When my laptop is at work (running OpenSUSE Tumbleweed), and when the network cable -> USB adapter is plugged in, eventually in a day the computer sort-of-freezes. I can still operate everything normally, but as soon as I attempt any sudo command, the process attempting it freezes; this includes sudo reboot. On the other hand, doing an su -s still seems to work. It's purely the sudo that is frozen, and it seems to be related to being plugged in to the network via the USB adapter.
As a side note, this does NOT happen when I use KDE as my window manager; however, I usually use exwm (emacs). I can't even think of a possible explanation. Any ideas?