Hello, yes, 1:00.0 is the GTX 660, and yes, I'm running X on the host. When I boot into runlevel 1 (on Mint, which is Debian-based, so that corresponds to a single-user runlevel without X, although I saw a not-very-fancy boot splashscreen), this is what dmesg | grep -i vga gives me: [ 0.000000] Console: colour VGA+ 80x25 [ 0.324894] vgaarb: device added: PCI:0000:00:01.0,decodes=io+mem,owns=io+mem,locks=none [ 0.324903] vgaarb: device added: PCI:0000:01:00.0,decodes=io+mem,owns=none,locks=none [ 0.324905] vgaarb: loaded [ 0.324906] vgaarb: bridge control possible 0000:01:00.0 [ 0.324907] vgaarb: no bridge control possible 0000:00:01.0 [ 16.459085] hda-intel 0000:01:00.1: Handle VGA-switcheroo audio client Thanks! -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html