I think that this is a verification-failed. Upgrading the kernel in -proposed does not fix the issue:
ubuntu@ip-10-11-165-53:~$ uname -a Linux ip-10-11-165-53 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ip-10-11-165-53:~$ dpkg-query --show linux-image-virtual linux-image-virtual 3.13.0.37.44 ubuntu@ip-10-11-165-53:~$ dmesg | grep xen [ 0.000000] xen: PV spinlocks enabled [ 0.000000] xen:events: Xen HVM callback vector for event delivery is enabled [ 0.440123] xen:balloon: Initialising balloon driver [ 0.444026] xen_balloon: Initialising balloon driver [ 0.452023] xen:balloon: Cannot add additional memory (-17) [ 0.492062] Switched to clocksource xen [ 0.515406] xen: --> pirq=16 -> irq=8 (gsi=8) [ 0.515446] xen: --> pirq=17 -> irq=12 (gsi=12) [ 0.515470] xen: --> pirq=18 -> irq=1 (gsi=1) [ 0.515497] xen: --> pirq=19 -> irq=6 (gsi=6) [ 0.515530] xen: --> pirq=20 -> irq=4 (gsi=4) [ 0.778201] xen: --> pirq=21 -> irq=28 (gsi=28) [ 0.778253] xen:grant_table: Grant tables using version 1 layout [ 0.917639] xen_netfront: Initialising Xen virtual ethernet driver [ 1.006714] xenbus_probe_frontend: Device with no driver: device/vfb/0 [ 2.456083] xen:balloon: Cannot add additional memory (-17) [ 6.460080] xen:balloon: Cannot add additional memory (-17) [ 14.476110] xen:balloon: Cannot add additional memory (-17) [ 30.492059] xen:balloon: Cannot add additional memory (-17) [ 62.556156] xen:balloon: Cannot add additional memory (-17) [ 94.620107] xen:balloon: Cannot add additional memory (-17) ** Tags removed: verification-needed-trusty ** Tags added: verification-failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1304001 Title: xen:balloon errors in 14.04 beta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1304001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs