This 'fix' will work with all computers and all OS's. However, you can disable the switch in hardware, if you must: use the tweezers to repeatedly bend and finally break off a wire going to the wheel switch. This is far more satisfactory than disabling a useful switch. Log out, log back in, and you should be all set. Set xbindkeys to load on startup: /.bashrc xbindkeys -p. Create xbindkey configuration file: /.xbindkeysrc 'echo -n xsel -n -i pkill xbindkeys xdotool click 2 xbindkeys' b:2 + Release. I'm not sure what the correct name for the middle mouse. xmodmap -e 'keysym F1 Escape' -e 'keysym CapsLock '. I use that tool to disable the Caps Lock key and rebind F1 to Esc. Alternatively, push a bit of springy closed-cell plastic foam between the switch and wheel so as to increase the force needed to depress the switch. Install packages: sudo apt-get install xbindkeys xsel xdotool. You might be able to disable the middle-click altogether, using xmodmap (1), but that will of course probably not be desired. If the middle mouse switch has an open spring, carefully bend the spring so it presses up against the wheel a bit harder.

Remove the screw(s) and gently, slowly pry top from bottom, being careful not to drop loose parts inside - note where the parts go, such as between button and microswitch. Remove the screw (s) and gently, slowly pry top from bottom, being careful not to drop loose parts inside - note where the parts go, such as between button and microswitch.

Find an assembly diagram for the particular model, or just look for a screw or two on the bottom, sometimes hidden by a label or underneath PTFE pads (used to make the mouse glide better). those in eyeglass repair kits) and fine-tipped tweezers. Most mice are easily disassembled and fixed I've done so more than once.

Disable middle click scroll