I believe ctrl+shift+m should be a default shortcut for creating display maths in lyx as is mentioned on https://wiki.lyx.org/Tips/FrequentlyUsedShortcuts and on my linux machine it does do that. However, on my windows machine nothing happens when I press those keys. So, I'm wondering whether this is expected behaviour on windows and furthermore how I could activate this shortcut?
Edit: I checked the preferences -> shortcuts and yes I have the standard cua shortcuts in which there is ctrl+shift+m for creating the display math and yet, nothing happens
Best Answer
The issue was that the hotkey was being intercepted by another program, in this case, AMD Radeon Software. Thanks for scottkosty for pointing this out in his comment, I had suspected something similar at first, however as I don't use any program like autohotkey so I didn't know what could be intercepting it, so yea if someone else is experiencing a similar issue, I reccomend checking all other programs with any system-wide shortcuts, fairly obvious in hindsight.