# cd /usr/lib/xscreensaver/config
# cp -p unlock-logo{,-original}.png
# cp /tmp/unlock-logo-new.jpg .
# cp unlokck-logo{-new.jpg,.png}
NOTE
Yes, weird!
It's a JPEG image with a .PNG extension!
The result is something similar to:
Thursday, January 23, 2014
Xscreensaver unlock picture
Beyond the security & consent banner, one nice touch for a personal desktop installation is the customization of the Xscreensaver unlock picture. It's a JPEG image, possibly a square around 237 pixels in side.
# cd /usr/lib/xscreensaver/config
# cp -p unlock-logo{,-original}.png
# cp /tmp/unlock-logo-new.jpg .
# cp unlokck-logo{-new.jpg,.png}
NOTE
The result is something similar to:
# cd /usr/lib/xscreensaver/config
# cp -p unlock-logo{,-original}.png
# cp /tmp/unlock-logo-new.jpg .
# cp unlokck-logo{-new.jpg,.png}
NOTE
The result is something similar to: