Galaxy Tab Pro 8,4'' [SM-T320] - WLAN flapping issue - Galaxy Tab Pro 12.2, 10.1, 8.4 Q&A, Help & Trouble

Hey guys,
FIrst of all: Thanks for maybe helping me.
So my problem is that I have a really annoying WiFi issue with my Galaxy Tab Pro. I installed a cm13 build (Link in that style because I am not allowed to share links...)
Code:
download[B]DOT[/B]cyanogenmod[B]DOT[/B]org/?device=mondrianwifi
a month ago and have one big problem with it. Whenever I want to use WLAN to connect to the internet (or use it on my local network, whatever) it just keeps flapping. It turns on and off and on and off and so on. I thought that it would be related to my home network at first (so that it doesn't get a IP or something like that), but after I checked my DHCP and general network settings and came to the conclusion that it can't be related to that. All other devices in my network are able to get a IP (and go online). When I turn on the WiFi on the tablet and check the network settings I see that it gets a IP but looses it after 1-2 secs. The thing which makes absolute no sense to me is that after a while (turning WiFi off and on again, 3-4 times) it often is able to get and keep a IP address. After that everything works fine - often for 1-2 hours until it looses the IP again and I have to begin with the game of randomness. I checked in the known bugs and could not finde that issue listet there. So I think it is maybe not related to the cm13 build I am using..? Or not even to the device? I don't know. Maybe you can help me - would be helpful enough if someone could tell me which logs I have to check when having a WiFi issue. I am quite new to such problems and don't know how I should start the troubleshooting.
So thanks in advance and greetings,
Maik

Related

no connection to internet through wifi

hi ppl
i installed bepe's 0.73 rom (great work!!) to my trinity.
connection to my home wifi network works w/o problems. i get an ip-address, gateway address and dns-server (with the correct values of course ).
my problem is: i can't even ping the gateway (therefore of course also no browsing the web). under "einstellungen - netzwerkkarten", the wifi-adapter's setting is "internet" (and not work).
so any ideas how to solve that? any more info you would need for debugging?
thanks in advance, ize|man
so let me change my question: is there NOONE out there who has ever got problems with wifi? does anyone have a link to a trouble shooting faq?
pls .... i spent over 5 hours no without any solution
thanks ize|man
Hi.
I used to have that kind of issue with the wifi and most of the time I had to wait and wait for the wifi to get hooked up to the router,and like I said it was WAIT.
Everything seemed to be perfect,open wifi,WEP,WPA TKIP/AES,this used to happen with the first and second rom from HTC.So what I did was take a look at the router´s firmware and get and update,I also updated the rom of the phone and started with the cooked roms.
Waht you can do is,restart/reset the wifi ap or router it helps,make sure there´s no MAC filter,though it should work with the default settings.
I hope I can help you.
@dta1974
thanks for the help. i change from wpa to wpa2 and i worked. don't ask me why. my laptop did work with wpa w/o any problems.
so: problem solved
I have a similar problem but in my case it seems to be the power saving options for wifi. Have to turn em off completely to get it to work at all even though signal strength is 100%. Tried all types of encryption but same problem.
Heyy Solved my prblem too
I had the same problem (got ip from AP, but couldn't ping the device, nor navigate, etc).
Solved changing the power save mode !

[Q] [observation & Q] ER3BUS XL3.6 possible Mobile Network issue

Hi everybody,
upgraded to ER3BUS XL3.6 and had a great experience so far. However, there is one observation I have so far, and may not be the ROM at all, just wondering if somebody else came across it.
Occasionally, while having 5 bars reception the mobile network does not seem to work. Sometimes it indicates 'G' (GPRS only I believe) so I expect slow network, but it does not seem to work at all. Other times there is no mobile network indicator, so I though the carrier had an issue, however restarting the phone seems to fix it, ie the indicator shows G/E/3G after the restart, same location at my desk at work. This leads me to believe, that something in the phone/ROM stops.
As I said, just a suspicion, no proof, don't know where to look to find out. Does not happen all that often (once/twice a day).
Any suggestion in where to find relevant log files to look through AND WHAT to look for appreciated. I am a WINDOWS man (there, I have said it ), trying to get into Android .
Thanks
KORE

[Q] Wi-Fi 802.11n doesn't work with a Russian sim card, is there a fix?

Hello. I've poked, googled and searched around trying to find a way to fix this annoying issue.
Long story short: till 2004-2005 Wi-Fi N bands weren't legalized for civilian use in Russia. Now they are and we here still sometimes receive such devices which block usage of those bands. I've faced the same idiocy with Xperia S.
GB worked with channels 1-11 of Wi-Fi N (yet 12-13 should have been available too since Russia != US). Still it was bearable. ICS was the same (I've inquired about this issue a couple of times on the official forum to no avail).
Here the long-awaited JB update comes up (hooray) and bam - Wi-Fi N is blocked. Now if I pull out the sim card and turn on my phone - it will successfully connect to Wi-Fi N network. If I put it in and reboot the phone - the phone will connect to the N network for the first few seconds and then - as soon as it initializes the sim card - it will drop the connection. If I don't enable 'G/N mixed mode' on my home router, it will be sitting with no connection and showing me that N network but it would not connect to it.
Now as I told before I've been searching around internetz and was able to find some lose ends and few possible fixes to this issue.
1. Region code change. Doesn't work. It did before when the phone wasn't able to connect to channels 12-13. But now when N doesn't work at all this fix doesn't help. It looks like the problem lies deeper now.
2. Messing with wpa_supplicant. Works... sorta. I've replaced stock wpa_supplicant file with this one: http://forum.xda-developers.com/showthread.php?t=2399391 . It kinda works after that but starts acting up further down the line. E.g. it connects to a N network and everything's cool and dandy BUT when I leave my home and wake up the phone somewhere else I see that it still thinks it's being connected to my home network. It sees the other networks around it at the moment but it doesn't want to choose them as it kinda connected to my home one. Which is nowhere near. And if I get back to my home with the phone in such state - it won't continue to exchange data over my Wi-Fi network. So to fix that I have to turn wi-fi off and then on again but I don't like such a behavior since in my town there are a lot of free wi-fi hot spots around (in public transport, at bus stations, in cafes, etc) and I'd like my phone to choose and connect to open hot spots automatically.
So could someone please shed some light on how all this restricting thing works, what mechanism is responsible for available Wi-Fi modes except region code field in the databases and how do I fix that? (or break it?). I mean the second fix is almost works but it looks like wpa_supplicant wasn't hacked properly. Maybe there are other wpa_supplicant files available?
Thank you!
Edit: forgot to mention that I'm talking here about Xperia S, firmware versions are: JB .200, .211, .96
The same problem with my xperia ION from Syria , i try many APPS to change region code but no luck , and then change wpa_supplicant file but i face same your problem and i am suffering of about this problem , and i already change my rom from 211 to 96 and the problem still .
ahmedalmulki said:
The same problem with my xperia ION from Syria , i try many APPS to change region code but no luck , and then change wpa_supplicant file but i face same your problem and i am suffering of about this problem , and i already change my rom from 211 to 96 and the problem still .
Click to expand...
Click to collapse
Yea, I saw few people here from Syria and from some other African countries also and they all had similar problem. Although I didn't know anything about legal status of Wi-Fi N bands in Syria so I've decided to create a new topic.
It looks like this problem is quite wide-spread and before Sony officially acknowledges it, I hope we'll get some help from devs around here. I wonder if the devs actually look through troubleshooting branch of forum. Something tells me they don't.
I mean if there are fixes available it shouldn't be too hard to modify something in the system to get that damn thing working. This wpa_supplicant fix is especially interesting but I can't find any tutorial on how to edit it. Google keeps silence.
Did you find any solution for this problem , because I try many article but no luck .
ahmedalmulki said:
Did you find any solution for this problem , because I try many article but no luck .
Click to expand...
Click to collapse
No man, still nothing. I've put my hopes on Sony, thought they will update. Looks like I was wrong

WIFI Authentication Issues

Hello,
I'm a happy G3 owner, D855, 3Gb/32GB International version. I rooted using IOroot successfully and have done 2 OTA updates since then, currently on 10g, root still on.
I'm having major issues when trying to connect to WIFI routers in cafes/restaurants/hotels, public places in general, whereas my wife's phone and my smartwatch (believe it or not, with its mini antenna in the wrist bands (Omate Truesmart)) connects from the first try.
On the G3, I get "Authentication error" almost always, but it is working properly at my home, my parents house etc.. Only in public places or rather in places where there are a lot of people connected usually.
Does anybody have an idea what to do to solve this issue?
Many thanks for any help/tips
Chris
I do not have same issue but very simillar. Everytime wanna connect to public wifi LG G3 Android 5.0 show up screen with "login into network". Nothing more. Web browser won´t open page with login name and password even own web browser is not openning anyway. It works before Lollipop arrived...
I have the same problem, do you solve it?
You could disable "Show passwords" (Settings / Security) and try again. For some people this appears to work :good:

[Q] How to connect to hidden WiFi?

Hello xda community!
I have a strange and serious problem: I can't connect to hidden WiFi's.
I'm with a LG G3 D855 10H (no newer versions available).
At work we use a hidden WiFi without password but with Juniper VPN.
When I type in the network name and save it, it tries one time to connect, then my LG G3 shows "not in range". After a few seconds, the WiFi is on the top again with a very good signal.
When I try to connect again, it shows "not in range" again and so on.
I tried it at home and created a hidden network and it was reproducible.
Anyone else has problem with this?
Many thanks in advance for your help!
Best regards,
Jake
Jake2kOne said:
Hello xda community!
I have a strange and serious problem: I can't connect to hidden WiFi's.
I'm with a LG G3 D855 10H (no newer versions available).
At work we use a hidden WiFi without password but with Juniper VPN.
When I type in the network name and save it, it tries one time to connect, then my LG G3 shows "not in range". After a few seconds, the WiFi is on the top again with a very good signal.
When I try to connect again, it shows "not in range" again and so on.
I tried it at home and created a hidden network and it was reproducible.
Anyone else has problem with this?
Many thanks in advance for your help!
Best regards,
Jake
Click to expand...
Click to collapse
I've got the same problem.
My problem was resolved
rayan96 said:
I've got the same problem.
My problem was resolved
Click to expand...
Click to collapse
Now that is what you call a 'special' post!
Would you care to explain how it was resolved for the people that have the problem.
My problem still exists, but isn't urgent anymore.
I found out, Android itself have problems (or restrictions?) to hidden WiFi networks.
I also found an app names HiddenSSID Enabler, but it seems it didn't work for me (or G3?).
If someone has a solution it still would be very helpful fo rme and the rest of the community.
// Jake
I have logs posted in my first post, WIFI DESTROYED TWICE or there abouts.
I've had to resort to DATA and its killing me haha i think i am getting close to fixing it, well i think i may be closer than you two and can one of you kindly take the lead as im reinstalling windows and i haven't gamed in 6 days :|
/system/etc/wifi/WCNSS_qcomcfg.ini
then the problem is complex but i am sure it is something to do with gEnableApProt=1
Offshoot fix, reinstall using googled imei number that doesn't have a flag or some how fix the flag <READ A FEW DAYS BACK>
I think actually the program that stuffed me was Airmon by maxters. It asked me if i was pro and of course, i said yes. Who would simply click no? I know a ninj wouldn't click no. I think there is a manual reinstall to link to it again i find the modem in its own partition having a chill, most likely trojan/backdoor and pwning everything around me.. I had three encrypted vpn backdoors and escalated accounts on my computer I paid the 5$ for the binarys, i think i paid 5$ for the back doors.
Not to sell Airmon out though.. Rooting our phones and accessing countless forums and websites really does leave us rather "xposed" some other cuplrits may be dsploit, ROM manager, linux Deploy/kali, Pamn IP scanner, system app remover pro, busybox pro's (Stephen/JRummy) or CMinstall/accessing the forums and trying to install cynagenmod / twrp recovery. I'm probably going to go with..... Airmon/Linuxdeploy or uninstalltool. But may have just been my IP logged and i hit a booby trap script along the way.
You guys done anything of the sort?
/Thread killller
Neither I understand what you are talking about, nor am I (as not native english speaker) good at "sentence guessing".
I have a rooted phone - of course.
But I'm pretty sure my WiFi is not destroyed...

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