Another Wifi Problem P6210 (SOLVED) - Samsung Galaxy Tab Plus

Two days ago, my device suddenly could not connect to any wifi anywhere, encrypted or not, WEP nor WPA. This began to happen after I did a backup though CWM.
It sees networks but continuously runs through a scanning, connect, disconnect, scanning cycle. It tries to set the IP from the network, but then flashes unsuccessful and starts scanning again and repeats the process, and in the list of available networks, all available networks cycle between being not in range, remembered or disabled.
Sometimes wifi networks are greyed out, sometimes, not. Sometimes it cannot even find my router, even if I place the Tab on top of it. It connects once in a while, randomly, but only holds the connection for a few minutes.
I have other wifi tablets and all can connect to my wifi, nothing has changed with my wifi settings, router, etc. But to make sure, I did cycle the modem and router on and off and even reset the Airport Extreme that I use to factory settings. Modem is new and Airport Extreme is only a couple of months old.
My Tab is rooted and running stock HC. Never been dropped, great condition, never exposed to shocks, water, etc.
I have tried the following fixes:
Restored to factory settings, wipe data, etc. Nothing. I have tried this several times.
I have tried setting a static IP address. Nope.
ODINed it back to stock using P6210XARKL1_P6210UEKL1_HOME.tar.md5. It briefly connects to wifi long enough to apply the update and after that, it starts cycling scanning, connecting, disconnecting, etc. Tried this several times as well.
I even tried the update to the UK ICS for the P6210 and have the same problem. It sees wifi, but cannot connect, and on occasion it cannot see any wifi at all, even when I am 2 feet away from the router.
At this point I am convinced that it is a hardware issue (either that or it is pouting because there is a new Nexus 7 in the house)
Anyone have any other suggestions for a fix?

Update:
I did another hard reset from within Settings-->Storage--> Factory Data Reset, rather than through recovery (either stock recovery or CWM) as I had done before.
Now, wifi connects a little more consistently. Would resetting that way actually make a difference? Or is this just a random thing? Am I trying to see a logic where none exists?
How would a hard reset through the system settings be any different than one through recovery? Or, does each reset clear something else that got corrupted along the way?
My wifi still randomly cycles through scanning, connecting, disconnected, just as before. However, now the connection is actually made more quickly (under a minute when before it could take up to 15 minutes - or just never connect) and seems to remain connected for longer periods of time now.

Well, after searching and reading through 100s of similar issues one of the workarounds is to use a wifi widget or a WiFi Fixer App.
I am using a widget to control wifi and it along with any other random thing I might try can occasionally make my Tab connect to my Wifi network.

VitaZora said:
Two days ago, my device suddenly could not connect to any wifi anywhere, encrypted or not, WEP nor WPA. This began to happen after I did a backup though CWM.
It sees networks but continuously runs through a scanning, connect, disconnect, scanning cycle. It tries to set the IP from the network, but then flashes unsuccessful and starts scanning again and repeats the process, and in the list of available networks, all available networks cycle between being not in range, remembered or disabled.
Sometimes wifi networks are greyed out, sometimes, not. Sometimes it cannot even find my router, even if I place the Tab on top of it. It connects once in a while, randomly, but only holds the connection for a few minutes.
Click to expand...
Click to collapse
VitaZora said:
Well, after searching and reading through 100s of similar issues one of the workarounds is to use a wifi widget or a WiFi Fixer App.
I am using a widget to control wifi and it along with any other random thing I might try can occasionally make my Tab connect to my Wifi network.
Click to expand...
Click to collapse
Persistence = Profit.
I think I have finally solved the broken wifi issue. Just to recap, the problem started after I did a backup with garyd9's CWM http://forum.xda-developers.com/showthread.php?t=1379532.
And as a last ditch effort I even tried toggling the wifi on/off with a widget as was suggested from other sources (Google is your friend), in addition to factory restores, or restoring from a CWM backup, etc. And that was not a reliable solution after all.
These are the steps I took.
Through stock recovery, I wiped data and cache, and did a factory restore, twice.
I ODINed back to stock, again.
Wiped data and cache and did a factory restore.
Wifi was still sluggish to connect, but finally I was able to load the update.
Then I wiped data and cache and did a factory restore again.
It has been 24 hours and I still have a strong wifi connection. If I power my Tab off and wait an hour or two, then reboot it connects immediately to wifi. If I toggle wifi on/off it still makes an immediate connection. YAY!
So, it seems that something got corrupted during the initial CWM backup and then persisted through many wipes and reinstalls.
UPDATE:
Still have working wifi!

I'm having the same problem now. I'm using latest CM9.
I was using Google Chrome just fine when suddenly Wifi disconnected for no apparent reason and it's now showing the same symptoms you described in the first post. I have formatted cache and cleared dalvik cache and it didn't work. Wiped everything and it didn't work. Reflashed CM9 and tried two different Wifi fix flashable ZIPs but I still got the problem. I'm wiping everything and reflashing CM9 once again.
Is someone else experiencing this?
I'm afraid to data wipe in stock recovery due to the brick bug reported (my tab uses one of the defective chips).
How is your Wifi holding up, VitaZora?
I hope persistance pays off.

rickmiraldo said:
I'm having the same problem now. I'm using latest CM9.
I was using Google Chrome just fine when suddenly Wifi disconnected for no apparent reason and it's now showing the same symptoms you described in the first post. I have formatted cache and cleared dalvik cache and it didn't work. Wiped everything and it didn't work. Reflashed CM9 and tried two different Wifi fix flashable ZIPs but I still got the problem. I'm wiping everything and reflashing CM9 once again.
Is someone else experiencing this?
I'm afraid to data wipe in stock recovery due to the brick bug reported (my tab uses one of the defective chips).
How is your Wifi holding up, VitaZora?
I hope persistance pays off.
Click to expand...
Click to collapse
My Tab also has the defective chip, but I didn't know that until AFTER I went through all those wipes and reinstalls.
But I can report that all is well and wifi is still working like a charm.

VitaZora said:
My Tab also has the defective chip, but I didn't know that until AFTER I went through all those wipes and reinstalls.
But I can report that all is well and wifi is still working like a charm.
Click to expand...
Click to collapse
Ohhh I see...
I did wipe in HC stock recovery several times, but not in ICS stock recovery.
Have you wiped in ICS stock recovery? By selecting "Factory default" option from config menu or by manually going to recovery and selecting data wipe? Or both? Hahaha
Thank you for the reply!

rickmiraldo said:
Ohhh I see...
I did wipe in HC stock recovery several times, but not in ICS stock recovery.
Have you wiped in ICS stock recovery? By selecting "Factory default" option from config menu or by manually going to recovery and selecting data wipe? Or both? Hahaha
Thank you for the reply!
Click to expand...
Click to collapse
Honestly, I can't remember. I know I flashed ICS twice as well as the CM9 version for our Tab.
I think the order for flashing from rooted HC was the following:
ICS, CM9, HC, HC, HC, ICS, HC.
In between each was either factory restore from the config menu or through recovery. Occasionally after flashing my device back to stock, it would go into a reboot loop and the only way to fix that was to enter recovery and wipe everything. But I reflashed so many times and tried wiping and factory restores multiple times as well, that I may have wiped ICS through recovery - in fact I am sure I did at least once.
Oh well, I guess I live dangerously.

rickmiraldo said:
Ohhh I see...
I did wipe in HC stock recovery several times, but not in ICS stock recovery.
Have you wiped in ICS stock recovery? By selecting "Factory default" option from config menu or by manually going to recovery and selecting data wipe? Or both? Hahaha
Thank you for the reply!
Click to expand...
Click to collapse
Carefull! ICS stock recovery may brick you're tab. See this thread

Related

WiFi troubles...

I installed CM 10.1 on a fresh storage (everything wiped. top to bottom) and everything is awesome so far until recently. I primarily use data but sometimes wifi for like netflix and stuff. I switched on wifi and watch for a while and am ready to go on to data and it says its on but I get no internet. WHA?? I have full LTE bars. I tested and every time I turned wifi on and off my data is shot. I tried going into recovery and wiping both caches and that'll temp fix it but as soon as I connect to wifi its done again.
Any known ways to fix this? Getting pretty iritating to go in, wipe, boot, every time I need data...

Wifi disconnect

Recently I have been experiencing Wifi disconnects every 2-3 hours. I have tried Wifi settings by clicking on connect, tried choosing forget and resiging in and tried the app Wifi fix but all the app tells me is it is "completed" but it is not. The only way I can get it back is to reboot but then it only fixes it for a couple hours. I thought it might somehow be connected to the rom (CROMI-X 5.2.4) though it has never happened with any rom before. So, I reinstalled a older rom (CROMIX 4.7.0) which was always stable for me in the past but it started doing the samething.
lartomar2002 said:
Recently I have been experiencing Wifi disconnects every 2-3 hours. I have tried Wifi settings by clicking on connect, tried choosing forget and resiging in and tried the app Wifi fix but all the app tells me is it is "completed" but it is not. The only way I can get it back is to reboot but then it only fixes it for a couple hours. I thought it might somehow be connected to the rom (CROMI-X 5.2.4) though it has never happened with any rom before. So, I reinstalled a older rom (CROMIX 4.7.0) which was always stable for me in the past but it started doing the samething.
Click to expand...
Click to collapse
Go into setting/wifi/advanced In there make sure you WiFi region is set to your area... Try unchecking some or all of the optimization for the wifi... See if that helps, let me know.. As always thx lj
The only thing I have checked in Advanced Wifi is Notifications Wifi on during sleep is set to never. As for right region I.m not sure what you mean, my mac and ip address' are correct.
Check your router as well. In my experience routers cause a lot more wifi problems than people realise.
It's worth rebooting them every now and then. Also download wifi analyzer and make sure you aren't on a channel with a lot of neighbours.
DIdn't you have a NetGear router? The latest firmware was known to cause issues. Did you downgrade it?
I rebooted my router and I moved to another channel, so now I will wait and see. What I do not understand is when I lose wifi on the Asus I will ask my wife to check the wifi connection on her tablet and hers is fine?
Well guys, I did everything you suggested and it is still doing it. I am now running 5.3a. Has anyone everheard of the wifi just suddely breaking on the Asus? The reason I ask is that even though I broke my Asus warranty I do have a square trade warranty.
lartomar2002 said:
Well guys, I did everything you suggested and it is still doing it. I am now running 5.3a. Has anyone everheard of the wifi just suddely breaking on the Asus? The reason I ask is that even though I broke my Asus warranty I do have a square trade warranty.
Click to expand...
Click to collapse
Try flashing back to pure stock from Asus or a clean install at least.
When doing a clean install but I want to save whats on my internal card can I just move /sdcard to my pc before I do a full wipe or should I move other stuff also? What do you suggest?
lartomar2002 said:
When doing a clean install but I want to save whats on my internal card can I just move /sdcard to my pc before I do a full wipe or should I move other stuff also? What do you suggest?
Click to expand...
Click to collapse
If you just wipe from TWRP it only wipes you apps and data. You won't lose any media stuff so pictures, music, videos etc will stay. You should do a titanium back up if you want to restore apps and data.
If you choose format you will lose all so yes you would need to backup to either your PC or external SD. But you don't need to format to do a wipe.
Did a clean install and now wifi no longer stops.
I am having another problem, playstore apps updates or new apps do not seem to ever finish d/ling, the blue line just keeps running forever. I have tried stopping and restarting but that does not seem to do anything.
Should I post this as a new question?
lartomar2002 said:
Did a clean install and now wifi no longer stops.
I am having another problem, playstore apps updates or new apps do not seem to ever finish d/ling, the blue line just keeps running forever. I have tried stopping and restarting but that does not seem to do anything.
Should I post this as a new question?
Click to expand...
Click to collapse
Try clearing cache and data in the Playstore app in Settings > Apps

Wifi enabling impossible after Android L installation

Hi guys...
after installing the android L developer preview on my Nexus 5 i can't activate the wifi anymore...
back to stock...... unlock.... wipe dalvik and cache..... no luck....
the wifi don't work anymore.... stuck on wifi activation..........
Please help me.... i don't know what to try.....
thank you
I have the exact same problem. VERY frustrating. No idea what happened.
[Q] Stuck on WiFi Turning on
Hello,
I've seen this issue with various phones and various fixes... But I don't want to Hi-Jack anyone or anything. Anyway, I tried the dev build of "L" at one point... and my WiFi randomly stopped working. I thought "welp, it's a dev build... not gonna sweat it" and went back to stock 4.4.4... flashed back to factory, no dice. It seemed to turn on long enough during the setup process to "connect" but it disappeared when I rebooted to go to ART. Thought, welp, no experimental anything. Flashed back to factory, no WiFi. Not even during setup. Tried the various things I've seen around... obviously various factory resets, tried rooting and renaming wpa_supplicant.conf, flashed paranoid android because someone said that's the only thing that worked... it didn't. I do notice the kernel seems to be the same for PA and 4.4.4, so I could try another kernel, but have no idea which to try. After I put TWRP on, I cleared every cache, etc I could. Flashed back to stock after clearing system and no dice, tried running wifi fixer, tried installing macman... nothing. I did see someone say if the phone gets too hot, the WiFi chipset can come off, but the WiFi chip-set is the same as Bluetooth, and that's having no problems. I appreciate any suggestions, I really want this to work out. Otherwise I have a year with a phone with no WiFi... To kind of clarify (re-reading, I see I wasn't too clear about the actual problem), the WiFi toggle switch is set to "Off" and where your networks would display it shows "Turning on WiFi". This isn't just one network acting up, and this has been going on for a couple of weeks.
Edited to add: when I unlocked the bootloader today, the setup process showed me my networks but settings froze when I put the password in... so the hardware seems to be connected...
Please continue any discussions in the existing thread HERE
Thread Closed.

[Q] WIFI needs two full ON/OFF-Cycles to function properly

Hello,
For the past two weeks my phones WIFI (LG-P880 with CM11-nightly) needs two full ON/OFF-Cycles to function properly.
For example:
1. I turn WIFI off in the morning when I leave for work.
2. Then I turn it back on at night, when I get back home.
3. It "seems" to scan for available networks, but it doesn't seem to find any.
4. THEN I turn it off again and on again and suddendly it shows all available networks and reconnects to my preferred one as it should.
I already did a full factory reset via CWM, including wiping cache and so on; didn't fix the problem.
Any suggestions?
Thanks in advance.
kerp said:
Hello,
For the past two weeks my phones WIFI (LG-P880 with CM11-nightly) needs two full ON/OFF-Cycles to function properly.
For example:
1. I turn WIFI off in the morning when I leave for work.
2. Then I turn it back on at night, when I get back home.
3. It "seems" to scan for available networks, but it doesn't seem to find any.
4. THEN I turn it off again and on again and suddendly it shows all available networks and reconnects to my preferred one as it should.
I already did a full factory reset via CWM, including wiping cache and so on; didn't fix the problem.
Any suggestions?
Thanks in advance.
Click to expand...
Click to collapse
if it is a problem with the rom, which is very likely, the only option is to try another rom or put stock back on.

Lost LTE and internet access on some Wi-Fi networks after flashing Cyanogenmod

This is the first help post for anything tech-related that I've ever posted- I'm usually good enough with Google to fix my own problems, but this one has me flustered.
Until yesterday I was running DigitalHigh's GPE ROM but decided to give Cyanogenmod another try after some persistent lag issues. Everything went fine during the install until I noticed that I was stuck on 3G no matter what I did- airplane mode, reboot, clear the cache, try to update APN settings, etc., nothing helped. Additionally, while the phone will connect to my home wireless network, it has a ! next to the connection symbol despite my being able to use the network with my laptop. The funny thing is, this only happens with some networks. Neither my home network nor the network at work will give me internet access, but if I plug an ethernet cable into my laptop and create an access point that way, I'm fine.
Here's what I've tried so far after scouring these and other forums:
-Reverted back to the previous ROM
-Flashed new firmware
-Flashed two new kernels
-Tried every different APN setting I can think of
-Popped out my sim card, waited a bit, and popped it back in
-Rebooted countless times
-Cleared every cache I can think of
-updated TWRP
There's probably more that I can't think of off the top of my head as well. Does anybody have any idea what on earth has happened to my phone?
LowlifePiano said:
This is the first help post for anything tech-related that I've ever posted- I'm usually good enough with Google to fix my own problems, but this one has me flustered.
Until yesterday I was running DigitalHigh's GPE ROM but decided to give Cyanogenmod another try after some persistent lag issues. Everything went fine during the install until I noticed that I was stuck on 3G no matter what I did- airplane mode, reboot, clear the cache, try to update APN settings, etc., nothing helped. Additionally, while the phone will connect to my home wireless network, it has a ! next to the connection symbol despite my being able to use the network with my laptop. The funny thing is, this only happens with some networks. Neither my home network nor the network at work will give me internet access, but if I plug an ethernet cable into my laptop and create an access point that way, I'm fine.
Here's what I've tried so far after scouring these and other forums:
-Reverted back to the previous ROM
-Flashed new firmware
-Flashed two new kernels
-Tried every different APN setting I can think of
-Popped out my sim card, waited a bit, and popped it back in
-Rebooted countless times
-Cleared every cache I can think of
-updated TWRP
There's probably more that I can't think of off the top of my head as well. Does anybody have any idea what on earth has happened to my phone?
Click to expand...
Click to collapse
I don't see factory reset using stock recovery (not twrp)
Sent from my Nexus 6 using Tapatalk

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