The title says it all.  Android 5.1 lollipoop...

I turn off the adaptive display brightness and set my brightness manually.

Since lollipoop sucks for muting your device I turn all volumes down all the way manually.

Give the tablet about 2 hours and poof on its own whether being used or just sitting on the table the adaptive display is turned back on and the sounds are set back to what they were before I turned them all the way off. 

This really sucks and as soon as I can find a way to ensure game data is saved I plan on rooting and then downgrading to at least kit Kat 4.4.4 unless someone can give me a solution to stop these two issues from happening!!!

Anyone any ideas???

And yes I have factory reset twice now and it still happens.  Was putting up with it until it started happening at night and being woken up by Facebook popping notifications...  Had to turn those off but need the notifications for american legion updates...

So this is Google's cunning plan. Roll out Lollypop to 1st gen Nexus 7 and 1/2 brick them, so you are encouraged to buy a 2nd gen!
Boot up time is painfully slow, WIFI is too keen to drop out and tap the screen anywhere at any time it'll freeze, blank the screen for a couple of seconds then put you back where you came from and it has a think as to what it is suppose to do next!
When I (sorry when it chose to) update from jelly bean to kitkat it took a while for the performance to get back up to speed, but I am fast loosing patience with Lollypop.

Lollipop 5.1 is out now, so make sure you're up to date.

Lollipoop 5.1 is just as bad on my 1st gen!

Lollipoop is bad to begin with as I set my sound down all the way, turn off the adaptive brightness and after I unplug from charging my settings are not kept!  What a joke 5.1 is!!!

I have had my last straw with lollipoop and it is time to go back to kit Kat...  At least then I could do something versus now I am lucky if it turns on in 10 minutes...