS
(II) I810(0): VESA VBE OEM Software Rev: 1.0
(II) I810(0): VESA VBE OEM Vendor: Intel Corporation
(II) I810(0): VESA VBE OEM Product: Intel(r)852MG/852MGE/855MG/855MGE Graphics
Controller
(II) I810(0): VESA VBE OEM Product Rev: Hardware Version 0.0
(==) I810(0): Default visual is TrueColor
(II) I810(0): Allocated 128 kB for the ring buffer at 0x0
(II) I810(0): Allocating at least 768 scanlines for pixmap cache
(II) I810(0): Initial framebuffer allocation size: 3072 kByte
(II) I810(0): Allocated 4 kB for HW cursor at 0x7fff000 (0x03796000)
(WW) I810(0): xf86AllocateGARTMemory: allocation of 4 pages failed
        (Cannot allocate memory)
(EE) I810(0): Failed to allocate HW (ARGB) cursor space.
(II) I810(0): Allocated 4 kB for Overlay registers at 0x7ffe000 (0x01697000).
(II) I810(0): Allocated 64 kB for the scratch buffer at 0x7fee000
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is -1, (No such file or directory)
drmOpenDevice: open result is -1, (No such file or directory)
drmOpenDevice: Open failed
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is -1, (No such file or directory)
drmOpenDevice: open result is -1, (No such file or directory)
drmOpenDevice: Open failed
[drm] failed to load kernel module "i915"
(II) I810(0): [drm] drmOpen failed
(EE) I810(0): [dri] DRIScreenInit failed. Disabling DRI.

I have 5.3-RELEASE kernel, cvsuped and fresh (2 or 3 days before) portupgraded
system. Runing before xorg-6.8.1 was broken too :-( In xorg.conf a loading dri
and gl modules + section dir (0666), i810 driver with VideoRam 32768...
I'm completly stucked with this problem. Probably xorg's problem, but he told
that i810 in 6.8.2 be ok. Please can somebody help? I writed this problem to
freebsd-x11 mailing list too.