Hello ! Iam not really firm with bugreports ... and 'reprotbug' cannot send from my computers. After several days (!!) of hacking in VMs and physical machines, I think I isolated a bug in 'lightdm' - and saw, already reported.
The initial reason was a message from perl: > perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US:en", LC_ALL = (unset), LANG = "en_US.utf8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). *** update-locale: Error: invalid locale settings: LANG=en_US.utf8 < "en_US.utf8" is in lowercase ! This happens while setup new VMs in LXC. Computerx with X(FCE), but without lightdm do not exhibit this error. Would like to find the responsible codeline or a fix! Thanks anyway, Manfred (Braun) Package: lightdm Version: 1.10.3-3 Severity: normal -- System Information: Debian Release: 8.5 APT prefers stable APT policy: (900, 'stable'), (500, 'stable-updates'), (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages lightdm depends on: ii adduser 3.113+nmu3 ii dbus 1.8.20-0+deb8u1 ii debconf [debconf-2.0] 1.5.56 ii libc6 2.19-18+deb8u4 ii libgcrypt20 1.6.3-2+deb8u2 ii libglib2.0-0 2.42.1-1+b1 ii libpam-systemd 215-17+deb8u4 ii libpam0g 1.1.8-3.1+deb8u1+b1 ii libxcb1 1.10-3+b1 ii libxdmcp6 1:1.1.1-1+b1 ii lightdm-gtk-greeter [lightdm-greeter] 1.8.5-2 Versions of packages lightdm recommends: ii xserver-xorg 1:7.7+7 Versions of packages lightdm suggests: pn accountsservice <none> ii upower 0.99.1-3.2 -- debconf information: lightdm/daemon_name: /usr/sbin/lightdm * shared/default-x-display-manager: lightdm