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Connect to a VM console
In some cases it's not possible to use a standard graphical terminal emulator to interact with a VM. In this case, "serial console" access is still available using two tools.
qvm-console-dispvm
Usage: qvm-console-dispvm VMNAME
Launches a DispVM connected to the VM's console, using the qubes.ShowInTerminal RPC service. This provides a full-featured console.
At the time of writing this command contains a bug whose fix is waiting on release, therefore it may be necessary to use the following.
xl console
Usage: sudo xl console VMNAME
Uses Xenlight to directly access the VM console from dom0. For security reasons this console is deliberately limited in what it can display.
Line-by-line text will work fine, but if a Curses-style pseudo-graphical-interface comes up the output will be garbled and you will need a tool like asciinema to untangle it.