[Q] WiFi Continuous Scanning, disable possible? - Galaxy Tab Q&A, Help & Troubleshooting

Hi,
I have no problems connecting to my router via WiFi.
However, after the connection has been made, the searching for other networks does not stop. Scanning stops for about 4 seconds, after which it starts scanning again for about 8 seconds. Then after 4 seconds rest this cycle keeps repeating itself. The connection stays the same all the time, so no problem with that. But to me this seems to me an unnecessary load for the battery.
Is this normal, do other tabs have this too?
How can I stop this scanning after the connection has been made?
At my house I have 2 access points, is possible to force connect in the access point I want by default?
Thanks in advance.

The scanning is normal, because if you were to leave the realm of the first AP, then you have the option to connect to an alternate.
This is not a significant drain on the unit, as it is just listening for other channels available.

StarLog said:
The scanning is normal, because if you were to leave the realm of the first AP, then you have the option to connect to an alternate.
This is not a significant drain on the unit, as it is just listening for other channels available.
Click to expand...
Click to collapse
well something about WIFI does drain the battery significantly, at least compared with my WM phone. I can leave wifi on my Diamond on all night and it barely touches the battery, but the same action on my Overcome Gtab chews up a good 20-30% of the battery.

Thanks for the response Starlog...I was researching this same issue as I am a new gs2 owner and android convert due to the crappy 3.5 inch iphone screen. Just hate seeing that search going when I am connected to the only device I will ever use at home. Not worried about using another channel. Hate to say it but it doesn't happen with the iphone. But If you say it's inconsequential, than that is good enough for me. thanks again

I am convinced that the scanning is causing break up of music streaming. This only happens when there is scanning. I'm using a Prestigio Miracast.
I'm trying to root my Tab 4 but no luck so far.
Build: SM-T530 4.4.2 KOT49H.T530XXU1AOA1

Related

Online radio streaming on nexus stops with screen off.

Have you guys have the same problem?tryed all the radios on the market..they stream perfectly on wifi ,but when i lock the screen it just stops streaming.If i turn the screen back starts as normal.Any idea how to get over this?
No problem for me with lastFM.
This should work ... but it doesn't
Just in case you haven't tried - in the settings menu, Wireless and Networks, Wi-Fi settings, then press menu again and find 'Advanced'. Here lives 'Wi Fi sleep policy'. It looks promising, the obvious move is to set this to 'Never'.
But it doesn't solve the problem. Like you I'm finding that it is a problem with all radio streamers, some worse than others. If I turn wireless off and use 3G its fine.
Thanks for posting the issue. I thought I was the only one.
No problems with TuneWiki over WiFi and 3G...
i find that even if you set the wifi never to sleep it still does. i frequently use aftp to transfer movies and stuff to my phone over my lan, so ill set it to transfer like 3 gigs of stuff and go to bed, even though its set never to sleep the socket still gets closed at some point at night. so id say your problem lies with wifi sleeping.
also some online radios stop automatically after a certain amount of time incase you arent listening anymore to save bandwithd
Maybe its in the app settings. You didnt specify which app it was also...
This might help
When you connect Wi-Fi make sure to turn off your cellular network. N1 has this weird problem where in as soon as screen is off, it drops the wi-fi connection and goes on to cellular network.
So if you switch off ur cellular network it maintains its Wi-Fi connection even when the screen is off.
SiNJiN76 said:
Maybe its in the app settings. You didnt specify which app it was also...
Click to expand...
Click to collapse
i use mainly "AOnline radio" but i have tryed pretty much all from the market and all do the same. trying with the settings now..post if any change.
edit:yea still stops...strange try with gsm off and still same thing...is it there any solution to get over this thing?i just liten now with the screen on) eats the battery..it's ok but why not better?
The Nexus one activates some kind of energy saving mode as soon as you turn off the screen. This makes the WiFi connection very laggy, though stable for me. This is independent of the WiFi sleep policy. There's a bug report because of this for Sipdroid and I've also seen this issue while being connected to the phone via SSH. The connection is just fine as long as the screen is on, but if it's off, there's about 1 second delay.
However, I never had the problem you describe. Droidlive, for example, works just fine.
robert-qfh said:
The Nexus one activates some kind of energy saving mode as soon as you turn off the screen. This makes the WiFi connection very laggy, though stable for me. This is independent of the WiFi sleep policy. There's a bug report because of this for Sipdroid and I've also seen this issue while being connected to the phone via SSH. The connection is just fine as long as the screen is on, but if it's off, there's about 1 second delay.
However, I never had the problem you describe. Droidlive, for example, works just fine.
Click to expand...
Click to collapse
i will check droidlive myself right now...thank you for explinations..is there a way to talk with cyan and maybe he could overpass that wifi sleepy thing.
edit: also noticed if you ahve a download or something and turn the screen off goes very slow..so this problem i think really have a priority to be solved.
edit2:still stops...what would be the thing?wifi priority changed.do you have any type of settings?full app?
I'm listening to a ShoutCast stream with AOnline right now, using WiFi, screen is off. Works perfectly. Do you see this problem with other access points, too?
SLightworkaround....
If you can keep it plugged in...set the SCREEEN TO NEVER SLEEP...under settings>>>applications>>>DEVELOPMENT>>>STAY AWAKE... hope that helps!
robert-qfh said:
The Nexus one activates some kind of energy saving mode as soon as you turn off the screen. This makes the WiFi connection very laggy, though stable for me. This is independent of the WiFi sleep policy. There's a bug report because of this for Sipdroid and I've also seen this issue while being connected to the phone via SSH. The connection is just fine as long as the screen is on, but if it's off, there's about 1 second delay.
However, I never had the problem you describe. Droidlive, for example, works just fine.
Click to expand...
Click to collapse
This is the problem yes... Just try to ping your N1 while turning the screen off/on... Ping jumps up as soon as the screen is turned off...
For me Streams stop when I have a weak signal to begin with, which does not get better when turning the screen off
"KeepScreen" might help...

[Q] Slow to latch to wifi? Connect to 3g briefly before wifi.

I have a pretty stock HTC One, and I'm on a particularly sub par data plan, where each 'data session' is rounded up.
I have wifi both at home and at work, good wifi signal and am v close to router etc. I find that if I put the phone into standby and then use it again 5-10 minutes later, it is still connected to wifi, all good. If I leave it for 20-30 minutes, when I wake it, it latches onto the 3g network for a few seconds and then realises there is wifi and connects to that.
I have things like Google+, FB messenger and push mail which I presumed required a constant connection.
Any thoughts on why the wifi appears to be being turned off as it entertains deep sleep?
I can just switch data off when at home or work but I don't want to have to rely on that sort of thing, and the apps that do that for you based on GPS etc aren't that appealing either.
Look in adavanced settings under wifi. Should be able to set it to keep wifi on during sleep
Sent from my HTCONE using xda app-developers app
Thanks for the reply. Yup I have that set to always. Seems to happen both on my home and work wifi, despite great signal strength. Sometimes it seems it does happen even if the phone is unused for 5-10 minutes.
I assume this is actually pretty common and most if not all phones do this, you probably wouldn't notice unless you were tracking each connected data session.
I was thinking the phone must do something like, wake, spend x time looking for wifi while simultaneously connecting to 3g, then when wifi is found it is connected to and the 3g connection is dropped. I guess I'd be looking to delay/postpone that connecting to the 3g network for 5 seconds or so to give the wifi time to establish.
Probably nothing I can do really.
I haven't noticed any problem staying connecetd to wifi while sleeping and Ive looked at the notification bar many time before ever unlocking the phone, just to make sure wifi stayed connected as its suppose to and it does. Only see 3g when Ive set it keep wifi on during sleep to only when plugged in and I dont have it plugged in. I also have best wifi performance checked. Dont think that makes much difference though. Im also stock at the moment
Sent from my HTCONE using xda app-developers app

[Q] wifi connection problems

can anyone help me with wifi problems i am having?
my phone will connect to my home network and show connected however it seems that data does not load. I cannot load web pages often.
or when it does work it will cut out after a few minutes.
its pretty annoying as my service isnt the best in my house and if i want to watch youtube etc. wifi is obviously faster.
please help
lilk1d777 said:
can anyone help me with wifi problems i am having?
my phone will connect to my home network and show connected however it seems that data does not load. I cannot load web pages often.
or when it does work it will cut out after a few minutes.
its pretty annoying as my service isnt the best in my house and if i want to watch youtube etc. wifi is obviously faster.
please help
Click to expand...
Click to collapse
What is the rom that you use? Did you do clean flash? Did you flash any kernel? Did you try to forget the network and reconnect again? More information is needed.
Sent from my lair.
volk9029 said:
What is the rom that you use? Did you do clean flash? Did you flash any kernel? Did you try to forget the network and reconnect again? More information is needed.
Sent from my lair.
Click to expand...
Click to collapse
i'm using the stock ROM but i did unlock and root. i am using a asus RT-N56U with WPA2 personal AES encryption for security. Phone set for best wifi performance, wi-fi band on auto, keep wi-fi on during sleep.
I can connect and it will work usually especially if i turn off wifi then turn it back on. However, the problem exists that the length of time the connection will remain with the ability for loading webpages/video is unknown. It could be 2-5 minutes, but i've also tested it and its been able to hold a connection while constantly streaming a netflix movie.
I'm wondering if it could be resolved by setting my phone to connect to my home network via a static ip? seen things related to that elsewhere. It is very annoying and troublesome to have to constantly turn on/off the wifi when im sitting in the same place. I could be reading a webpage then click a link on it and then it will fail to load even though showing i am connected. Then i have to switch on and off. This has happened plenty of times within 30 minutes i've had to turn it on and off 3-4 times. To me that is not "functional".
is it something with my phone or router? or both?
lilk1d777 said:
i'm using the stock ROM but i did unlock and root. i am using a asus RT-N56U with WPA2 personal AES encryption for security. Phone set for best wifi performance, wi-fi band on auto, keep wi-fi on during sleep.
I can connect and it will work usually especially if i turn off wifi then turn it back on. However, the problem exists that the length of time the connection will remain with the ability for loading webpages/video is unknown. It could be 2-5 minutes, but i've also tested it and its been able to hold a connection while constantly streaming a netflix movie.
I'm wondering if it could be resolved by setting my phone to connect to my home network via a static ip? seen things related to that elsewhere. It is very annoying and troublesome to have to constantly turn on/off the wifi when im sitting in the same place. I could be reading a webpage then click a link on it and then it will fail to load even though showing i am connected. Then i have to switch on and off. This has happened plenty of times within 30 minutes i've had to turn it on and off 3-4 times. To me that is not "functional".
is it something with my phone or router? or both?
Click to expand...
Click to collapse
you definitely shouldnt have to connect with a static. it may help but what about when u r in public do you still have the problem?? if not then maybe u should try a new home networking device or play around with the security setting on ur router.
my wifi seems to work fine other than my speedtest results are only 3mbps up. i should be getting as much as 55, i used to get up to 40 on my gs3. i am totally stock, with the same settings.
lilk1d777 said:
i'm using the stock ROM but i did unlock and root. i am using a asus RT-N56U with WPA2 personal AES encryption for security. Phone set for best wifi performance, wi-fi band on auto, keep wi-fi on during sleep.
I can connect and it will work usually especially if i turn off wifi then turn it back on. However, the problem exists that the length of time the connection will remain with the ability for loading webpages/video is unknown. It could be 2-5 minutes, but i've also tested it and its been able to hold a connection while constantly streaming a netflix movie.
I'm wondering if it could be resolved by setting my phone to connect to my home network via a static ip? seen things related to that elsewhere. It is very annoying and troublesome to have to constantly turn on/off the wifi when im sitting in the same place. I could be reading a webpage then click a link on it and then it will fail to load even though showing i am connected. Then i have to switch on and off. This has happened plenty of times within 30 minutes i've had to turn it on and off 3-4 times. To me that is not "functional".
is it something with my phone or router? or both?
Click to expand...
Click to collapse
Do you have sleep mode turned on, in settings, power? Or power saver?
Sent from my lair.
Maybe try unplugging both your modem and router for 10 seconds and then plug them back in.
Sent from my HTCONE using xda app-developers app

Dead Wi-Fi connection after sleep

I'm on university wi-fi. I think it's 802.1x, requiring username/domain and password. Which kinda sucks cause Chromecast doesn't work. But anyway, just about every time I turn the screen on, the wi-fi appears connected, but YouTube and facebook just give loading spinners and I think eventually time out. I have to switch the wi-fi off and on again to get the wi-fi to actually work properly. I don't have the same problem with my laptop, so I'm thinking it's a problem with my Note 3. I'm using rooted NB4 if that makes a difference. Any ideas?

Galaxy Tab S2 5g wifi troubles

Hi, is this the spot to ask about problems with the stock tablet? If not, I'm sorry. If, so please help!
So, I got a tab s2 for christmas. So far I'm loving it, except it will not stay connected to 5g wireless for long! Sometimes it will kick me out every half hour or so of continuous usage, other times it will kick me every 5 minutes. The connectivity problem seemed at first like I just had to adjust something with my network except that any other device that uses the 5g signal does not have that problem! ALSO, sometimes when it hangs it completely freezes the tablet and I have to do a hard reboot (power and vol down buttons) to make it usable again.
At one point I was in the wifi settings page and saw the wifi toggle go grey. It NEVER reconnected after 3 or 4 reboots! Is there something wrong with this particular tablet or is this some sort software issue?
My router is a netgear r6250 fwiw.
Try changing channels on the router, you may have interference on the channels it's using
You can use InSSider to check for channel congestion.
ashyx said:
Try changing channels on the router, you may have interference on the channels it's using
You can use InSSider to check for channel congestion.
Click to expand...
Click to collapse
I have been using Netgear Wifi Analytics to figure out my wifi dropping. I have no trouble with signal in the house...None of my other wifi devices are having trouble! As a matter of fact, just a little while ago, while testing the wifi on the tablet, the signal dropped. I pressed the home button then the whole tablet froze again. Instead of hard rebooting it, I decided to leave it alone to try to get it to unfreeze on its own. It did after about a minute...BUT the area near the volume and power buttons are was pretty warm/hot. The battery also lost nearly 8% in that time as well!
Does this particular one I have just simply have a bad wifi switch/modem/antenna?
I have the same issue. SM-T810 keeps dropping wifi connection to my netgear r7000. Both 2g and 5g. None of my other devices have the issue. Seems to occur a lot with chrome or anything else that saturates the wifi link.
I'd suggest getting the tablet replaced. I've disabled the 2.4GHz mode on two of my routers (ASUS AC66U and ASUS TM-AC1900) and my Tab S2 never had any troubles with 5GHz on these routers.
Anyway, no matter what obscure configuration your router might have, it shouldn't cause the whole device to freeze. Unless Samsung seriously screwed something up, even if the wifi driver crashed (in the worst case), the worst that would happen is that Android won't let you turn on the wifi.
I replaced mine yesterday and the new one is just fine!
I called the Samsung help line, described the symptoms and they said it sounded like a hardware fault rather than a software issue - took my reference number back to place of purchase and swapped it over for a new one. The new one has had zero issues, has not disconnected from wireless once or frozen and even just general browsing seems smoother - the first one definitely had some issue with the wifi bit.
This without even rebooting the R7000 router between the last bout of freezing and disconnections with the old tablet this morning and then starting to download all my apps and settings and wireless sync of 2 gig of data for the new tablet without a single hiccup two hours later. So the router or signal are not the issue.
MadFinn said:
I called the Samsung help line, described the symptoms and they said it sounded like a hardware fault rather than a software issue - took my reference number back to place of purchase and swapped it over for a new one. The new one has had zero issues, has not disconnected from wireless once or frozen and even just general browsing seems smoother - the first one definitely had some issue with the wifi bit.
This without even rebooting the R7000 router between the last bout of freezing and disconnections with the old tablet this morning and then starting to download all my apps and settings and wireless sync of 2 gig of data for the new tablet without a single hiccup two hours later. So the router or signal are not the issue.
Click to expand...
Click to collapse
It sucks, but I'm glad I'm not the only one that had issues!

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