Lucid fails to start freezes at/just before GDM

[Hans van den Bogert]

booting goes ok till X comes up, there is the ubuntu equivalent of the hourglass and then freezes. You can hear the gdm ready sound, but the screen apart from the hourglass stays black. Switching to VT's is not working, the machine is frozen after that.

personally I think this are intel graphics troubles (using intel gma4500mhd) which have given me flaky support in ubuntu since using kernel 2.6.32 although starting lucid with a 2.6.31 (which I used up until this point) also results in a freeze.

Starting in safe mode works as long as gdm is not started.

As you might understand, I'm having difficulty assigning this bug to a particular package, however this is a major bug.

Some side information: starting the live alpha 2 results in a flickering X.

[shivan (kingshivan)]

my latest safe-upgrade in lucid cause the same thing I think.
the machine is a m1330 with intel graphics.

I can log in, but I have a weird line of artifacts (3-4 pixel high, near the middle-top of the screen), and after that, the lines reappearing while the session is loading, then everything freeze.

[Jeremy Bícha (jbicha)]

I'm going to mark this as a duplicate of bug 506951 since it looks to me like the same issue and there are more details there. I got hit by this bug also with my Intel video card.

[Hans van den Bogert (hbogert)]

 bug #506951 has a fix for this, likely to be upstream as reported in email containing fix instructions.
Status can be updated to Fix committed

concise instruction for fix:
reinstall xorg-xserver-xorg-core