i915 3D Acceleration not working

this would've been libgl1-mesa-dri falling out of the seeds

Same issue in flight 3

Please report the output of

grep -i rendering /var/log/Xorg.0.log

If it says that direct rendering is enabled, then simply install libgl1-mesa-dri: glxinfo should then say that direct rendering is enabled. This seed problem should have been fixed after Flight 1

If Xorg.0.log says that it is disabled, then I guess it is a driver problem and you should confirm this bug.

grep -i rendering /var/log/Xorg.0.log does not give any output at all.

Looked at the log and found this, which might be interesting:
(II) LoadModule: "GLcore"
(II) Loading /usr/lib/xorg/modules/extensions/libGLcore.so
dlopen: /usr/lib/xorg/modules/extensions/libGLcore.so: undefined symbol: __glXLastContext
(EE) Failed to load /usr/lib/xorg/modules/extensions/libGLcore.so

Try to look further in the log, you should see that GLcore gets loaded later, together with glx.:

(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="X.Org Foundation"
        compiled for 7.0.0, module version = 1.0.0
        ABI class: X.Org Server Extension, version 0.2
(II) Loading sub module "GLcore"
(II) LoadModule: "GLcore"
(II) Loading /usr/lib/xorg/modules/extensions/libGLcore.so
(II) Module GLcore: vendor="X.Org Foundation"
        compiled for 7.0.0, module version = 1.0.0
        ABI class: X.Org Server Extension, version 0.2
(II) Loading extension GLX

Does Xorg's log contain anything about "drm" ?

I see, here is the output:
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="X.Org Foundation"
        compiled for 6.99.99.904, module version = 1.0.0
        ABI class: X.Org Server Extension, version 0.2
(II) Loading sub module "GLcore"
(II) LoadModule: "GLcore"
(II) Loading /usr/lib/xorg/modules/extensions/libGLcore.so
(II) Module GLcore: vendor="X.Org Foundation"
        compiled for 6.99.99.904, module version = 1.0.0
        ABI class: X.Org Server Extension, version 0.2
(II) Loading extension GLX

Yes, here is the log about drm:
(II) Loading sub module "drm"
(II) LoadModule: "drm"
(II) Loading /usr/lib/xorg/modules/linux/libdrm.so
(II) Module drm: vendor="X.Org Foundation"
        compiled for 6.99.99.904, module version = 1.0.0
        ABI class: X.Org Server Extension, version 0.2
(II) Loading extension XFree86-DRI

Tested with Flight 4, 3D still doesn't work :(

Is there anything I can do to help with the correction of this bug?

It is a regression in Dapper, 3D works nicely in hoary, and brezy.

Need anymore info or?

Same problem in Flight 5.

Can you dist-upgrade to the latest packages, there have been a couple of tweaks.

Could you also attach an:

  lspci -n | grep 0000:00:02

Raising the priority, this is a regression.

Substituting "vesa" with "i810" in /etc/x11/xorg.conf fixes this problem.

lspci -n | grep 0000:00:02

0000:00:02.0 0300: 8086:2592 (rev 03)
0000:00:02.1 0380: 8086:2792 (rev 03)

This would seem to be an auto-detection issue. The ThinkPad R52 I'm using at the moment has the same:

  0000:00:02.0 0300: 8086:2592 (rev 03)
  0000:00:02.1 0380: 8086:2792 (rev 03)

I uploaded a fix that added these PCI IDs. Could you check with the latestest updates and confirm that this is fixed for you.

I did a complete upgrade of Flight 5 and rebooted, but still the problem persists.

Should I do something else to make this work or...?

Flight 5 doesn't have those IDs in. Please can you try:

  $ sudo dpkg-reconfigure -phigh xserver-xorg

and if that doesn't work, can you paste the output of:

  $ sudo discover --disable-all --enable=pci --format="%V %M\t%S\t%D\n" video

and:

  $ lspci -n | grep 0000:00:0

which should also show the bridge address. And can we have a quick which package versions you've got installed:

  $ dpkg -l | awk '/^ii.*(libgl1|linux-image|driver-i810|xserver-xorg )/{print $2,$3}'

Many Thanks!

sudo dpkg-reconfigure -phigh xserver-xorg fixes the config file just alright :)

Excellent, excellent :)

Works out of the box in Flight 6