Sorry, I didn't want to make mess. I think it has been in the update of the *2016-02-08*, I remember in that update there was the linux-image-4.4. This seems correct as in the following day I intalled xfce to log in and send the bug report. This is the dpkg log of those days. I'm sorry that's still a massive update..
** Attachment added: "log containing the updates after which the regression begun" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1543745/+attachment/4572675/+files/dpkg.log.1 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1543745 Title: Xorg crash prevents login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1543745/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

