This might be related to the configuration of the virtual machine. A machine configured to have cpu X might not start up when it is changed to cpu Y. We also observed that a windows host does not boot on a ubuntu host with the default kvm configuration.

Good luck!

2017-08-24 17:57 GMT+02:00 Marko Weber <>:

a vm in format qcow2 on host A  (Intel Xeon CPU E5-1650 v4)
do not start on host B ( Intel Core i7-2600 CPU @ 3.40GHz )

i get on host B by starting the vm  "trap errors" Opcode.

anyone here has an idea how to solve this?

kind regards

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