The amount on form 1099-B does not determine whether you need to file. It's the capital gain on the proceeds that determine if you have to file. If that gain is more than $1100, your are required to file (even if less than $2200).
In a case where a long term capital gain is more than $1100, but less than $2200, no tax will be due (the LT gain is tax at 0%) but you are still required to file.
