[member=7109]Moltke[/member] Below is a screenshot of default Debian 8 DE. (ignore the conky)
https://imgur.com/a/l7Eyw
It is impossible that your LL system suddenly became Debian (different kernel and file system) or for that matter even skinned with Debian as Debian does not use the same graphics format for wallpaper or lockscreen. I'm assuming you got the blue XFCE background which does happen infrequently with an *upgrade (not update) when certain latent XFCE configurations cannot be passed to the new kernel because of dependency or permission problems or both. In other words some DE settings must be added manually all over again in some cases of *upgrades (not usually true of updates). In the future run updates first, then disable auto login, and run upgrade, and instead of the unix && command line try the Lite upgrade feature included with Lite software. As I said before there is a Debian 8 grub bootscreen 640 by 480 still mired in the grub code for GFX mode which can be confusing but it only appears in GFX mode. Look in /etc/default/grub and make sure GFX mode is commented out, a # before it.
TC
https://imgur.com/a/l7Eyw
It is impossible that your LL system suddenly became Debian (different kernel and file system) or for that matter even skinned with Debian as Debian does not use the same graphics format for wallpaper or lockscreen. I'm assuming you got the blue XFCE background which does happen infrequently with an *upgrade (not update) when certain latent XFCE configurations cannot be passed to the new kernel because of dependency or permission problems or both. In other words some DE settings must be added manually all over again in some cases of *upgrades (not usually true of updates). In the future run updates first, then disable auto login, and run upgrade, and instead of the unix && command line try the Lite upgrade feature included with Lite software. As I said before there is a Debian 8 grub bootscreen 640 by 480 still mired in the grub code for GFX mode which can be confusing but it only appears in GFX mode. Look in /etc/default/grub and make sure GFX mode is commented out, a # before it.
TC
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.