Public bug reported: I upgraded my host server from ubuntu 12.04 to 14.04. Afterwards, none of my desktop VM's worked (I haven't even tried the server VM's yet). During login the VM's complained about being unable to detect the graphics card (screenshot will be posted). Proceeding results in a screen of jibberish (screenshot will be posted). The VM guest is actually working fine, and I can SSH into it. I made a new guest VM using the exact same "virst-install" command I had used for the original VM creation on the 12.04 host server, and compared the resulting .xml file. There were 3 or 4 differences, but this one:
<type arch='x86_64' machine='pc-1.0'>hvm</type> in 14.04 became this: <type arch='x86_64' machine='pc-i440fx-1.7'>hvm</type> I used "virsh edit" and changed that line and the guest VM originally created under a 12.04 server host then worked under the 14.04 server host. Note: So far, this change has been made to 6 VM's (5 are either 14.04 originally or as upgraded from 13.10, and one was a 12.04 Desktop guest VM) and 5 of them are now working. The one is only not working for one log in type out of 5 possible (GNOME; GNOME Classic; GNOME Flashback (Compiz); GNOME Flashback (Metacity); Ubuntu (Default)). I use both TightVNC viewer and UltraVNC viewer from a windows computer for this work, and have both viewers for this particular issue. I use both vmvga or default (cirrus) video, and have tested both for this issue. Typical VM creation command: sudo virt-install -n desk_tt -r 8192 --disk path=/media/newhd/desk_tt.img,bus=virtio,size=50 -c trusty-desktop- amd64-20140224.iso --network bridge=br0,model=virtio --video=vmvga --graphics vnc,listen=0.0.0.0 --noautoconsole -v --vcpus=4 ** Affects: qemu (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308756 Title: VNC graphics issues on guest VMs after server host upgrade from 12.04 to 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1308756/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs