I have done clean install of the server and yes, Windows VM freezes with hyperv before as well as after reinstall. I'm have reverted my servers to 12.04.4 until this is solved. Krzysiek
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1308341 Title: Multiple CPUs causes blue screen on Windows guest (14.04 regression) Status in QEMU: New Status in “qemu” package in Ubuntu: Confirmed Status in “virt-manager” package in Ubuntu: Confirmed Bug description: Configuring a Windows 7 guest using more than one CPU cases the guest to fail. This happens after a few hours after guest boot. This is the error on the blue screen: "A clock interrupt was not received on a secondary processor within the allocated time interval" After resetting, the guest will never boot and a new bluescreen with the error "STOP: 0x0000005c" appears. Shutting down the guest completely and restarting it will allow it to boot and run for a few hours again. The guest was created using virt-manager. The error happens with or without virtio devices and with both 32-bit and 64-bit Windows 7 guests. I am using Ubuntu 14.04 release candidate. qemu-kvm version 2.0.0~rc1+dfsg-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1308341/+subscriptions
