KVM guests will not start in Ubuntu desktop 20.04.1 LTS after upgrade from 18.04 LTS

KVM guests will not start in Ubuntu desktop 20.04.1 LTS after upgrade from 18.04 LTS

I have a Ubuntu desktop that was running 18.04 LTS up until last week when I upgraded to 20.04.1 LTS. As of the upgrade, neither of the two KVM guests that I created under 18.04 will start. One is a Windows 10 guest with spice and virtio drivers – up to the current Windows updates. The other is a CentOS 7 guest created by Red Hat Code Ready Containers that I used for Kubernetes development. The windows guest displays a GUI with a sad face saying the “device needs to restart”. The CentOS guest stops with a kernel panic. I’ve applied all the Ubuntu updates. I’m not really even sure how to begin diagnosing this. Is it possible that VMs created by KVM on 18.04 simply aren’t compatible with KVM on 20.04?


Previous Reaper is recording, but I can't hear the output when I listen to recording
Next Nordic Advent Calendar installer

About author

You might also like

Ubuntu Dsicussions 0 Comments

Ralink RT5372 with Ubuntu 20.04

Does anyone know how to get this to work? The driver rt2800usb is loaded. Here is part of dmesg showing the problem: Code: [45648.946427] usb 2-1: new high-speed USB device

Ubuntu Dsicussions 0 Comments

Is there an equivalent to CentOS NOZEROCONF=yes

Trying to find workaround to Pulse client error: rmon.error Unauthorized new route to has been added (conflicts with our route to, disconnecting (routemon.cpp:598)   READ MORE

Ubuntu Dsicussions 0 Comments

Request for help/test – Intel Processors power log bits

Hi All, I am looking for users with modern (Sandy Bridge and newer, 2nd gen and newer) Intel processors willing to do a simple test, and report the results on


No Comments Yet!

You can be first to comment this post!

Leave a Reply