Develop Bugs

SOLVED[Q]Wifi continuously scans even though connected

I am on Legendary 2.1 and just had it pointed out and I verified that even though my wifi is connected to my router it continuously scans every few seconds. This has got to be a battery drain. Is there a way to turn off the scanner when connected or set it for every 5 minutes instead? Thanks.
Edit: Thanks TeamERA for explaining that it only does that while in the listing window so it can update the list immediately. It defaults to the scan interval in build.prop when that window is closed. Thank you.

I think romtoolbox allows you to change that Im not sure but you can check it out.
Sent from my OG Epic

Sorry root tools by jrummy allows you to change wifi scan intervals
Sent from my OG Epic

I'm pretty sure you should be able to turn off 'network notification' while connected...this should stop scans since this option is made to notify when a network is available. In theory, if its not notifying you if new networks are available, I would assume it's not scanning. Good luck
sent from my EPICally transmogrified EI22: Thunderhawk III- adrenaline injected, SUPERCHARGED

URwannabehack said:
I'm pretty sure you should be able to turn off 'network notification' while connected...this should stop scans since this option is made to notify when a network is available. In theory, if its not notifying you if new networks are available, I would assume it's not scanning. Good luck
sent from my EPICally transmogrified EI22: Thunderhawk III- adrenaline injected, SUPERCHARGED
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No It still scans even after disabling the notification
Sent from my OG Epic

I tried SleeperROM and it does it there too. Can someone look into making the scanner manual only?

kennyglass123 said:
I tried SleeperROM and it does it there too. Can someone look into making the scanner manual only?
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That would be awesome cuz you have to figure that's a lil bit of a battery drain.
Sent from my SPH-D700 using xda premium

I had the same problem on a few different roms
Sent from my SPH-D700 using XDA App

lilajrestnom said:
I had the same problem on a few different roms
Sent from my SPH-D700 using XDA App
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Click to collapse
Did you resolve it or it is still doing it?
Sent from my SPH-D700 using XDA App

kennyglass123 said:
I am on Legendary 2.1 and just had it pointed out and I verified that even though my wifi is connected to my router it continuously scans every few seconds. This has got to be a battery drain. Is there a way to turn off the scanner when connected or set it for every 5 minutes instead? Thanks.
Click to expand...
Click to collapse
I found a program called wifi buddy on the Android market. This program allows you to disable wifi scanning.
Sent from my SPH-D700 using xda premium

jamice4u said:
I found a program called wifi buddy on the Android market. This program allows you to disable wifi scanning.
Sent from my SPH-D700 using xda premium
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I will try that...thank you! Probably add hours onto my battery life on weekends at home with wifi on.

Wifi buddy settings only control that app not the system settings so disabling wifi scanning only worked inside app not to system wifi scanning
Sent from my SPH-D700 using xda premium

I'm not knowledgable enough yet, but has anyone looked into using SQ Editor? Perhaps something can be manipulated in system files to just disable intermittent scanning all together? Only initial scan when wifi is activated? Just an idea...

URwannabehack said:
I'm not knowledgable enough yet, but has anyone looked into using SQ Editor? Perhaps something can be manipulated in system files to just disable intermittent scanning all together? Only initial scan when wifi is activated? Just an idea...
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That's what I was hoping for. Can't seem to get a DEVs attention to look into this. Build prop edit doesn't do anything.
Sent from my SPH-D700 using XDA App

Trying to find any sort of process or folders in root explorer that relate to wifi/scanning and coming up empty...I'm with you Kenny, we need a dev to pick this up, especially if editing build prop showed no results
sent from my EPICally transmogrified EI22: Thunderhawk III- adrenaline injected, SUPERCHARGED

I think my phone is doing this too.
In betterbatterystats mmc_delayed_work (under kernel wakelocks) accounts for 90% of my wakelocks, this does not happen on 3G so it is definitely related to Wifi.
I thought it had something to do with my router (DIR-655) as other people said they experienced unusual drain with that router.. Not so sure now.

This is probably the main reason people are complaining about their battery life on the gingerbread builds. I think it is more of a EI22 issue. How did EH17 or the previous gingerbread Roms handle this and if it handled this issue better can we take something from to fix our problem.
Sent from my SPH-D700 using xda premium

It would be nice to actually have the system manipulated, however, I am pretty sure that Juice Defender has an option of wifi control...I think (and I don't fully remember, just went to Thunderhawk and haven't put it back, trying to figure out other ways to better battery, as is everyone else) that you can allow JD to stop all wifi unless user selected.

So I don't claim to be a dev, but I just thought of something that might lead you in the right direction. I remember a post about lowering the signal threshold on your phone to get better 4g connectivity a couple of months ago in the general section. Its a dialer code and you need your msl to gain access. This is one of the phone settings like at the bios level. When I did this, I was able to see a boatload of settings that you would not find anywhere in the os settings. If you know where I am talking about and know the dial code to get in there, I do remember seeing some wifi stuff. Maybe something in there you can change scan or retry rates, with signal thresholds that might work for you. Write down all changes you make if u need to go back.
Again, just a thought trying to help.
Sent from my SPH-D700 using XDA App

That's a good idea. I will check that out when I get a chance.

LCD density problem

OK I changed my screen density to 200 and now every app on the market says its not compatible with my device
Sent from my SPH-D710 using xda premium

There is an easy and obvious solution to this problem.

You may be exaggerating a little, but you're having the issue because a density of 200 isn't one of the "native" densities that Google's Android Market apps are meant to work at:
The "native densities" are 240, 160, and 1(20) or 1(40), I can never remember the last one, lol.
Simply switch back to either 160 or 240, and all those apps will "magically" become compatible again.
Sent from my PG86100 using xda premium

Reset to 240 or 160 , manage apps, select the market app reset cache then defaults, reopen market u r good 2 go
Sent from my NookColor using Tapatalk

_MetalHead_ said:
There is an easy and obvious solution to this problem.
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Instead of being rude. You could tell me something other than changing it back every time and rebooting the device
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mazook98 said:
You may be exaggerating a little, but you're having the issue because a density of 200 isn't one of the "native" densities that Google's Android Market apps are meant to work at:
The "native densities" are 240, 160, and 1(20) or 1(40), I can never remember the last one, lol.
Simply switch back to either 160 or 240, and all those apps will "magically" become compatible again.
Sent from my PG86100 using xda premium
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I was hoping not to have to keep changing it back. I will if I have to
Sent from my SPH-D710 using xda premium

paniro187 said:
Instead of being rude. You could tell me something other than changing it back every time and rebooting the device
Sent from my SPH-D710 using xda premium
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Click to collapse
Yeah I could tell you something useful but it would take more time for me to type out an actual response than for you to find a solution by simply SEARCHING. Just to test my theory, I searched for a solution with the search tool conveniently provided by xda and found one in about 15 seconds. You should try it next time, it does wonders.
In fact, there is a solution in the OP of a thread on the FIRST PAGE of this forum. What a coincidence.

I've mentioned the fix and why in several threads, searching would have found the answer.

You can get your apps from the Amazon or Samsung market apps also. Those markets don't have a issue with your "density"

Its funny the market suddenly doesn't have a issue now
Sent from my SPH-D710 using xda premium

Question on RomTool box/density changer and Cm9

How do i avoid getting the process.com android has stopped working. Seems like every setting I try it happens on. I'm using 160 now but other people don't seem to have the problem.

Onumis said:
How do i avoid getting the process.com android has stopped working. Seems like every setting I try it happens on. I'm using 160 now but other people don't seem to have the problem.
Click to expand...
Click to collapse
Are you using a theme? Some themes don't play nicely with dpi changes
Sent from my SPH-D710 using Tapatalk 2

MMS not coming through

I have continued issues with receiving picture texts.... I almost always have to tell the sender to send it once more for it to come through. I've also noticed my H bars turning from Blue to Grey when this happens.... Any ideas as to what could be causing this? At&t looks dumbfounded every time I go in or call about this....
Sent from my Galaxy Nexus using xda app-developers app

TBH, it sounds like an ATT issue.
I know the common thought is that grey bars means lost connections to Google, but when that happens to me, I have always lost network connectivity.

vodka7 said:
I have continued issues with receiving picture texts.... I almost always have to tell the sender to send it once more for it to come through. I've also noticed my H bars turning from Blue to Grey when this happens.... Any ideas as to what could be causing this? At&t looks dumbfounded every time I go in or call about this....
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Remove your Google account then add again. Reboot.
Edit, custom ROM? I went back to stock because of many random issues since 4.1.2 was officially released.
Sent from my Nexus 7 using XDA Premium HD app

mms is either apn related problem or just bad coverage (no good data in area)
you can google different apn settings to try

I have to use go smd to view mms depending on what ROM I'm using.
Sent from my Galaxy Nexus using xda premium

Uncheck auto retrieve and manually download them when they come. ThTs what I do on my vzw gnex as they sometimes get stuck if it have it auto and don't finish downloading.
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[Q]wifi dropping

I Can't find a thread about this, so I was go ogling and that doesn't really help. I am having major problems with my wifi it keeps dropping non stop and it's really annoying. I have my phone stock but rooted and was wondering is there any way to fix this? I know it's a Samsung problem but if I were to load this up with a rom should that help? Thanks in advance
Sent from my SGH-M919 using xda app-developers app

seedofchaos said:
I Can't find a thread about this, so I was go ogling and that doesn't really help. I am having major problems with my wifi it keeps dropping non stop and it's really annoying. I have my phone stock but rooted and was wondering is there any way to fix this? I know it's a Samsung problem but if I were to load this up with a rom should that help? Thanks in advance
Sent from my SGH-M919 using xda app-developers app
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Maybe it's your router or better yet the router settings. Have you tried changing any of those settings?

Am I missing something? How is it a Samsung thing? What kind of router do you have?
Sent from my SGH-M919 using XDA Premium 4 mobile app

After looking all night I found a thread that fixed this. You have two choices really to fix or buy your router which I'm not going to do, or you can type in on your dial pad *#0011#. Then you click your menu button, click on the wifi option, and then disable the energy saver wifi mode. That made it so my phone wouldn't drop wifi connection anymore. NOTE: each time you restart your phone you need to turn the wifi energy saver off through the command *#0011#. Hope I helped some of you because this bug is truly annoying.
Sent from my SGH-M919 using xda app-developers app

seedofchaos said:
After looking all night I found a thread that fixed this. You have two choices really to fix or buy your router which I'm not going to do, or you can type in on your dial pad *#0011#. Then you click your menu button, click on the wifi option, and then disable the energy saver wifi mode. That made it so my phone wouldn't drop wifi connection anymore. NOTE: each time you restart your phone you need to turn the wifi energy saver off through the command *#0011#. Hope I helped at least some of you because this bug is truly annoying.
Sent from my SGH-M919 using xda app-developers app
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That stinks. I don't have any problem and I think this is only the 2nd time I've seen anything posted like this about the S4 (the S3 did have that issue and was common). I've never turned off any energy saver and mine stays connected 100% of the time. So you're saying either that or you have to buy a new router? What kind do you have now and what settings on it did you find out that cause this issue for you?

Right now I have whatever Verizon gives fios customers. It works perfectly for all my phones, tablets, and computer. Just not on my s4 unless I do the dial pad trick. I'll post a link on the xda thread when I get home on how to fix your router. It really does make me angry that I paid 600 for the phone and it does this. Hopefully Samsung fixes this soon since they acknowledge the problem
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Btw here's Samsung acknowledging the problem.
http://www.zdnet.com/samsung-acknowledges-galaxy-s4-wi-fi-connection-problem-7000015431/
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Do you have a dlink router?
GS4

My gf has an S4 and has the same problem. We have a Netgear WNDR3500. So it's not isolated to a D-Link. She also did the dial pad trick and it seems to work for her as well. Need to find a script to run on boot to set the power save to OFF.
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