Cannot start X when upgrading from Xubuntu 9.04 to Xubuntu 9.10

[Ara Pulido]

Binary package hint: update-manager

With a fresh (no updates installed) installation of Xubuntu 9.04 I run update-manager -d -c

It finishes correctly, but when rebooting, X cannot start.

Logs attached.

[Steve Langasek (vorlon)]

X log shows:

(II) LoadModule: "vboxvideo"
(WW) Warning, couldn't open module vboxvideo
(II) UnloadModule: "vboxvideo"
(EE) Failed to load module "vboxvideo" (module does not exist, 0)
(EE) No drivers available.

Fatal server error:
no screens found

In jaunty, this driver was in virtualbox-ose-guest-utils. In karmic, it's in virtualbox-ose-guest-x11, which is recommended by virtualbox-ose-guest-utils. So this should have been handled smoothly on upgrade, AFAICS; but there's no mention of virtualbox-ose anywhere at all in the dist-upgrade.tar.gz that you've attached. Did this package get held back instead for some reason?

[Michael Vogt (mvo)]

I see nothing at all in the main.log releated to virtualbox or ose. How did you install the vboxvideo driver? Update-manager should have the packages that are kept back or not upgraded in the logs as well. Given that bug #457443 is very similar it seem like the xorg fallback logic should be improved

[Michael Vogt (mvo)]

If ithe xorg.conf file is zero byte, its probably bug 439551 - does removing the file make xorg start again?

[Michael Vogt (mvo)]

I added code now to u-m that will remove zero size xorg.conf files after the upgrade.