I have an Intel DG956WH motherboard (G965, GMA X3000).  I installed
AMD64 Edgy from cd, using an IDE-USB adapter (handy gadget to have
around).

 I had my CRT connected to the VGA port through a KVM during the
install.  I have since discovered that the KVM doesn't pass DDC signals,
which explains my 60Hz refresh rate, and might have something to do with
other problems.  (which I maybe should have filed as separate bugs;  let
me know if I should split this up.)

 Video worked fine out of the box for me.  Switching to a text console
and back screwed up the video, though.  My CRT loses vertical sync, and
the screen becomes a flicker of the average colour of whatever is
displayed.  (I think the output image is fine, it's just not in a vid
mode the monitor can sync to or something.  I can ssh in and use x11vnc
-display :0 and continue using my login session, which is how I can
compare the displayed image with the colour of the flicker.)

  Upgrading the kernel to linux-image-2.6.19-7-generic 2.6.19-7.11 made
switching to a text console safe, but starting a second X server (e.g.
with gnome's switch user feature, or presumably with startx -- :1) still
screws it up.  With Edgy's 2.6.17 kernel, CTRL+ALT+Backspace to shut
down the X server (so gdb restarts it) didn't help.  The restarted X
server outputs the same bad video.  (I haven't tested that now because I
unwisely started bonnie++ in a gnome-terminal tab on my 500GB WD RE2
hard drive, and it will probably take another 20 hours...)

 Further observations with 2.6.19:  While switched to a text console,
x11vnc shows a corner of the screen tiled across the whole 1024x768 .
This doesn't work properly on other machines with other drivers; e.g.
nvidia (proprietary) on i386 Edgy.  This probably can't work because the
X server can't hold onto the video RAM where the image is if another X
server is going to be able to start.

 With 2.6.17 and 2.6.19, glx is a little flaky.
[EMAIL PROTECTED]:~$ glxgears 
libGL warning: 3D driver claims to not support visual 0x5a
but it does work.  So do other opengl apps, like xmoto.
(I've attached output of glxinfo).
Sometimes trying to run an opengl program fails, and there's even a kernel log 
message:
[48096.418558] [drm:i915_cmdbuffer] *ERROR* i915_dispatch_cmdbuffer failed

I'll attach my Xorg.0.log, too.

The splash boot video is kind of corrupted (mostly gray, not full
colour), even with 2.6.19.  The difference I saw with switching to tty1
and back might just have been because I took the splash option out of my
grub menu.lst before the reboot with the new kernel.  The boot splash is
fine with the i386 Edgy CD, but not the amd64 CD.  (unsurprisingly, it's
the same booting from the AMD64 CD as with the splash option after the
install.)  So I'm booting with a "colour VGA+ 80x25" console.  fbcon and
vesafb are loaded, but their use count is zero, and there's nothing the
the kernel log about switching to an fb console.  OTOH, the console font
does change to a very spindly one after some boot scripts run.  But
fbset says no such device opening /dev/fb0, so I guess it's real text
mode.  Anyway, booting without the splash fixes VT switching, except for
switching between two X servers.  Actually starting the second X server
worked ok, just switching back screwed things up.

 I think that's about it.  Xv works.  DDC works when I plug my monitor
straight into the mobo.

  Intel DG965WH boards are pretty nice...  And since it's made by Intel,
if the VBE BIOS needs some fixes, they are hopefully actually likely to
do something (right?).


** Attachment added: "output of glxinfo"
   http://librarian.launchpad.net/5335645/glxinfo.txt

-- 
965/x3000 video not supported
https://launchpad.net/bugs/61951

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