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-X, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/747205 Title: [arrandale] Black screen on all outputs when external VGA is connected _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
