*** This bug is a duplicate of bug 1346917 *** https://bugs.launchpad.net/bugs/1346917
Just wanted to add that upgrading my kernel to a newer version fixed the problem for me, too. Host: 2x E5-2620V2, Ubuntu 14.04 LTS Guest: 24 virtual cores, Windows Server 2008 R2 Before fix: sudo uname -a Linux x.contabo.net 3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:22:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Bluescreen stop 0x0000005c every few hours After fix: sudo uname -a Linux x.contabo.net 3.16.0-23-generic #31-Ubuntu SMP Tue Oct 21 17:56:17 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux No Bluescreens or other crashes since 7 days under full load Upgraded with this tutorial http://askubuntu.com/questions/541775/how- can-i-install-ubuntu-14-10s-kernel-in-ubuntu-14-04-lts -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1308341 Title: Multiple CPUs causes blue screen on Windows guest (14.04 regression) To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1308341/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs