Tech trouble ends in god-awful irritation (6)
I believe the answer is:
glitch
This might be a double definition.
'tech trouble' is the first definition.
(a glitch is a computer problem)
'ends in god-awful irritation' is the second definition.
The definition and answer can be both states of affairs as well as being singular nouns.
Maybe you can see a link between them that I can't see?
(Other definitions for glitch that I've seen before include "Technological problem" , "Small fault preventing proper working" , "Computer problem" , "Failure to function" , "'Bug, fault in a system (6)'" .)