Comment 3 for bug 989452

I've set sasl-auth for my servers to make use of sso. As found there are incompatible changes to the sasl-part as found in libvirt and qemu, making it impossible for virt-viewer to connect to vnc-sessions build up by libvirtd. Same applies for virt-manager.

Since it works with libvirtd, kvm-qemu on debian, I suppose it's a bug within libvirtd, kvm-qemu as used with Ubuntu precise.

Switching off sasl auth for vnc is a crude workaround.

Versions found on Ubuntu 12.04:
ii grub-firmware-qemu 1.99-21ubuntu3 GRUB firmware image for QEMU
ii kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu13 dummy transitional package from kvm to qemu-kvm
ii kvm-ipxe 1.0.0+git-3.55f6c88-0ubuntu1 PXE ROM's for KVM
ii libvirt-bin 0.9.8-2ubuntu17 programs for the libvirt library
ii libvirt0 0.9.8-2ubuntu17 library for interfacing with different virtualization systems
ii python-libvirt 0.9.8-2ubuntu17 libvirt Python bindings
ii qemu-common 1.0+noroms-0ubuntu13 qemu common functionality (bios, documentation, etc)
ii qemu-kvm 1.0+noroms-0ubuntu13 Full virtualization on i386 and amd64 hardware
ii qemu-utils 1.0+noroms-0ubuntu13 qemu utilities
ii ubuntu-virt-server 1.3 Common packages necessary for hosting virtual machines
ii virt-top 1.0.6-1 show stats of virtualized domains
ii virt-what 1.11-1 detect if we are running in a virtual machine
ii virtinst 0.600.1-1ubuntu3 Programs to create and clone virtual machines

Versions found on Debian (testing):
ii ipxe-qemu 1.0.0+git-20120202.f6840ba-3 PXE boot firmware - ROM images for qemu
ii kvm 1:1.0+dfsg-11 dummy transitional package from kvm to qemu-kvm
ii libvirt-bin 0.9.11-2 programs for the libvirt library
ii libvirt0 0.9.11-2 library for interfacing with different virtualization systems
ii qemu 1.0.1+dfsg-1 fast processor emulator
ii qemu-keymaps 1.0.1+dfsg-1 QEMU keyboard maps
ii qemu-kvm 1.0+dfsg-11 Full virtualization on x86 hardware
ii qemu-system 1.0.1+dfsg-1 QEMU full system emulation binaries
ii qemu-user 1.0.1+dfsg-1 QEMU user mode emulation binaries
ii qemu-user-static 1.0.1+dfsg-1 QEMU user mode emulation binaries (static version)
ii qemu-utils 1.0.1+dfsg-1 QEMU utilities
ii virt-top 1.0.6-1+b1 show stats of virtualized domains