xenconsole: Could not read tty from store: No such file or dir

xen: создал domU не могу зайти через консоль xl console vm_ubuntu

xl console vm_ubuntu
xenconsole: Could not read tty from store: No such file or directory

Name                                        ID   Mem VCPUs	State	Time(s)
Domain-0                                     0  1024     1     r-----     101.9
vm_ubuntu                                    5   499     1     -b----       5.7

xencosole запущен
domU перезапускал

конфиг гостевой ос

kernel = '/usr/lib/xen/boot/hvmloader'
builder = 'hvm'
memory = '1024'
device_model = '/usr/lib/xen/bin/qemu-dm'
disk = [ 'tap:aio:/etc/xen/vm_centos/hdd0,hda,w', 'tap:aio:/var/opt/xen/iso_import/ubuntu.iso,hdc:cdrom,r' ]
vif = [ 'bridge=eth0, mac=fe:16:3e:68:fc:10' ]
name = 'vm_ubuntu'
boot = 'd'
vnc = 1
sdl = 0
apic = 1
acpi = 1
localtime = 0
vcpus = 1
pae = 1
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'
vncconsole = 0
stdvga = 0
videoram = 16
shadow_memory = 8