Husband and sleep problems?

My husband has been diagnosed with ADHD since he was very young (five or six years old). He still struggles with it but has made a lot of improvements. Additionally, he isn't on medication now but will soon be again. With or without medication though, his sleep problems are a constant source of frustration. I was wondering if anyone else had problems with an ADHD spouse and sleep habits. I know it sounds totally crazy, but my husband is constantly tired. He can sleep 9 or 10 hours and still complain of exhaustion. He can sleep through his alarm--for over an hour. He has trouble getting out of bed earlier than 8:30 or 9 am.

It is incredibly frustrating and although I've learned to work around it somewhat, there are some days I have to get him up and I'm actually terrified to do it because he's combative, angry and sometimes mean--even after getting over 10 hours of sleep. I'm writing now because although he got 9 hours of sleep last night, he laid down to take a nap...almost three hours ago. He constantly complains of being too tired and I'm wondering if it's related to his ADHD. I know it seems so counterintuitive, but he often has trouble falling asleep and he sometimes complains about "waking up a lot" during the night. Is it all related?

If this has happened to you and your spouse, do you have any tips for me? I think I'm feeling resentful and angry about it and I don't want those feelings to get any stronger! He's 30 years old--I shouldn't have to wake him up in the morning to get to work on time.