OK. I have found a workaround to this. I am attaching the changed /etc/gdm/Init/Default which does the trick for me (I added line 14). Note that I shut down LVDS because I keep the lid of the laptop shut. It may be different for others.
So, this solution is very specific and this remains a bug imho. Although, I am not sure it should still be allocated to xrandr or to gdm. ** Attachment added: "Default" http://launchpadlibrarian.net/47097301/Default -- Wrong resolution in GDM when using external monitor connected to laptop - Intel chipset https://bugs.launchpad.net/bugs/573312 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs