`headless: false` is why the GUI is opening. I'm not sure if the 18.04.1 is the latest ISO, you should try 18.04.4 though you'll need to update the checksum.
It looks like you might using GitHub.com/boxcutter/Ubuntu or GitHub.com/chef/bento and both of these have a README that describes how to invoke them correctly. If you are using a different template you should certainly check these out. -- This mailing list is governed under the HashiCorp Community Guidelines - https://www.hashicorp.com/community-guidelines.html. Behavior in violation of those guidelines may result in your removal from this mailing list. GitHub Issues: https://github.com/hashicorp/packer/issues IRC: #packer-tool on Freenode --- You received this message because you are subscribed to the Google Groups "Packer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/packer-tool/33424116-903a-41ae-a929-6c4f842dd357%40googlegroups.com.
