I have an intermittent problem with my Logitech wireless trackball on MacOS; from time to time the scroll wheel simply stops working and the only solution is to restart the whole machine. I didn't spot this issue on other operating systems.

Apparently, the problem is caused by Logi Options software that I had installed for its helpful features like assigning options to buttons, so I don't want to brutally uninstall it. Thankfully, I've managed to find a quick and easy fix when the scroll wheel stops working. Since the problem happens very rarely, it's not even that pain in the ass.

The only thing you have to do, is to kill the Logi Options daemon and let it restart automatically.

% ps x | grep -i logi
12258   ??  S      0:06.20 /Applications/Logi Options.app/Contents/Support/LogiMgrDaemon.app/Contents/MacOS/LogiMgrDaemon --launchd
% kill 12258

Or simply:

% killall LogiMgrDaemon

After that, the daemon will start automatically, and your scroll should work again.