And the USB-cable is connected to an adapter, and I've tried reconnecting that as well. I've tried reconnecting the USB-cable.It's only my external mouse (the scroll-up feature) that doesn't work. The built-in touch mouse works as it should.But I don't want to switch mouse-model, since this is the best mouse across all other areas. I have tried several different mice-models, and this is the only model it has happened with.My gut feeling tells me that it has something to do with, if I have been scrolling, when it crashes. It's not every time it crashes, but I'd say 80% of the times.It has happened about 20+ times so far, and it's always scroll-up that won't work.But then I did it again, which then solved it. However once, I got it working by simply reboot.Īnd another time I tried that the clearing of the PRAM didn't solve it. So I'm pretty certain, that it's a software-issue. I can get it to work again, by rebooting my machine and clearing the PRAM (holding down CMD + Option + P + R upon startup). Scrolling down keeps working - it's just scrolling up. When I start it again, then I'm unable to scroll up, on my external Logitech Mouse. My Mac crashes somewhere between once per day and once per week, when I have too many applications open.
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