I placed myself in same config as Dmitriy Ivanov, I disabled my HyperThreading on my p4, and managed to run a 2nd domU, but more interesting I managed a third DomU successfully !!!!
Here is my domU config (generated with the xen-tools packages) : kernel = '/boot/xen0-linux-2.6.17-6-generic-xen0' ramdisk = '/boot/xen0-linux-2.6.17-6-generic-xen0.initrd.img' memory = '256' root = '/dev/sda1 ro' disk = [ 'phy:data/xen2-disk,sda1,w', 'phy:data/xen2-swap,sda2,w' ] # LVM on dom0 name = 'xen3' vif = [ 'bridge=xenbr0' ] vcpus = 1 on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' My dom0 uses the edgy xen packages + xen-tools + libc6-xen -- Dom0 crashes upon start of second DomU https://launchpad.net/bugs/71348 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs