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Vmware - Unable to Change Virtual Machine Power State: Internal Error.

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Ran into this while running Vmware Workstation under Ubuntu Jaunty. I got an error while shutting down the machine through an NX session.

This is a result of a zombie ‘vmware-vmx’ process running. All you need to do is kill the process. This command sends ‘signal 9’ to the process. When sent to a program, SIGKILL causes it to terminate immediately. In contrast to SIGTERM and SIGINT, this signal cannot be caught or ignored. For more information: more sigkill info.

killall -s9 vmware-vmx

After that, I was able to start up the virtual machine without issue.