You have been subscribed to a public bug: After running update today (on Ubuntu 15.10) and rebooting the OS lightdm would not start. After some debugging I noticed that /dev/null (and some other /dev files) do not have adequate permissions (compared to another Ubuntu box I have) - e.g. 'others' could not read nor write /dev/null.
After 'chmod a+rw' offending files, lightdm started up. Of course this is not reboot persistent so I need to put this in some /etc/rc.* to make it stick - which I do not want to! To fix this problem after reboots I added /etc/init.d/fix-dev.sh script with contents, and symlink to /etc/rcS.d/S14fix-dev.sh (last entry): chmod a+rw /dev/null /dev/random /dev/urandom /dev/ptmx /dev/tty /dev/zero /dev/full /dev/fuse /dev/net/tun My system now starts the lightdm as it did before. $ lsb_release -rd Description: Ubuntu 15.10 Release: 15.10 apt-cache policy udev udev: Installed: 225-1ubuntu9 Candidate: 225-1ubuntu9 Version table: *** 225-1ubuntu9 0 500 http://se.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages 100 /var/lib/dpkg/status ** Affects: systemd (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: bot-comment xubuntu -- Wrong /dev/null permissions after boot https://bugs.launchpad.net/bugs/1522313 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
