... to follow up: in fact, it has not resolved itself in the 15.04 release. Often, things work better in that as soon as the machine waits up, it is waiting for a fingerprint scan. However, the rest of the time, it hangs for a tens of seconds with the "authentication has timed out" error message, and then solicits a password, and only then (after something incorrect has been entered) solicits a fingerprint reading.
... to follow up: in fact, it has not resolved itself in the 15.04 release. Often, things work better in that as soon as the machine waits up, it is waiting for a fingerprint scan. However, the rest of the time, it hangs for a tens of seconds with the "authentication has timed out" error message, and then solicits a password, and only then (after something incorrect has been entered) solicits a fingerprint reading.
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