Warn if user has no other keyboard than USB

[rootkovska]

Make sure to warn the user that:

1. We cannot properly secure such a system:
   a. either the USB must be in Dom0, which is a total failure of security, generally.
   b. ... or the keyboard must be in USB VM, which provides some security but is far from ideal (e.g. if the USB VM gets compromised from other USB devices, the attacker can sniff and spoof all the keystrokes)
2. If the user decided to use a USB VM for the keyboard (via our qubes.InputKeyboard service), make sure that the user doesn't try to stop the VM, or else will lock themselves out.

[marmarek]

Duplicate of #1597 , but this one is much better described, so I'll close the other one.

[marmarek]

Duplicate of #1597 , but this one is much better described, so I'll close the other one.

[marmarek]

Automated announcement from builder-github

The package anaconda-20.25.16-12.fc20 has been pushed to the r3.1 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package anaconda-20.25.16-12.fc20 has been pushed to the r3.1 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package anaconda-20.25.16-12.fc20 has been pushed to the r3.1 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[marmarek]

Automated announcement from builder-github

The package anaconda-20.25.16-12.fc20 has been pushed to the r3.1 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update