Thanks for your reply. Yes, some bug reports do seem to be forgotten. ;o) Closing as "Invalid" on the basis the issue was never confirmed by another user and the Xenial release is now EOL.
** Changed in: xorg (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1574154 Title: xorg.conf changed on start of lightdm service Status in xorg package in Ubuntu: Invalid Bug description: After upgrading from 15.10 (Wily) to 16.04 (Xenial), X wont start. It appears that my xorg.conf is modified such that I get a non-working way (I get a coredump in the video driver I think). I have a Thinkpad T530 with dual video cards, so I change the from the nvidia that is somewere(?) auto selected back to intel. Alas, restarting of lightdm service does not work: xorg.conf is re-modified. Manually starting a X session with 'startx' (after correcting xorg.conf) works as expected. Alas, nobody logs about this; that would have helped me find the culprit.. Who modifies my xorg.conf? Why? This never happened before, and should IMHO not be done. Temporary solution: 'chattr +i /etc/X11/xorg.conf'. This makes auto- changing impossible. But this is a hack. I should be allowed to change my system such that it works the way I want. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg (not installed) ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: MATE Date: Sun Apr 24 05:45:17 2016 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: Upgraded to xenial on 2016-04-21 (2 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1574154/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp