Forwarding this bug from Ubuntu reporter w074n:
Driver detects all outputs as disabled when VGA port being used. Works okay with vesa.
I've got a Intel G45 chipset with a X4500HD. It was installed with the vesa driver as already the desktop install cd failed to use the intel driver.
So I tried to use the intel driver manually, which always resulted in the X server not starting up giving this error message: "(EE) intel(0): No valid modes.". Because of that i thought it might be related with bug #194760. Therefore I added the information about the modes to xorg.conf and still it gave the same error.
Then I connected the display via VGA, not DVI and everything is working just fine.
$lspci -nn | grep VGA
00:02.0 VGA compatible controller : Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e22] (rev 03)
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-video-intel 2:2.6.3-0ubuntu9.3
LANG=de_DE.UTF-8ProcVersion: Linux version 2.6.28-13-generic (buildd@vernadsky) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #45-Ubuntu SMP Tue Jun 30 19:49:51 UTC 2009
Uname: Linux 2.6.28-13-generic i686
Created attachment 28085 [details]
karmic (alpha 3)_Xorg.0.log
Created attachment 28086 [details]
karmic (alpha 3)_dmesg.log
Created attachment 28087 [details]
I wish this is some bug already fixed by Ling
Gordon, it's DVI , not VGA, not detected.. should be a dup of bug# 21322
Author: email@example.com <firstname.lastname@example.org>
Date: Thu Jul 16 17:23:09 2009 +0800
fixed, please update your kernel version from drm-intel-next tree.
close issue please open it if you need.