3 detailed questions about using Qubes

Hello dear Qubes community,

I could use some help with a few details:

  1. For example, I would like to save a freely selectable area as a screenshot in an AppVM (Fedora), similar to the built-in “Snipping Tool” in Windows. I don’t want to use the screenshot function built into Firefox, because I often want to take such screenshots in other programs within Qubes (inside the AppVM, in this example).
  2. I have an HP LaserJet Pro MFP M477fdw and currently use the “Document Scanner” for scanning. It works fine overall, but when scanning many pages, it is not possible to preview them individually before saving in order to check or delete blank pages. Is there a trick for this? Are there better programs that run under Qubes? What do you use?
  3. When a Qube is not opened in full screen, clicking on the colored bar often maximizes the corresponding window, but not always. If it doesn’t work once, a second double-click doesn’t help either. What causes this, and how can it be fixed?

Thank you in advance for your help. I would really appreciate any assistance.

  1. There isn’t one. You could probably write a script in dom0 for that. For now, hit printscreen and copy the image to a dispvm for cropping.
  2. I don’t have an answer to the main question. To answer the end question, usb sticks and a stand alone printer scanner that never gets connected to a network
  3. There should be a square button on the right side of the title bar for that. Or somewhere else if you changed the window manager theme. Alt-F10 toggles full screen with title bar. Alt-F11 is full screen without title bar, and Alt-F1 brings up a window manager menu. Also, Alt+mouse1 moves a window, which is useful in case you can’t reach a title bar.
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I don’t know the Windows Snipping Tool, so I might be missing something here but you can do this with the screenshot tool, either in dom0 or in a qube. You can add a shortcut to the app menu.

What you are using are one or both of the GNU+Linux distributions Debian and Fedora. Qubes compartmentalizes instances of these distributions.

On these distributions there are many implementations of the kinds of apps you described. Some belong to the KDE project and others are their own independent project that might not be included with XFCE.
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Out of curiosity and interest in user experience I will go out of my way to see what are the nuances of the screenshot tool on Windows. This doesn’t help you but you should know there are people out there who care.

Run dnf search screenshot or apt-cache search screenshot. There are many screenshot tools in the packages of GNU+Linux distributions like Fedora and Debian. You can run these “in” the qube (not dom0) which may be easier sometimes.
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Can you identity what program you are using (more than the generic label)?
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I suggest to set a key combination for Maximize window in xfwm4-settings. This doesn’t solve that double clicking on the window title bar is not always working as expected but you may find using a key combination easier than clicking.

Shift + Super + Space is one you could try.

Some windows don’t want to be maximized which is not a limitation of the window manager but behavior for that particular window of whichever app (how the app was written by its developers).

  1. That’s resolved. There is a screenshot tool. You can even select a specific area and don’t always have to capture the entire screen. As mentioned, you can select an area with the mouse; however, while defining the area by “clicking and dragging,” the selection is unfortunately not visually displayed (like in the Snipping Tool with a dashed outline). But it’s okay.
  2. I have my hand on the mouse and start Firefox with it. Firefox does not open in full screen, and then I want to click on the colored title bar with the mouse so that the Firefox window switches to full screen with the colored bar. I don’t want to switch to the keyboard. How can I make it so that full screen is reliably activated every single time by double-clicking the colored title bar?

Q Menu->System->System Settings->SettingsManager->WindowManager->Advanced
Bottom option is for DoubleClick Action.

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

Q Menu > System > System Settings > Other > Screenshot saves to the Pictures directory in dom0. The following script works well to save screenshots to the focus AppVM.
How do I save a screenshot to save on a Qube? - #3 by hUt4Ke107Y7VyK

For question #1, you could install maim in dom0. it is a small program & I use it for this purpose exactly.