Hi all,
The Wifi on my SGSII is constantly scanning even though it is connected to my home wifi network (a WPA/WPA2 PSK secured connection on a G band router). The signal strength is "excellent" and I have the phone sitting right next to the router. Further, I have network notification turned off ( unchecked) and under advanced settings, my Wifi sleep Policy is set to "never".
Sprint users have reported exactly the same problem on the Epic Touch 4G" (http://forum.xda-developers.com/showthread.php?t=1272226 ). Has anyone else been experiencing the same issue on their ATT SGS2 ? I would be very grateful if someone could post a solution for this issue.
Thanks in advance
J
PS: My wifi setting screen looks like this genteman's ( except i have network notification turned off)
(http://keithandlaura.smugmug.com/Other/test/i-sMwh6bj/0/L/SC20110921-212528-L.png)
jwlkr said:
Hi all,
The Wifi on my SGSII is constantly scanning even though it is connected to my home wifi network (a WPA/WPA2 PSK secured connection on a G band router). The signal strength is "excellent" and I have the phone sitting right next to the router. Further, I have network notification turned off ( unchecked) and under advanced settings, my Wifi sleep Policy is set to "never".
Sprint users have reported exactly the same problem on the Epic Touch 4G" (http://forum.xda-developers.com/showthread.php?t=1272226 ). Has anyone else been experiencing the same issue on their ATT SGS2 ? I would be very grateful if someone could post a solution for this issue.
Thanks in advance
J
PS: My wifi setting screen looks like this genteman's ( except i have network notification turned off)
(http://keithandlaura.smugmug.com/Other/test/i-sMwh6bj/0/L/SC20110921-212528-L.png)
Click to expand...
Click to collapse
Scan rate is bumped up significantly when you're in the settings menu.
Have you confirmed via logcat that it's scanning frequently outside of the settings menu? It shouldn't be in that case - but without logcat it's almost impossible to tell.
Entropy512 said:
Scan rate is bumped up significantly when you're in the settings menu.
Have you confirmed via logcat that it's scanning frequently outside of the settings menu? It shouldn't be in that case - but without logcat it's almost impossible to tell.
Click to expand...
Click to collapse
Entropy,
What should I be looking for in logcat? I have Betterbattery stats installed and according to that, Wifi scan time is 8+ hours even though Wifi on time is only 2+ hours. That doesn't seem to make sense, but what do I know.
I am running UnNamed 1.3.1.
johny_i said:
Entropy,
What should I be looking for in logcat? I have Betterbattery stats installed and according to that, Wifi scan time is 8+ hours even though Wifi on time is only 2+ hours. That doesn't seem to make sense, but what do I know.
I am running UnNamed 1.3.1.
Click to expand...
Click to collapse
I believe BBS is reporting scan time improperly. I've seen that in a few threads.
Sent from my GT-P7510 using Tapatalk
You're probably right, except now scan time doesn't even show.
I have also observed this on my phone.
I have a Samsung Galaxy IIs, using a Sony Ericsson MW600 BT handsfree as well as a Pioneer car Bluetooth handsfree system.
I have not measured anything yet, but I notice that when the Wi-Fi scanning is going on, I get significant disturbances on both of my Bluetooth hands-free sets. Listening to music is without a hitch, but talking on the phone (Norwegian GSM - operator Telenor) is terrible.
i also noted this after installing the OTA update to 2.3.6 today. I just rooted mine yesterday after reading 54+ pages to make sure i understood everything. i had a cappy and loved installing new roms but have not taken the plunge yet on the sgs ii. I haven't noticed a huge difference in battery yet, but it has only been a couple of hours since the update.
What ROM are you running? You can edit the build.prop to change how often it looks for networks. It is the line "wifi.supplicant_scan_interval=xx". I set mine to 180 which is 3 minutes, some ROM's set it really low. Also the scan rate is bumped up significantly when you're in the settings menu like Entrophy said.
Hi,
I had the same problem where my WIFI was fluctuating.... I dont know if this is the problem/ solution but this is what happened...
My SGS 2 is already rooted and unlocked. I had flashed the Entrophy DD 12/23 first then I had flashed Unnamed Custom ROM. After rebooting the phone, I saw the Wifi was not stable. So I again did a "Wipe Factory Data Reset" and "Wipe Cache Partition" and then installed the Unnamed Custom ROM from the SD Card. My Wifi is pretty stable now.
I am not sure if you guys had this issue when flashing a ROM but this seemed to fix it.
Wifi Scan - Milliwatts
ktoonsez said:
What ROM are you running? You can edit the build.prop to change how often it looks for networks. It is the line "wifi.supplicant_scan_interval=xx". I set mine to 180 which is 3 minutes, some ROM's set it really low. Also the scan rate is bumped up significantly when you're in the settings menu like Entrophy said.
Click to expand...
Click to collapse
I have written about this wifi-battery drain a while back here in XDA.
When I used to have my Nokia symbian cell phone I used to flash custom roms
and there were a lot of nice new features after flashing.
A couple of the really nice battery saving mods were:
#1: added option to change the amount of wifi milliwatt output from 18 milliwatts (default) to 3 milliwatts
which is more than enough if the phone is no more than 20-25 feet from the wireless router.
(the mod gave the option of 3mw,6mw,12mw & 18mw)
Saves a lot of battery life.
Don't know why none of the DEVS have addressed this issue yet.
#2: added a mod so once the wifi establishes a connection it no longer scans
at all unless the connection is disconnected or lost.
So in other words, the phone only scans for wifi until it connects.
Right now I am connected to wifi with my phone and yet in settings it displays "scanning"
non-stop-constantly even though in wifi settings it displays "connected".
Why should the phone be scanning for wifi if it's already connected? (I have no idea).
Don't know why none of the DEVS have addressed this issue yet either.
Both of these mods really made a noticable difference in battery life
for for me since I do use the wifi feature in my phone a lot.
Hopefully one of the DEVS can look into these issues soon.
Now someone mentioned wifi constant scan, I noticed mine is doing the same thing. I leave the wifi setting screen on, it re-scans every 3 seconds!
Misterjunky said:
I have written about this wifi-battery drain a while back here in XDA.
When I used to have my Nokia symbian cell phone I used to flash custom roms
and there were a lot of nice new features after flashing.
A couple of the really nice battery saving mods were:
#1: added option to change the amount of wifi milliwatt output from 18 milliwatts (default) to 3 milliwatts
which is more than enough if the phone is no more than 20-25 feet from the wireless router.
(the mod gave the option of 3mw,6mw,12mw & 18mw)
Saves a lot of battery life.
Don't know why none of the DEVS have addressed this issue yet.
#2: added a mod so once the wifi establishes a connection it no longer scans
at all unless the connection is disconnected or lost.
So in other words, the phone only scans for wifi until it connects.
Right now I am connected to wifi with my phone and yet in settings it displays "scanning"
non-stop-constantly even though in wifi settings it displays "connected".
Why should the phone be scanning for wifi if it's already connected? (I have no idea).
Don't know why none of the DEVS have addressed this issue yet either.
Both of these mods really made a noticable difference in battery life
for for me since I do use the wifi feature in my phone a lot.
Hopefully one of the DEVS can look into these issues soon.
Click to expand...
Click to collapse
Power control - Not likely, unless there is some documented power control already in the driver it's not going to happen. We're in a bad enough state as it is trying to make the chip not fire interrupts at 1 Hz on the Infuse.
Broadcom is one of the least open source friendly chipset manufacturers on the planet - their drivers have NO comments or documentation whatsoever, and datasheets are not available.
The rescan stuff is probably only addressable on Cyanogenmod, messing with it would require source code for the userland wifi management stuff.
mickey4mice said:
Now someone mentioned wifi constant scan, I noticed mine is doing the same thing. I leave the wifi setting screen on, it re-scans every 3 seconds!
Click to expand...
Click to collapse
As stated earlier in this thread - this is by design. It is assumed that if you're in the settings screen you want to change networks and have an up-to-date list.
I also am having this problem. I am running the rooted UKK6 from entropy512. After turning on my wifi, my battery drained from 90% to 70% in 5 hours with no use. My android OS is running at 80-90%. I don't have any extra apps except for 3g watchdog and CPUSpy and BBS. I do have Go launcher and GoSMS installed. As soon as I turn wifi off, i can see my battery level off under settings. I have searched for the last 2 days for a "fix". no luck.
Battery Drain
hatgirl223 said:
I also am having this problem. I am running the rooted UKK6 from entropy512. After turning on my wifi, my battery drained from 90% to 70% in 5 hours with no use. My android OS is running at 80-90%. I don't have any extra apps except for 3g watchdog and CPUSpy and BBS. I do have Go launcher and GoSMS installed. As soon as I turn wifi off, i can see my battery level off under settings. I have searched for the last 2 days for a "fix". no luck.
Click to expand...
Click to collapse
Try doing a clean flash using "wipe data/factory reset" in CWM
recovery and then see if the phone has normal battery drainage.
(which it will if you flash the UnNamed v2.2.1 custom rom)
Then install one app at a time so you can find out exactly which
app is the culprit that causes your excessive battery drain.
This is the best way to trouble shoot battery drainage issues.
You will see that your battery drainage issue is not caused by
the custom rom, but it is caused by a few apps which are just
not very battery friendly.
The UnNamed v2.2.1 rom is the best custom rom currently
available for our i777 phones and it has outstanding battery life.
Good Luck!
hatgirl223 said:
I also am having this problem. I am running the rooted UKK6 from entropy512. After turning on my wifi, my battery drained from 90% to 70% in 5 hours with no use. My android OS is running at 80-90%. I don't have any extra apps except for 3g watchdog and CPUSpy and BBS. I do have Go launcher and GoSMS installed. As soon as I turn wifi off, i can see my battery level off under settings. I have searched for the last 2 days for a "fix". no luck.
Click to expand...
Click to collapse
This has nothing to do with this thread - This thread is talking about wifi scanning.
Drain problems - read my known battery drainers thread. A lot of people are having problems, there is no fix, and there won't be until all the people complaining start actually collecting some data.
Has anyone hit an issue whereby battery drain is high on a particular wifi network.
In my case this is a busy (1000s systems in subnet) corporate wlan running EAP-TLS. Many access points.
At home (using speedmod and siyah kernels) battery life is excellent.
But in the office when this occurs battery drain occurs at a similar rate to web browsing. System is not sleeping as much as usual, and it's not all 200 Mhz running either.
Not yet been able to pin down the behaviour, though it occurs with pretty much all user application processes killed (frozen). Disabling wlan puts usage back to normal, re-enabling wlan hits the issue again. going home (no reboot) and onto my home wlan results in normal battery again with high % sleep.
I'm guessing it relates to traffic on the wlan - maybe lots of broadcasts, maybe re-authentication issues.
So has anyone found issues with battery drain in busy WLANs?
Running rom KJ3
May have to get into tracing/wireshark etc to figure this one out...
in my quest to get a better battery life out of my phone (seen people saying 2 days battery life) i have tried 6-8 roms, 3 kernels and 5 modems. all of which give me less then 10-14hrs usage (i know thats fairly average for some of us)
IS there an app that can change cpu speeds based on what app is on the foreground?
my regular usage is:
1200mhz,
ondemand,
3g enabled all time,
~40mins talk time
~100sms
~45mins gaming/video (for train journey =D)
~5mins gps (to check for my bus home)
Push exchange emails
auto brightness
haptic feedback
Tablet-Mode
I have tested that for 70% of my daily usage this works fine for me:
500mhz,
lulzactive,
3g enabled all time,
manual exchange mail sync
but in testing games such as temple run i would need max 1ghz
(have yet to test with music yet... 720p video runs fine @ 800mhz and 1080p @ 1ghz)
i have seen there is a way to inject 3g to 2g toggle when screen is off, is there any way to do it without injecting into the zip? or inject directly into rom?
i think then i could run push emails without much problem. then my phone will really be ON DEMAND!
during 500mhz i notice a slight reduction in battery consumption (not as much as i thought however)
i am running D4ROM v10 with siyahkernel 3.1.2 with resurrection remix as dual booted rom. will prob be getting the 1900mah anker battery heard its decent and fits in normal cover, so yes please let me know if you do get longer then a day, and also if what i need is available (i have searched)
There is no need for such applications mate because android by itself handles the load balancing. The load increase/decrease is basically dynamic and hence you cant predict that.
Overriding that will only consume more battery.
well from the last 2 years of using android underclocking has always increased my battery quite a bit... even right now its consuming 2-3%/hr compared to 5/6% from 500mhz and 1200mhz in sleep, at the end it adds up!
I imagine Tasker could achieve your odd request, though I haven't checked.
oinkylicious said:
I imagine Tasker could achieve your odd request, though I haven't checked.
Click to expand...
Click to collapse
I have got the tasker 7 day trial and i can honestly say it is amazing! takes android to a whole new level!
got 2g and underclock & screent timeout 20secs when screen off, then when i use dolphin it connects to 3g, when i play games it clocks to 1ghz 10mins screen timeout. when i plug in OTG usb stick it opens mx video player !
only problem i have is when the screen times out it underclocks (say if ive opened a game) then when i wake the device and unlock again, - the profile says it should clock to 1ghz... but it is staying at 800mhz (which is the screen off max clock speed...) - temporarily just pressing home going to recent apps and opening the game again
p.s. using around 2-3% on sleep/hr and 4-5%/hr with moderate usage (few texts, browsing, play store)
Hi,
I am experiencing massive performance issues with my phone when I turn on
synchronization (just my google account)
The phone doesn't react properly anymore - screen is laggy, apps take forever to start up, I am almost unable to take any calls.
I monitored this behaviour with my previous phone (ZTE Blade running Stock and CM7) as well with mit current phone LG 2x (trying Stock / Custom Stock (Django Manouche) / CM9 Nova HD)
If I turn off synchronization everything is smooth again and working without delays.
A similar behavior is shown when apps (especially multiple updates) get installed - but that is probably because the phone is working. But I would have expected a better responsiveness from a dual-core phone
Does anybody experience the same behavior? - is there any help/workaround/setting to enhance the phone's responsiveness.
Cheers!
Borgond
Hello all, new here, hope this is the right place for this post...
I have looked everywhere and can't seem to find anything relevant, so maybe someone here may have some insight. To start, it is (Kingo) rooted stock ROM android 4.1.2, build M36UP61, kernel 3.4.0, just to avoid confusion... Here's the issues numbered so I can correlate answers for each:
1) WiFi will occasionally drop, but the issue is that after (I assume) 5 retries, it leaves the AP as "disabled", and I want it to never do that, like my kyocera hydro, which relentlessly retries until it gets a connection to a known AP. Essentially, to never give up on a known AP for any reason, even if having to connect at least once first. I can find nothing in build.prop or sysctl that seems to relate to this behavior, unless I missed something. Additionally, WiFi will drop despite >-72dB signal unless I am actually watching the WiFi AP settings screen for some reason. I have made minor tweaks to build.prop, however this behavior was occurring prior to rooting.
2) I am getting what appears to be OOM-related FCs (no toast ANRs, just a halt back to launcher), yet with what should be enough RAM and spare CPU at the time. This behavior also prior to rooting, and have tweaked some improvement, but it is apparently not enough. I have not messed around too much with DavlikVM settings, as it still is as intimidating as sysctl for me as a newbie at Linux. I have tried to logcat, but can't get a dump at all, it just doesn't seem to log in time. Am I looking at the wrong log?
3) Touch screen locks, and takes all hardware function with it, even just on the home screen. Hardware power and volume don't respond and touchscreen coordinates are locked in place (I have show touches enabled) with no change in anything else; game/app keeps running smoothly, but is convinced that I have frozen holding (or not holding) my touches in place. Recovers in anywhere between 15 seconds to never, requiring me to pull the battery. Persistent after factory reset (did prior to rooting), occurs only when cfq(?) governor is topped at 1001MHz regardless of CPU load. Occasionally multi touch (max 2) fails intermittently, or averages between them (hold both ends and it shows one touch in the middle).
Just to add, any way to kill autocorrect's tendency to put the wrong word in place of a correctly-spelled one in its dictionary? (Changed dictionary to functionary for no reason, both in database). Also, smaller functions drop out, like WiFi icon stops responding, autocorrect suggestions disappear at random, etc.