Ctrl+alt+del

User Support
1

I want to press the Ctrl + Alt + Delete keys to open the lock screen of a Windows Server VM.

However, when I do that, QubeOS gets locked instead.

How can I resolve this issue?

2

Hi kzlz

Sounds like you have keyboard binding in Qubes for Ctrl+Alt+Delete that intercepts the press before the VM. Have you looked in[1]:

Q → Gear Icon → System Settings → Keyboard → Application Shortcuts

?

:slight_smile:

[1]: Place/path probably depends on Qubes release and personal customization

1 Like
3

This post reminds me when using VNC with Windows systems (a very long time ago) there was a special menu and one of the options was send ctrl+alt+del.

Within the popular FOSS software collection there is probably an on-screen keyboard that could be used within the designated Xorg server qube (today this is dom0).

I can imagine how an on-screen keyboard or even just send ctrl+alt+delete as a menu item in a window menu (handled by the window manager) could be very useful for Windows (and other highly obscure) guest OS.

4

The VNC viewer from tigervnc (on Fedora) still have the F8-menu with:

Send F8
Send Ctrl-Alt-Del

… also when the remote machine is Linux.

:slight_smile:

1 Like
5

In KDE, you can change this under “SystemsSettings->Session Management->LogOut”.
It’s a configurable shortcut.

In Xfce, Settings->Keyboard->ApplicationShortcuts:
Highlight entry and Remove.

Either of these will remove the Qubes response to CAD.

Alternatively, a small script will allow you to pass CAD in to any qube:

#!/bin/sh
if [ $# -eq 1 ]; then
  xdotool search --name $1 key ctrl+alt+Delete
else
  echo "You must specify qube"
fi
exit

Save this on your path in dom0, and assign it to a shortcut.

I never presume to speak for the Qubes team.
When I comment in the Forum I speak for myself.