Comment 22 for bug 1382046

Ok. I've managed to re-create this via a bootable live usb image, so I'm at least confident it's not some kruft in my system.

To reproduce from a clean install:
sudo apt-get install libpam-ldap qemu-kvm libvirt-bin

(point ldap at ldap server,....)

sudo auth-client-config -a -p ldap_example

add an ldap user to the libvirtd group

sudo /etc/init.d/qemu-kvm start

login as ldap user, creating home directory and stuff

ubuntu@ubuntu:~$ sudo su - <ldap user>
ldap@ubuntu:~$ virsh list
error: failed to connect to the hypervisor
error: no valid connection
error: Failed to find user record for uid '1001'

Restart libvirtd-bin:
sudo /etc/init.d/libvirt-bin restart

ldap@ubuntu:~$ virsh list
 Id Name State
----------------------------------------------------

I think that's it. I'd be interested if someone else could confirm.