As mentioned in the bug report https://bugs.freedesktop.org/show_bug.cgi?id=21987
this could well be a bug in the xrandr client tool. The xrandr client tool always uses CurrentTime, instead of the precise timestamp as returned from XRRGetScreenResources. What still escapes me, is why grandr is still working although it uses CurrentTime as well. -- xrandr: Configure crtc 0 invalid time https://bugs.launchpad.net/bugs/394490 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