I tried mdz's suggestion from comment #31. After ctrl+alt+f7, the screen switched to what looked like a different text console and I saw a dozen or so status messages, the last two of which were "Stopping anac(h)ronistic cron" and "Starting CUPS printing spooler/server".
xrandr.txt attached. ** Attachment added: "xrandr.txt" https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/747205/+attachment/2024443/+files/xrandr.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/747205 Title: [arrandale] Black screen on all outputs when external VGA is connected -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
