Actually external monitor with Unity is also OK in 832x624 but not in 1024x768 and 1280x1024. see xrandr information below:
Screen 0: minimum 320 x 200, current 832 x 624, maximum 4096 x 4096 LVDS1 connected (normal left inverted right x axis y axis) 1024x600 60.0 + 800x600 60.3 56.2 640x480 59.9 VGA1 connected 832x624+0+0 (normal left inverted right x axis y axis) 338mm x 270mm 1280x1024 60.0 + 75.0 1024x768 75.1 70.1 60.0 832x624 74.6* 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/779921 Title: Unity makes usage of dual monitors impossible -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs