sudo nano file saving pinephone beta edition

[Gumur]

I have run into a simple yet gamebreaking issue. My virtual keyboard does not recognise the ctrl+x input that would allow me to save changes in files. or rather.
I've run into the issue of the screen shutting off after a half second when not on charge (and only when not charging), but have been trying to manually change the screen settings in powermanagementprofilesrc file. but because I cannot save my changes, my phone is unusable when not on charge. what could I possibly be doing wrong?
I am running kde plasma, for reference. and let it be known I am a recent convert from windows and ios, and have minimal knowledge of linux.

See this: https://forum.pine64.org/showthread.php?tid=15216