@THenrich Turn on location and step outside under a clear sky--that's the ONLY way you'll get GPS to work. Alternatively, turn on the high accuracy mode and let it use your internet connection via Wi-Fi to get your location, much faster. Then turn it off.
No that's not the only way gps works. GPS can work indoors depending on the building type and your location in it. Other apps like Yelp and Foursquare work just fine for me when I am indoors and they find my location when GPS is on. A GPS test app is showing several satellites so why on earth is Flux having a hard time to lock my location? All these apps talk to the same GPS API unless Flux wants like at least 20 satellites to lock on!
Also it gets a reading when I am outdoors and when I go inside it's back to 'Trying to find location..'. Remembering my location few seconds ago is not good enough!? The fact that it doesn't even ask the user to turn on the GPS tells me its GPS feature is not fully baked. Let me enter my location manually and be happy. The Flux app doesn't need to know my EXACT location to work properly. A city name is good enough. A zip code is enough. Heck a whole state can be good enough. The app is about colors. I am a software developer and if I worked on this app and I can't get location by GPS then I would default to other means like go active and ask the user how many hours should the app be active. Do you want this to be the default from now when I can't get your location. Yes Please. I"ll save these settings. OK we're done. These apps don't need to be over engineered and inflexible.
Yeah I am ranting. I use Flux in Windows and Android and they are obsessive about device location for it to work when there are users who sleep during the day and read at night and users who just want warm whites all the time and there's no way to do this other than daily settings. The UI and options are pretty different on the two versions as if they are two developers or teams who do not talk to each other.
If you use f.lux, i assume you have root. Check out this XDA thread "http://forum.xda-developers.com/android/general/guide-extreme-battery-life-t3095884". I can tell you that you will see a difference in battery consumption especially when you are not using your phone. In addition i also use coolify to control battery temperature when playing graphics intensive games. My phone's battery doesn't seem to overheat so much but that might be just a placebo effect so try it out yourself and see if you want to.
I haven't used Purify but i assume its more or less the same as other CM battery saving apps. IMO those don't really work as well as Greenify, Amplify and Powernap. These work at system level that's why root is required. Greenify hibernates apps and stop them from running in the background. Powernap stops certain apps from waking up the device when in deep sleep and so does Amplify but with better control over specific GoogleServices wakelocks which are one of the major cause of battery drain.
@THenrich It is for the bedtime mode. The sunset mode is what f.lux uses to warm up the colors and get you more relaxed. The (not so new) bedtime mode gets more red almost to really get rid of blue, and this is when f.lux thinks you should start going to sleep. Here is the user guide for mac:
@susanlau Caches exist for a reason, and a damn good one: to SAVE things that you might just use again. Linux kernel does this as well, as does newer versions of windows beginning with Windows 7. Caches keep things hidden in RAM but they aren't really running. I think this is why you can go to a bunch of applications and say "force close" but they aren't eating up CPU, even on ones that don't use notifications. They're just in the background in RAM probably cached for a faster startup.
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