Hey guys,
i have a weird problem. I'm depending on the wifi from my neighbour atm (he gave me the key - everything legit ) and i tether it via my Desire HD to my PC. But there's this strange behaviour i discovered: When the Display is turned on, i get a ping of about 30ms. When the Display turns of it rises to about 600-800ms.
I have a rooted DHD with Cyanogenmod 7.0.2.
I tried to fix the CPU speed to 1GHz - Performance with SetCPU but it didn't help and i set the wifi connection not to go in standby whilst the display is off.
Does anyone have an idea about this?
Jack
It seems that some of the DHD's Hardware does go into standby although you disabled a few options.
Maybe this could be solved with another kernel, but i guess you would have a higher battery drain then, even without tethering.
Why don't you just leave the screen on? Start its desktop clock and it'll be a nice gadget on your desk
DN41
Hi Jack,
I have a base rom or whatever it is called. I have the same problems. I tether using my 3G connection. When the device display is turned off, the tethering has speed issue, while it is turned on, tethering works fine. I haven't found a solution yet. i just keep my display on, since its connected to pc, it will be in charging state.
Regards,
HD
Hey guys,
thanks for your replys, the best idea would pobably be (for now) to leave the phone in "desktop-clock-mode".
Thanks for your Help
Not a fix but a work-around...
Since I guessing the phone is connected to the PC, could you not set the phone to not sleep when charging (menu -> settings -> Applications -> Development -> Tick "Stay Awake")? That way the screen will stay on when ever it's charging be it mains or via USB
(EDIT: Appreciate you get this using desktop clock but this saves having to mess about every time.)
Change your wifi power saving options. The behavior you get is default, to save battery life. It's under the advanced settings in the Wifi settings, IIRC.
leppie said:
Change your wifi power saving options. The behavior you get is default, to save battery life. It's under the advanced settings in the Wifi settings, IIRC.
Click to expand...
Click to collapse
If you're talking about the sleep policy the OP says he's done that already.
Changing the sleep polici doesn't do it
Thanks for the hint with the display staying on while charging!
according to several post(just google network location battery drain) and my experience, keep the Use wireless network option on in location & security settings(in ics it's in location services-google's location service) causes notable battery drain.
if you enable the option, you will know your position very fast on map, even indoor. but at the same time, the phone will try to get your position by gps ,scan all the wifi hotspot nearby,get your cellular information,and then upload them to google. so your phone will get a lot of wakelocks, and gps will be on for a long time, all of these cause battery drain.
on my device, when using 3g ,the battery drain is about 1%+ per hour when disable the option but 2%-3% when enable the option when stay at home. if i go outside and keep moving on car or bus, the battery drain will become to 6%~8%. these numbers are with screen off. also, if enable latitude, the battery drain will be 10% per hour.
i know on cm, you can enable/disable the option by 3rd party apps,so i can use tasker to get this option enabled only when i open maps. but on stock roms, you cannot do this.
is there a better way to get both fast position and good battery life?
or is there any easy way to mod the rom so i can change the option by 3rd party apps?
if you are moving wifi search is a total waste of power
and wont offer much more accurate positioning than the tower you'r on
if you do manage to lock
the power widget is your friend
fwiw
If you're outside screw the wireless, gps should be good enough on its own...
Sent from my SPH-D700 using XDA Premium App
This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the 3 choices. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it.
#Its only for those beginners who dont know about this setting...
dont you mean tick always, as if you tick never itll go back to using your dataplan instead of the wifi
Re: [Guide] Save Battery By Keeping Wi-fi Alive
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Results may very due to your services supporting fast dormancy, etc.
Sent from my GT-I9300 using xda app-developers app
Re: [Guide] Save Battery By Keeping Wi-fi Alive
koolshubh said:
This tip is one that seems counter-intuitive, but you can save a lot of wear and tear on your Android phone's battery if you tell it to keep the Wifi radio turned on and connected while the phone is sleeping. Your phone needs a lot of juice to keep pinging those cell towers, and even more to transmit data to and from them. Wifi radios use much less power because of their design, and they don't have to keep searching for a better access point. It's the way cellular data communication was designed, and it's a necessary evil.
But what if you're spending all day (or all evening) in one place, connected to Wifi? If you tell your phone to shut off Wifi when idle, it bounces back to cellular data (be it 2G, 3G, or 4G) and starts sucking down the electrons again when the screen shuts off. That's no good, and easy to fix:
Open the advanced Wifi settings by pressing the menu button, then Settings, Wireless & networks, Wi-Fi settings, and tapping the menu button again. You'll have a choice to either Scan, or go Advanced -- go Advanced.
Tap the Wi-Fi sleep policy entry, and you'll get a pop up dialog with the 3 choices. Choose Never.
Now even when your phone goes into standby mode, you'll stay connected to Wifi and be able to get mail and messages without turning the cell radio back on and trouncing your battery life. And for the times when you're not in an area with a Wifi connection, just shut Wifi off, either through the menu or with a handy toggle widget. Your battery will thank you for it.
#Its only for those beginners who dont know about this setting...
Click to expand...
Click to collapse
You need to choose "Always", not "Never". If you choose "never", then it disconnect wifi as soon as display is turned off.
SlimJ87D said:
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Click to expand...
Click to collapse
If you're moving out of wifi range, or in and out of wifi range, turning wifi off will use less power as associating with an AP has a high energy cost. But as the original poster says, if you're going to be sitting in one place all day e.g. at home or at the office where your phone will always be connected to an AP, leaving wifi on and always connected will use less power than 3G.
More details here:
http://people.cs.umass.edu/~arun/papers/TailEnder.pdf
I suppose it's not that surprising. I'm sure many of us, after buying a new phone, have left the old one sitting around at home without a SIM card but connected to wifi, still polling emails and everything. The battery lasts ages!
Re: [Guide] Save Battery By Keeping Wi-fi Alive
This might be irrelevant, but i red an article her in xda about modern mobiles battery long time ago.the article said that when wifi on or off has no significance effect on battery life (regardless of other sitting like carrier signal .....etc)
Sent from my GT-I9000 using Tapatalk 2
SlimJ87D said:
I use to believe this but for some reason on my sgs3 wifi drains more battery I get more juice with wifi off.
Results may very due to your services supporting fast dormancy, etc.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Apparently FD doesn't affect battery life that much (See here, second post). I get better battery life on wifi and I think that's still the case for the majority of people if they are within a wifi area.
I tried and with option "always" I have more battery drain, cca. 2%/h in idle/screen off/overnight. With old setup when Wi-Fi is off in case screen goes off, I have cca. 1.6%/h. So, it doesn't work for me. Thanks anyway.
What ive found is to turn your 3g to 2g, that will save a LOT of battery. I use 3g if im out and about where theres no wifi, if im at work i dont use my phone often so switch 3g to 2g. It still brings my notifications in time. And at night switch to 2g as well.
Re: [Guide] Save Battery By Keeping Wi-fi Alive
Raz88 said:
What ive found is to turn your 3g to 2g, that will save a LOT of battery. I use 3g if im out and about where theres no wifi, if im at work i dont use my phone often so switch 3g to 2g. It still brings my notifications in time. And at night switch to 2g as well.
Click to expand...
Click to collapse
But that's a no brainer! Of course battery life will last a lot longer on 2G! Your battery life will also last a lot longer if you have no data connectivity. The discussion here is between data and wifi.
Sent from my GT-I9300
Thanks good tip
Hi guys
I noticed countless times that randomly when turning on wifi and then turning it off, the "always allow scanning" under advanced options is ticked.
I noticed this because then under battery usage you will see wifi active even tho main switch is off and 99% of the time that is why.
Is it a lollipop 5.0 bug or is it some of my apps that can switch that option when they detect wifi has been activated?
Also, it seems that if i dont turn on wifi in the first place, that option never becomes active. Battery life is very good on my phone so not a deal breaker....
Anyone knows?
Thanks
So I was using PA and now on PN. FK then and now EX kernel.
I still have the same problem. The Wifi is ALWAYS ON even after I turned it off or after I placed it on airplane mode.
Now before you all say turn off Wifi Scanning, Bluetooth scanning and keeping WiFi on or off.
Like in Pictures:
-Bluetooth and Wifi Scanning is off
-Keep Wifi ON during sleep only when plugged in
The only way I can turn it off is to restart my phone or reconnect to a network and disconnect.
I notice if I exit the house and turn off Wifi some time later the WiFi will be off but seen in detail battery stats and stays that way till I connect to another network and disconnect properly, Or I leave & turn off the Wifi properly before I exit the Wifi range.
WHAT IS THIS PROBLEM?
It''s kinda that I need to always do this. If I forget and I have a large bar of WiFi and need a restart. -_-
I have average battery life 4hours SOT and get 12hours of Battery life. Clean flashed PN but flashed a back up of my Apps from Titanium.
Thanks guys in advance!!
Hope someone can give me a solution for this!
Have a nice one!:good: