Dear Tim,
I have a specific problem that several of your posts speak to. I have one student who completed a Quiz but in the Quiz Results report all the Responses are blank and under her name it says Never Submitted. On investigation I managed to view the full 'transcript' (all her answers to the manual essay questions and all the mcq question responses). But no grades even for the auto-graded questions. I tried the Regrade option in the Results report to no effect. I manually corrected her attempt. But it is worrying that this can happen.
I note in your posts you mention things like time out and abandoned tests but the process is not clear to me nor is moodledocs. In Quiz settings I set the timer on and allowed a grace period. My understanding is that if the student does not submit the quiz is submitted automatically at the time limit (in grace period). There appears to be a scenario in which a quiz can be "abandoned". Moodledocs states that "If a student manages to cheat and goes over the allotted time, no marks are awarded for any answers entered after the time ran out". This is just gobbledy-gook since "manages to cheat" is completely undefined. Your own post is clearer: you state that the student must abandon the test. But what exactly happens? Somewhere it is mentioned that if the quiz browser window is still open at time limit the auto-submit activates, which is as I expected. What are the conditions for never submit/abandoned: is it that the student closes the browser or tab?
I looked at mdl 35322 but I'm none the wiser. Hope you can advise.
Phelim