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[Resolved] Wireless mouse scroll 'jumps' - scrolls in reverse a little - Logitech M275 teardown & cleaning

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Just quoting my exact problem from this  post- ' When I scroll up, every now and again it suddenly scrolls down a bit, and when I scroll down it jumps up every once in a while'. SOLUTION: Teardown & cleaning of the mouse. It is super effective! The same problem never showed up again.  My mouse model is Logitech M275 - and as there aren't that much teardown tutorial for this model out there - I'll just post my process of tearing it down, for future reference. 1. My mouse -  Logitech M275 2. The single screw can be found behind the battery. Unscrew it. 3. Pull the entire cover upwards from the base. It will look like this after the cover is removed.  4. Notice the axis of the wheel. That's where we're gonna do a simple cleaning. To remove the wheel, we have to seperate the PCB from the plastic base. Bend these two clips highlighted in circles to make clearance and pull the PCB upwards: 5. Now the wheel can be easily removed by pulling

[RESOLVED] Unable to login in Oculus Setup, error OVR40779122

The Problem: Error trying to login Oculus account from  Oculus Rift S Setup : OVR40779122 My guess: I'm accessing from behind  the Great Firewall of China , Oculus servers are probably being blocked. Using ShadowsocksR with my proxy couldn't resolve this problem though. Solution: Adding Oculus hosts These lines go at the end of C:\Windows\System32\drivers\etc\hosts: 157.240.11.49 graph.oculus.com 157.240.11.49 www2.oculus.com 157.240.8.49 scontent.oculuscdn.com 157.240.8.49 securecdn.oculus.com Note: There are other solutions on the Internet, for example changing the ipv4 DNS to a public one, e.g. 8.8.8.8, but this didn't work for me. Still not sure if it works for others, so I'm leaving it here.