Galaxy Tab keeps rebooting when turning on wifi - Galaxy Tab Q&A, Help & Troubleshooting

Anyone out there with this issue? I have multiple wifi network profiles on my Tab for Home (2) and at Work (1). Out of these 3 profiles , 1 profile from home (wpa) and the other from work (802.1x EAP) will reboot the GT each time i turn on the wifi. The only way to stop this from happening is to remove these profiles. Not very productive but thats the only way to get rid of the booting. Anyone facing this issue ?
Sent from my GT-P1000 using XDA App

It just happened to me too. Got the Android panic screen.

Mine just reboots wo any panic icon

Re-flash with the latest firmware.

Dear zyborg, i am a complete noob in this area coming from the WM platform. Can u point me to the link on how to flash a GT rom? B4 i take the step to do that , i would like to try hard resetting first...which will totally remove the rooting and not just the privacy - return to factory default? Is there such a thing like that for android devices? TQ in advance

Reflashed at Samsung centre. Issue stil there.
Sent from my GT-P1000 using XDA App

Take it back as it sounds defective..

I have the same problem. Did you get it solved or is it a hardware error?

I couldnt prove it to Samsung when i was at the sevice centre because the reboot didnt hapen at their wifi router. I came to a conclusion that the problem only arises on certain profiles and certain wifi routers. Compatibility issues? So far my dlink router and corporate router, cisco is giving me this issue. I had another 7 inch tablet, CSL and i never faced such issues with the same settings
Sent from my GT-P1000 using XDA App

I found out that the reboot does not occur when i only have one wlan profile configured.
So i think it is an softwarebug. Do you agree?
Thanks!

Yes. I agree. Looks like its only u and me for the time being. Btw my rom is dxjj1. What is yours?
Sent from my GT-P1000 using XDA App

Pda and phone:
XXJID
CSC:
XAJID
As i have baught my tab at Amazon, i have the possibility to change it on warranty for a new one. Maybe i will do this on next weekend.
I will keep you informed about my encounters.

Thanks lulatsch99. Would really like to know the outcome from yr side. Tomorrow i am getting a help from samsung tech guy to meet me at my office to test out his tab. Will try to simulate the same profiles to see if his machine boots too.
Sent from my GT-P1000 using XDA App

Hi,
today i got my brand new exange tab from Amazon. I tested it without installing any Apps.
The same reboot problem appeared. As soon as i had configured more than 1 wlan profile, the tab rebooted after switching off and on wlan. The same happens when i activate and deactivate the Offline modus.
This even happened when i had one profile for real and one dummy profile configured. After the reboot the wireless lan connection works fine until switching off and on wlan.
Both profiles i configured with wpa2 psk.
Now i really think this is a software/driver bug. Most of the tab users seam to have only one wlan profile, otherwise more people would have this problem.
Oh, i also contacted the german Samsung support. They never heard of this problem.
Please let me now if you got better results with or from the tech guy.

The tech guy from Samsung couldnt make it. Next schedule is next week. I am not too hopeful now since ur scenarrio proved its not hw related. Maybe Samsung in Germany and Malaysia should talk to each other. Thats provided the log down our issues in the database. Will update you once i get to test their units. I also tested that this problem will exist if one profile is on wpa while the other is on 802.x
Sent from my GT-P1000 using XDA App

I have the same issue. The tab also reboot eventhough I have only 1 wifi profile configured. I try "factory default" several times but issue still exist even no any app installed at all.
my version is also P1000DXJJ1.
After phone consult with local Samsung call center, they have never seen this problem.

P7570 said:
I have the same issue. The tab also reboot eventhough I have only 1 wifi profile configured. I try "factory default" several times but issue still exist even no any app installed at all.
my version is also P1000DXJJ1.
After phone consult with local Samsung call center, they have never seen this problem.
Click to expand...
Click to collapse
Either Samsung is trying to cover up till the next major update or not enough ppl is having this problem to make it a major issue. May I know which country you are from ? I am from Malaysia. If we at the same location, then maybe we can go there together and make a point.

Ii finally met up with the Samsung tech guy today. Same issue with his TAB. So I guess its a bug with the software. He will feedback to Samsung and I guess all we can do is wait till the next official ROM to see if they have solved it. I will try the DXJK5 ROM later this week to see if the problem appears there.

cmloo said:
May I know which country you are from ? I am from Malaysia. If we at the same location, then maybe we can go there together and make a point.
Click to expand...
Click to collapse
Hi cmloo, I am from Thailand. I have posed on some thailand's user webbroad but no one has this issue. I recently not have this issue for 1 week also for normal use which not repeatly turning on/off wifi.
Thank you for your update.

@cmloo
I fully agree! Thanks for the upgrade!

Related

[Q] wifi problem (azusaROM 1.04.29062010)

hi, I bought a second hand tattoo last month, the previous owner installed azusa 1.03 on it but wifi didn't work at all (I was able to switch on the wifi) So I flashed with the last Azusa ROM (1.04).
first the wireless worked fine, but, I think after a reboot, the phone wasn't able to get IP address on every AP I tried. however I can connect a wireless network if I set a static IP on the phone...
any idea to fix this, please?
(sorry if it's a problem to post it a second time, but I don't know if the problem come from the ROM or not...)
Well, I have the same problem with the wifi. It sucks cause this rom is really fast and non-functional wifi is the only deal beaker... Try to contact the developer Coburn and ask him. If you reach him, tell him that I already posted a log of the problem on the project's site.
Sent from my Tattoo using Tapatalk
Any news on this? I really like the ROM but not having wi-fi completely kills it =\
None so far... And I doubt that there ever will be a fix for the issue. I abandoned this Rom.
hi, I didn't find a real solution for my problem... I just installed an app named "wifi static" and I set the few network config I use usually, it works, but I can't connect to any free hotspot easily.

[Q] wifi keeps switching on and off

Hey all,
since a couple of days I have a problem with my wifi, it keeps switching on and off (I can see the checkbox activating and deactivating, every couple of seconds, at the moment it is unchecked and says "error")
as I said, the wifi worked before
I am running cyanogen 7 (http://android.doshaska.net/cm7) on Milestone
- But I have also tried MIUI, with the same problem
does issue sound familiar to anyone?
Maybe it is an app which force turns my wifi on/off, is there any way to check which one it is (as far as I know I don't have an of them, eg juice defender, tasker installed)
Many thanks
Have you tried other WiFi networks? Because the same error being reproduced across two different ROMs seems a little unlikely.
Well, the problem is that my wifi doesn't stay on long enough (just a couple of seconds) to scan/connect to any network.
Sent from my Milestone using XDA App
supermooshman said:
Well, the problem is that my wifi doesn't stay on long enough (just a couple of seconds) to scan/connect to any network.
Sent from my Milestone using XDA App
Click to expand...
Click to collapse
So it isn't a problem connecting to a network, it's a problem of the wifi not even being able to turn on?
Well "technically" it does turn on, but it switches off immediately
Sent from my Milestone using XDA App
wow, i just logged in to search for this issue myself. I have that same issue across multiple roms also. The one that did work was the Telus Lite Eclair. I liked that one, but of course I wanted to check out others. Each one was the same as you describe. Wifi scans, disconnects, scans, in a loop.
I have done searches on google for wifi disconnect loop android, and seen some stuff about kernals and stuff that is over my head at the moment. If some one has an idea on how to get it working that would be great.
I wipe before any install, I've went back to stock and it works, everytime I went to the Telus Lite one it also always worked. I dont know if theres a clue there or not?
Im on an Telus milestone in Canada, on Telus network if that makes a difference.
And since I think this is my first real post, Thanks for the work guys.
Not sure if this would work, but this is the first result that popped up: http://www.droidforums.net/forum/koush/75782-wifi-disconnect-loop-cm6-final.html
EDIT: People are saying that Hidden SSIDs and MAC filtering can cause problems when trying to connect to the WiFi network. Try forgetting the network, making the network visible(protected if you wish) and reboot the phone and try again.
ok, time for a stupid question...
where do I find suitable kernels?
I can't find anything about this (roms and kernel tweaking is a is pretty well documented though)
supermooshman said:
ok, time for a stupid question...
where do I find suitable kernels?
I can't find anything about this (roms and kernel tweaking is a is pretty well documented though)
Click to expand...
Click to collapse
As far as I know, you won't be able to change the kernel on the Milestone at all, due to the locked bootloader.
Sent from my Milestone using XDA Premium App
a little update, I checked my settings on my router and there was nothing really out of place. For poops and giggles I installed Shawdowmod, and it works with out issue with my wifi. Go figure. Anyway, think im keeping it.
Thanks for the help.
hmmm, good to hear you figured it out.
I just went back to stock and guess what? still nothing
maybe I'll try that rom and see

[Q] Wifi - problems..

Hi,
let me thank you for all the help you may give me.
The problem is i get stuck on obtaining ip address or the cell doesn't even try to connect automatically so i have to manually start the wifi connection to the network after turning on wifi.
The problem of my SGS not connecting automatically is rare, the first is not, it's actually quite often.
I looked through all the guides and sugestions but i couldn't find any permanent solution for this problem.
Note: I've used the AllShare app but sometimes even that doesn't work.
Thank you for all help
The same problem kept happening with me. Some of the fixes which I tried were
Change channel on router - didnt work for me
Use the allshare app first - worked
Set up a static ip in advanced settings - almost always worked
But I have found that I didnt have this problem with other routers, only mine, maybe because of a power problem with the router.
Many of baffling errors are usually caused by bad input power to devices.
Hope it helps
Thanks for the reply, the problem is that i use it alot on my university, where i can't do any changes to their router (or use static IP).
Also the AllShare app is indeed a fix, but only if used every time i think. I'll do some more testing, this problem is really annoying and that's a shame because it complicates the use of most of the smartphone capabilities.
So if anyone else as another solution i would be glad to hear it.
Also i'm on stock rom installed by my operator Vodafone (had the same problem on JPY).
Edit: After a very quick test, it seems that using Allshare once does work, but i had the impression that sometimes it would be needed more than once (even without rebooting). TY for the tip.
Update:
After some more tests i came to the conclusion that at home i need to use AllShare every time i want to connect to my network.
This seems to be a problem affecting several users of SGS, does anyone know the answer to this problem? Or at least an app that minimizes it?
It's quite bad and very frustrating. Thanks, for any and all help.
I had the same problem with stock Android 2.2.1 on 3 phones all Galaxy S. Dropping the packages on voip calling, internet was slow most of the time. I use a linksys wrt54g with dd-wrt, I never had problems with any other devices.
My problem was solved when I installed GingerReal. Also on Miui I didn't had any problems with the wifi connection.
Maybe is just the stock driver incompatibility with some devices.
Thanks for the reply,
I've only had bad experiences with flashing, last time i did everytime right and Odin just hanged, i almost had a serious problem in my hands.
Since this is probably the first and last good phone i'll ever have, i would really like not to kill it (also some people in my family would be very disappointed, it was a gift).
So any workaround? Sorry i'm so insistent but i think that are a lot more people interested in this. TY.

[Q] When I turn wifi off, Note does not connect to 3G or HSDPA

Hi guys,
I have this strange problem, it even seems random.
After I turn wifi off, my Note does not connect to 3g anymore.
And I have to reboot the phone to get it working again.
Does anyone experience the same problem, or knows a sollution?
I rooted KK1 and flashed LA4 using Mobile Odin.
Cheers,
Daan
I've had this problem once, but it worked again after a reboot. Haven't experienced it again. It happened on KK5, but i flashed LA4 yesterday, so it's too early to tell if it will happen again.
It also happened on my Desire HD with MIUI and also while running CM7, so it might turn out to be a bug in Android.
I guess you had turned/switched off data network mode by pressing and holding the turn off button for two seconds.
Try and turn it off and see if it is the same symptom that you had before.
Sent from my GT-N7000 using xda premium
m2b999 said:
I guess you had turned/switched off data network mode by pressing and holding the turn off button for two seconds.
Try and turn it off and see if it is the same symptom that you had before.
Click to expand...
Click to collapse
No, this is not the issue.
I manually set the APN settings for Telfort, removing MMS and setting it up for "internet" only.
Did a wifi on/off cycle, with a short interval and it seems to work.
Going to test with a longer interval. Not completely convinced yet.
Hope it's fixed.
---------------
edit: Not fixed!
On wifi for half an hour, turned it off and [email protected]#$% 3g does not connect anymore.
Maybe it's just Telfort. They don't have the Note listed on their website, but still.
My infuse 4g does this. I have to put it in airplane mode then back to get my data to reconnect. It did this stock and on serindipity 7. I couldn't find a fix either.
Goneeuro said:
My infuse 4g does this. I have to put it in airplane mode then back to get my data to reconnect. It did this stock and on serindipity 7. I couldn't find a fix either.
Click to expand...
Click to collapse
Annoying stuff! Cycling airplane mode does not work for me, only a full reboot.
But if you had the problem too, It could be that it's the network's (in my case Telfort's) problem.
Maybe I have to get my sim replaced, but I'm switching to T-Mobile in about a month.
So it's a bit of a pain.
I am currently using the infuse on o2 in Germany, but it did it on att in the states also. I can't wait to get my note. I am just waiting for it to be released on o2 over here. They have the black but I really want a white one.
Goneeuro said:
I am currently using the infuse on o2 in Germany, but it did it on att in the states also. I can't wait to get my note. I am just waiting for it to be released on o2 over here. They have the black but I really want a white one.
Click to expand...
Click to collapse
Telfort used to be O2, it has been using KPN's network for a while now.
So it's probably not connected. Though it is a strange coincidence.
I'm off today, I think I'll walk by the Telfort store to ask for a new sim or something.
Maybe they'll have to flip a switch somewhere.
DaanJordaan said:
Telfort used to be O2, it has been using KPN's network for a while now.
So it's probably not connected. Though it is a strange coincidence.
I'm off today, I think I'll walk by the Telfort store to ask for a new sim or something.
Maybe they'll have to flip a switch somewhere.
Click to expand...
Click to collapse
Did u try keeping network mode in "WCDMA Only" ??
DaanJordaan said:
Telfort used to be O2, it has been using KPN's network for a while now.
So it's probably not connected. Though it is a strange coincidence.
I'm off today, I think I'll walk by the Telfort store to ask for a new sim or something.
Maybe they'll have to flip a switch somewhere.
Click to expand...
Click to collapse
what i think is..i had dis problem too...
if minor tweaks dnt work...format yr phone..n if it still aint working
change your firmware...
still nt working den i would blame the network..!!
ranjan.alva said:
Did u try keeping network mode in "WCDMA Only" ??
Click to expand...
Click to collapse
Thanks for the reply, yes I tried it. Did not work sadly
drashish36 said:
what i think is..i had dis problem too...
if minor tweaks dnt work...format yr phone..n if it still aint working
change your firmware...
still nt working den i would blame the network..!!
Click to expand...
Click to collapse
Yeah you're right, I have to troubleshoot properly. But it's such a pain
And I think I recall having this problem a few roms back as well.
I'm not sure because I was on wifi all the time.
But I have to wipe, I'll use titanium backup so it won't be such a hard blow
Man I'm going to pissed if it turns out to be the network
DaanJordaan said:
Thanks for the reply, yes I tried it. Did not work sadly
Yeah you're right, I have to troubleshoot properly. But it's such a pain
And I think I recall having this problem a few roms back as well.
I'm not sure because I was on wifi all the time.
But I have to wipe, I'll use titanium backup so it won't be such a hard blow
Man I'm going to pissed if it turns out to be the network
Click to expand...
Click to collapse
Thats a pain i was so tired of formating,..reformatting....coz many custom firmware have some error and new updates keep coming almost daily...and all ask to wipe for best experience..dat was when i finally decided to come bk to stock and stick to it...
yeah it doesnt hav those fancy colors and throbbing speed which a custom rom boosts about but...but hey everythin works flawlessly and i dnt have any tension of random reboots and alarm not ringing..or any smartphone related error to comeup...plus all my apps and schedule is there forever no reinstalling tension....enjoying my phone....
Okay, so I I did a full wipe and installed a deodexed rooted LA4.
I still have this issue.
Also tested on KK1 stock and still experienced this issue.
If it does this on KK1 and LA4 it's reason enough for me to believe it's the network.
I'll just wait for my T-Mobile plan to start. Meh.
edit: It seems to work just fine on CM9 :-/

[Q] why does wifi always die in DjangoManoucheX?

Okay guys I've got a constant problem with DMX, not just with this version, but I start to get tired of it. So after a day or two of flashing, wifi starts to stuck at "Obtaining IP address", and does not connect at all after that. As I said it's not only with this version (I'm on 1.6.5), I have also tried different kernels, etc, but it's still the same. I don't want to always reflash, but I'd also stick with this ROM as I really like it. This problem does not come up on CM-based ROMs at all. Thanks for any tips.
Btw I've also tried static/dynamic IP settings, I've changed a router (not because of this), reseted it many times, so not that I didn't try anything at all.
I never had a issue... Have you installed the rom with full wipe?
Of course I did a full wipe, didn't restore any system apps, and as I said it works perfectly for a few days, then bamm! I was playing SongPop, started a game with someone and it stopped when downloading songs.. then I went in wifi options and it showed this IP bug once again. By the way I've just finished reflashing (now without full wipe), and it doesn't even connect now. I really like flashing ROM's etc, but not the same one all over again lol.
Finally I could set static IP on my phone, works now, Thread can be closed. If anybody has the same problem (I've read I'm no the only one), then holla at me!
I'm having a wifi issue from the day i have purchased this phone my wifi always go in the sleep mode don't know why no matter which ROM i use it goes to sleep after the screen is locked or after 5-6 sec of no use of phone.
i'm the only one having this prob i guess.. I thing its an hardware issue, not sure, hope some1 could help me out ^_^
Note: i have kept wifi policy sleep never
Problems with wifi is a kernel issue.
Its adviseable to post which kernel is used
Well I wouldn't be sure, as I was using Kowalski kernel and KoB kernel too, both had the same problem, and only on DjangoManoucheX ROM. But it seems to work now with static IP set.
akash.mahadeshwar has his ROM/kernel stated in his signature, too bad I can't help you.
Lol I don't know if its hardware or software issue but changing rom or kernel dosent fixes it :-/
Sent from P990 the beast phone ^_^
akash.mahadeshwar said:
Lol I don't know if its hardware or software issue but changing rom or kernel dosent fixes it :-/
Sent from P990 the beast phone ^_^
Click to expand...
Click to collapse
have you tried changing your wifi to static ip?
if not, then go into wifi settings and long press/modify the one you cannot connect to. Go to advanced settings and change from DHCP to Static IP. Run Windows commander (just type 'cmd' in the Start Menu search box), and type 'ipconfig /all'. It will show all the informations you need to type to your device's wifi settings. You can give almost any number to the first IP field (when your IP getaway is, for example 192.168.7.1, you only have to change the last number to any you want to, like 192.168.7.155.. but the best way is to get the IP number your device used before wifi got stucked). If you can't see DNS1 and DNS2 in your ipconfig, then you have to go into your router's settings (in browser), that will show them. If you type everything correctly, then Save button won't be greyed out no more, and voila. Wifi works perfectly for me since then. I hope it helps.
Sent from my LG-P990 using xda premium
Changing Wi-Fi to static is far from being a solution; at best it's a workaround.
It's probably related to LG code, used to compile the module loaded by kernel.
I'm not sure if the problem you're reporting us exactly this: I have a brief disconnection/reconnection sometimes when I unlock the phone (Wi-Fi suspends policy sets as never), but this it's not annoying me to much because while sleeping it's connected, and the 2-3s after wake-up is not to much.
Do not say "thanks"; just press it under here.
louiscypherbr said:
Changing Wi-Fi to static is far from being a solution; at best it's a workaround.
It's probably related to LG code, used to compile the module loaded by kernel.
I'm not sure if the problem you're reporting us exactly this: I have a brief disconnection/reconnection sometimes when I unlock the phone (Wi-Fi suspends policy sets as never), but this it's not annoying me to much because while sleeping it's connected, and the 2-3s after wake-up is not to much.
Do not say "thanks"; just press it under here.
Click to expand...
Click to collapse
No, my problem was I could not connect to my wifi AT ALL. Couldn't even do it after a full wipe and reflash, so using a static IP is a solution for me, as it works for 3 days by now. It can be related to the stock ROM's code, as CyanogenMod ROMs don't have this problem for me.
Try flashing KoB kernels again, in mine its wifi work correctly
Sent from my AD683G using xda premium

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