As I just posted on #1048657 , I had this crash bug in 2.6 and 2.8. It had apparently been caused by an inadvertent substitution of my .X display manager. This substitution also caused shell scripts running as root (on system startup) to fail .X related tasks due to a bad MIT magic cookie and and a lack of proper authorization (gdm was changing the XAUTHORITY cookie directory for my main login at every reboot, so the root user couldn't link to that cookie)
In any case sudo apt-get install --reinstall lightdm unity-greeter rm ~/.Xresources rm ~/.Xauthority #without this (and possibly the one above) you may have difficulty logging in to your primary user account sudo dpkg-reconfigure lightdm #select lightdm, rather than gdm, etc echo -e "/usr/sbin/lightdm" | sudo tee /etc/X11/default-display-manager #this may have been redundant -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gimp in Ubuntu. https://bugs.launchpad.net/bugs/1087920 Title: gimp crashes after save as Status in “gimp” package in Ubuntu: Confirmed Bug description: opened and modified file <name>.xcf, save as, file <new_name>.xcf, Save After while error popup 'window <name>.xcf not respond', then Gimp crashes and close. Error console empty. But <new_name> file is saved w/o errors. After relaunching Gimp, I can open it and continue until the next 'Save as'. OS Ubuntu 12.04.1, Gimp 2.6.12 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/1087920/+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