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I have a Logitech vertical mouse. I can move the mouse and click. The scroll wheel does not register on macOS, neither in Safari, nor Finder, or other.

On Linux, it works like a charm. Therein, I can also use xev, and see any mouse panning, click, or scroll, trivially.

How can I dump mouse wheel events, at different layers of the stack? Over USB, since it's HID, could just use Wireshark and USB capture… if it's implemented on OS X. But further up?

  • xev works in macOS as well. You'll need XQuartz, but it works. Also, see if you can boot into Safe Mode (hold Shift while booting) and see if scrolling works there. I've used Logitechs exclusively for probably the last two decades and never had an issue with the scroll wheel on macOS – Allan Feb 19 at 22:40
  • Have you got r he logitech h syst m preference pane from the logitech site? – Mark Feb 19 at 22:44
  • No. I was hoping to avoid installing out of tree drivers for something that shouldn't, in principle require it. Basic HID should be part macOS for a while. I was also hoping to avoid XQuartz since it may be a few layers removed from the part of the stack. But then again, I don't know how XQuartz integrates with the rest. – pilona Feb 19 at 23:59
  • Logitech are terrible for not using standard structures; I have a similar issue with their MX Master. After years of being able to set up buttons & wheels using SteerMouse or USB Overdrive on my old mouse, I am now stuck using their own inadequate Control Panel instead. – Tetsujin Feb 20 at 7:26

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