Bugzilla – Bug 12252
Controller should wake from suspend quicker
Last modified: 2019-01-25 10:38:47 UTC
(I thought there was a bug about this, but I can't find it) I'm running 5580. I have installed a new battery in the controller. After little more than an hour out of cradle, the battery level is already below full. During almost the whole hour, the controller was asleep. (Not suspended). I have changed the suspend timeout back to one hour. The problem with quick suspend is that it takes too long to resume - 20 seconds or more. When the phone is ringing, that's simply too long to wait before I can pause the music! What is needed is the best possible power save mode that supports quick resume. If the current sleep mode is that, then there is a problem with battery operation. I now leave the controller in the cradle even when I'm using it, which is not as convenient as only using the cradle to recharge. Finally - I really don't think it used to be this way. When I first got my duet a year ago, I never thought about the cradle, and don't remember this problem. I've called this an enhancement request since the enhancement is a better low power, quick resume mode. But there is a bug hidden in here as well.
I agree it would be nice if the Controller could wake from suspend in less than 20 seconds. Perhaps Richard will find time to optimize this in some way. After an hour of sleep (not suspend) I expect the battery voltage will reduce, this sounds normal. Sleep uses more power but the Controller can wake quickly. Suspend uses less power but the Controller takes about 20 seconds to wake currently. Assuming that Richard has already optimized the wake speed as much as he can then we need to use a careful balance of suspend and sleep behavior to maximize battery life while not sacrificing the user experience.
Richard is no longer available to us.