I'll try to get a backtrace as soon as possible. I'd just thought I'd mention though that it turns out that this defect (and the segfault in Xrandr) only happens on one monitor I have - I tried another (newer) monitor and two projectors and it worked fine there.
-- [GM45, 945] Unable to mirror to external monitor https://bugs.launchpad.net/bugs/368518 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
