iPd, iTunes disagree on free space
My iPad thinks it has 1.5 GB free; iTunes says it has 8.58 GB free. That's a pretty big discrepancy.
I tried the fix suggested in this thread: iPad and iTunes disagree on storage space. It didn't work. Also tried a straight restart of the iPad, and restarting iTunes, both with the iPad connected, and not. No joy.
I'd appreciate any other suggestions.
This seems to be a chronic/recurring problem with iOS. Can someone explain it to me?
Thanks for any advice/assistance.
iPad Air/iOS 8.4/iTunes 12.2.1