[Qemu-devel] [Bug 1308341] Re: Multiple CPUs causes blue screen on Windows guest (14.04 regression)

[Krzysztof Cybulski]

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

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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

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