Soundcard inputs not detected

I find myself switching between audio drivers fairly regularly in Cubase, and today when I went to switch from my headphones to my soundcard speakers (this is also how I record, as I cannot use my soundcard inputs when using front panel audio headphones) I found that the outward connections of the ASIO driver I was using were connected, but my inputs show up as “Not Connected 1/2” under Port System Name, and there’s no signal being put through to Cubase, despite the soundcard picking it up fine. Any ideas?

Just downloaded Elements 11 to have the same issue. Now to trawl the forums.