How do you "screen capture" your Login screen?

[americanrockradio]

I've put together a modified version of an existing GDM login screen and the only thing I'm missing before I make it available is a "screen capture" preview pic of the login screen itself.

How do you do this?

Thanks

[Fab]

I've put together a modified version of an existing GDM login screen and the only thing I'm missing before I make it available is a "screen capture" preview pic of the login screen itself.

How do you do this?

Thanks

quick reply:
xnest

[rototom]

Use a digital camera!

[americanrockradio]

Use a digital camera!

Hahaha I liked this one =)

Xnest did the trick, thanks much!

[Fab]

Hahaha I liked this one =)

Xnest did the trick, thanks much!

no prob, glad it worked :9

[benplaut]

quick reply:
xnest

xnest?

[Fab]

xnest?

http://www.xfree86.org/current/Xnest.1.html

essentially, you can start an x server in your current x session, and therefore capture the window with the second X displaying gdm with the print button

[Crafty Kisses]

http://www.xfree86.org/current/Xnest.1.html

essentially, you can start an x server in your current x session, and therefore capture the window with the second X displaying gdm with the print button

Exactly!

[dmontalvao]

I must be really stupid. How does Xnest work? I already installed it.

[crimesaucer]

This is the easiest way I found to take a screenshot of your GDM: http://ubuntuforums.org/showthread.php?t=2127

I use this command in Archlinux to take screenshots of my GDM... all though I do it in root tty2, and I don't use the "sudo" command like in the link I put above... so I'm going to explain it how I do it.

First install the package "Imagemagick", then I start my computer, and when I'm on my Login screen, I press "ctrl+alt+f2" to enter my tty2 or "virtual terminal #2"... then when in tty2, I type:

root

...and then enter the root password.


Next I use this command while I'm root in tty2:

chvt 7 ; sleep 5 ; XAUTHORITY=/var/lib/gdm/:0.Xauth DISPLAY=:0.0 import -window root gdm-screenshot.png; chvt 2

This will change the screen from tty2 (or vt2) to tty7 (or vt7)... then it will wait 5 seconds before taking a screenshot and putting it into your Root Folder... then it will change back to your tty2 (or vt2)...

Then type:

exit

... to log out of root privilege of tty2... then type "ctrl+alt+f7" to get back to your normal GDM login screen where you can now login like normal.


Now your last step is to run this in "alt+f2":

gksu nautilus

... now you should have your root nautilus folder open and you will see your "gdm-screenshot.png"... just change permissions to your username (right click properties, and select permissions)... then copy it to your home folder.


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I also think there you might be able to use this command in tty2 without logging in to root:

chvt 7 ; sleep 5 ; XAUTHORITY=/var/lib/gdm/:0.Xauth DISPLAY=:0.0 sudo
import -window root gdm-screenshot.png; chvt 2