yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] PunkOz:
I uploaded another logcat where it connected at the end, after i unplugged the USB when I was sending you the file, wifi went off again and it gave me a spam of AP scanning in the logcat.

Edit: I forgot to press "Save changes" I uploaded the logcat again. my bad! it's in the first page now! thanks!

I know it could be the baseband but I've flashed Stock ROM of my company, different ROMs (Paranoid, CM10, CM9, Stock samsung) and each of them come with a different modem. the weird thing is that it worked twice with CM9 Resurrection with stock kernel of that ROM, it keeps disconnecting though and when I changed to fluxi kernel it wouldn't work at all like in the beginning of all this, it'd just stay in dim grey and say "turning wifi on"
[Galaxy S II General] AlAneed:
Had the same issue with my uncle's phone and it's still on warranty! He was using ICS Stock ROM and never tried the stuff we learn from XDA LOL

Well, I tried everything you said and restore it to the 1st ROM 2.3.3! I thought first it's a software issue but with more work on it I think it's more hardware issue and I gave it to the service since it's warranty and so far, I didn't get any info about the case :/

I'll let you know when I get it back :)
[Galaxy S II General] PunkOz:
I think this is a software related problem you know, when I flash CM9 Resurrection my WiFi actually scans networks and when I put another kernel it just freezes! and I get a different error, I think I'm having a problem with something named "supplicant" or something. I'll let u guys know more about this once I try restoring my phone with a nandroid backup that my friend made with his working galaxy S2
[Galaxy S II General] PunkOz:
I just tried flashing a nandroid backup that I made from my brother's phone and It didn't work, It got worse again, WiFi won't even scan now. Before doing this I had CM9 Resurrection and then I flashed Jelly Bean again and it would scan networks. This problem is pissing me off :/ Any Advice?????
[Galaxy S II General] bahmonkeys:
"Whenever you compile a custom kernel, there's a strong possibility that a new wifi driver will also be compiled (wlan.ko, wireless.ko) and these files are included with custom ROMs + kernels... This is the "Wifi patch" you're speaking of"

This is what I was talking about: http://xdaforums.com/showthread.php?t=1176502 . This is a quotation of the developer of this kernel

"[ NOTICE ]

since i have changed the kernel version string stock wifi modules will no longer work on my kernel...

if u try to enable them on new kernel (v7 onwards) u will get "ERROR" while starting WIFI...

i will be providing wifi modules for my kernel which HAVE TO BE FLASHED VIA RECOVERY for wifi/bt to work correctly

stock wifi modules will also be provided which again will have to be flashed via recovery if u want to return to stock kernel OR if u revert to older v06 or lower kernels

remember i have already told this to u guys... if i see some users reporting that wifi is giving error because u did not follow my instructions ur post WILL BE IGNORED....

"
[Galaxy S II General] PunkOz:
Hmmm.. Sorry I'm kinda slow but aren't those zips only for xperia play?
[Galaxy S II General] hua_wuxin:
In that post the zip is providing a bcm4329.ko file which will be extracted to /system/lib.

You don't need this kind of patch if you are using complete stock Samsung firmware, I think.

In you new log there are below errors, hope someone can help:

...
E/wpa_supplicant( 3538): wpa_driver_nl80211_driver_cmd: failed to issue private commands

E/WifiStateMachine( 1992): Failed to set country code mx
...
E/WifiStateMachine( 1992): Unable to change interface settings: java.lang.IllegalStateException: Unable to communicate with native daemon to interface setcfg - com.android.server.NativeDaemonConnectorException: Cmd {interface setcfg wlan0 0.0.0.0 0 [down broadcast running multicast]} failed with code 501 : {Flag unsupported}

E/WifiHW ( 1992): Unable to open connection to supplicant on "wlan0": No such file or directory
...
E/wpa_supplicant( 3613): wpa_driver_nl80211_driver_cmd: failed to issue private commands

E/WifiStateMachine( 1992): Failed to set country code mx

E/wpa_supplicant( 3613): wpa_driver_nl80211_driver_cmd: failed to issue private commands

E/WifiStateMachine( 1992): Failed to set frequency band 0

...
[Galaxy S II General] PunkOz:
Thanks! this is really helpful. Some developers told me that it's the Wi-Fi chip, but I refuse to accept that, the problem gets different everytime I change something in the software, so, It can't be a hardware problem. in the link i provided in the first page it shows how a lot of people are having the same problem and they are replacing their phones, if we could find a fix and post it there we could save a lot of people from replacing their phones or spending money buying the parts when it's a software problem and not hardware.

Thanks again for reading the logcats and taking the time to reply! cheers
[Galaxy S II General] CuBG:
You can start digging into gokhanmoral.com for older siyah kernels where GM was integrated WiFi drivers from N7000 just for the test.I readed every single posts in this thread i didnt understand actually did you try to flash stock ROM with 3 files + PIT ? If you are not i can give you a link with STOCK GB 2.3.4 3 Files + PIT ready for flashing for my country with instructions how to flash via ODIN ( firmware is not branded ;) )
[Galaxy S II General] PunkOz:
I already tried flashing a stock firmware with odin, and PIT file 1 day later. I flashed one at time though, I flashed stock firmware and then the PIT file. But worth a try! Give me the link and I'll flash them together. Thanks!
[Galaxy S II General] CuBG:
Here you are ;) http://www.4shared.com/rar/KJwmUVQJ/STOCK_I9100XWKI4_XWKI1_OXIKH1.html?

PIT - u1_02_20110310_emmc_EXT4.pit

PDA - CODE_I9100XWKI4_CL575468_REV02_user_low_ship.tar .md5

PHONE - MODEM_I9100XWKI1_REV_02_CL1058370.tar.md5

CSC - CODE_I9100XWKI4_CL575468_REV02_user_low_ship.tar.md5

Load it in that order and make sure Re-Partition is checked ;) I give you the instructions just in case ;)
[Galaxy S II General] AlAneed:
With the ability to scan does it find any nearby wifi connection? In my case (I think when I flashed stock ROM 2.3.3) It showed me that is scanning but couldn't find any network and after 5-10 seconds the wifi connection goes OFF !! :/
[Galaxy S II General] hiepgia:
...

E/wpa_supplicant( 3538): wpa_driver_nl80211_driver_cmd: failed to issue private commands -> Can't make contact on wifi library

E/WifiStateMachine( 1992): Failed to set country code mx

...

E/WifiStateMachine( 1992): Unable to change interface settings: java.lang.IllegalStateException: Unable to communicate with native daemon to interface setcfg - com.android.server.NativeDaemonConnectorException: Cmd {interface setcfg wlan0 0.0.0.0 0 [down broadcast running multicast]} failed with code 501 : {Flag unsupported} -> Can't set ip on interface wlan0

E/WifiHW ( 1992): Unable to open connection to supplicant on "wlan0": No such file or directory -> Wlan0 device memory can't init on wifi library

...

E/wpa_supplicant( 3613): wpa_driver_nl80211_driver_cmd: failed to issue private commands

E/WifiStateMachine( 1992): Failed to set country code mx

E/wpa_supplicant( 3613): wpa_driver_nl80211_driver_cmd: failed to issue private commands

E/WifiStateMachine( 1992): Failed to set frequency band 0

...

Wifi gone. Buy new mainboard and replace it or you can't connect wifi! :)
[Galaxy S II General] PunkOz:
You seem to be having the same problem as me when I flashed gingerbread

How can you explain that this started happening to a lot of people in the last month? I think something must be wrong in the software
[Galaxy S II General] nuwanmw1988:
I am also having the same issue.today I flashed stock with pit.but no luck.
[Galaxy S II General] Ba7rani123:
it gets different because each rom handles the problem differently, I guess its a hardware problem. Try different kernels... Siyah kernel
[Galaxy S II General] hiepgia:
Use search button and find "wifi problem", you will find many people facing this problem. This due to chip batch from boardcom bcm4330 have problem.:mad:
[Galaxy S II General] sahibunlimited:
Why not replace under warranty?
[Galaxy S II General] PunkOz:
I can't, my galaxy is 1 year 1 month old.

Ok i'll take a look

I tried Siyah already, not the JB version though!
[Galaxy S II General] nuwanmw1988:
Did you try flashing XWLPO?Some say issue is fixed in XWLPO.
[Galaxy S II General] PunkOz:
I tried flashing Stock GB, CM9 Resurrection (Odin), and jelly bean. Do you think this firmware has anything different?
[Galaxy S II General] nuwanmw1988:
Just a suggestion. saw in several places people telling that this one fixed their WiFi issue.
[Galaxy S II General] PunkOz:
Hmmmm I'll give it a try! Thanks!
[Galaxy S II General] bahmonkeys:
Have you disassembled your phone yet?
[Galaxy S II General] lexaniji:
I got the same problem. Sometimes when i turn in my wifi. It keeps scanning. And after a while my phone reboots. And i find it quit annoying because i got it back from samsung a few days ago for replacement of the mainboard.

I am not rooted or anything. Anyone with a solution?

Kind regards
[Galaxy S II General] Ba7rani123:
I dont know I dont have this problem but I have a few suggestions :

1. Full Wipe

2. Flash a new rom and siyah kernel because I feel its the best plus the jb version has updated wifi drivers

Hope it works for u :D Good luck
[Galaxy S II General] Ba7rani123:
I dont know I dont have this problem but I have a few suggestions :

1. Full Wipe

2. Flash a new rom and siyah kernel because I feel its the best plus the jb version has updated wifi drivers

Hope it works for u :D Good luc
[Galaxy S II General] lexaniji:
I'am not rooted. So how to wipe. Dont want to root either. Had to send my sgs2 to samsung. As it got screwed with Checkrom and Siyah 3.3.2 :(( I dont want to risk it again
[Galaxy S II General] jemberton:
Haven't had time to read the entire thread but I had an identical issue on different hardware. Fixed it by running fix permissions in recovery.
[Galaxy S II General] bahmonkeys:
I wouldn't buy an Android phone if i couldn't root, Mod and have XDA developers at my finger tips. Root your phone and don't be a afraid!!! You cant fully kill an S2 unless you do something crazy with it. Read some tutorials because your knowledge sounds very limited. Anything that happened or will happen to you has happened someone else, problems and solutions can all be found by searching XDA forums.

Don't try to blame the developers of something you did!!!!
[Galaxy S II General] neo335:
I also resolved my wifi issue by running fix permissions in recovery. Also try to restart your router sometimes solve this issue.
[Galaxy S II General] nuwanmw1988:
I sold my s2 because of this issue.
[Galaxy S II General] 666fff:
I also got this issue for a period of about 2 months. When I would go to turn the wifi on, it would sometimes get stuck as a dull 'wifi turning on' message in settings. It would never actually complete and turn on. The only way to fix it was to turn the phone off and on again. This happened kinda regularly until a few weeks ago, now it never happens.

I was on Neatrom 4.0.3 stock kernel, now I'm on Neatrom 4.0.3 siyah dorimanx kernel. Maybe the kernel fixed it, I dunno.
[Galaxy S II General] cowbutt:
For some, it might be a hardware problem, caused by leaking BAT500 damaging the WiFi chip. Or that might just be Samsung techs trying to blame the customer and getting a repair fee out of them.

For many, though, it's a software problem. I had it as soon as I upgraded to 4.0.3 from 2.3.5, and I fixed it by increasing /proc/net/vm/min_free_kbytes from the default of 3606 to 16384. You'll need to be root to do this.

Reportedly, it's fixed in 4.0.4.
[Galaxy S II General] sleepless:
I had this problem since my SII start to stuck in reboot loop.

With *#526#, I found wlan test fails. It said "NotSet Driver loaded [NG]".

I thought my wifi problem would be hardware problem exactly.

But with CM10 and Siyah kernel, my wifi can turn on again.

Thank you so much for all suggestion in this thread. >____<

edit

Now back to 4.0.4 stock rom, my wifi is back. XD
[Galaxy S II General] trukuntraken:
I have two month with this issue

I'm about to change my device because of this problem. I've changed roms and kernels and the last thing I did was download the test rom from the sammobile site. This is a jelly bean test firmware and works very nice, only that sometimes turns off, but this is no big deal.

The remaining issue is that of the connection to wifi (about 2 months with this issue).

I'm still waiting for a solution...
[Galaxy S II General] ares05:
Having the same issue on my phone. I think it is the mainboard being fried, though i really hope this isn't the case. Very very frustrating. This had happened to me once 2 months ago and i switched off the phone and after 8 hours it was back up and running. Then 2 days ago it just went dead. This time even after being switched off for a long duration, it hasn't fixed the problem. Any suggestions guys?

And i was hoping to keep the S2 till the S4 launched :crying:
[Galaxy S II General] Ba7rani123:
Did you try flashing a different modem and see...
[Galaxy S II General] ares05:
Different modem, different ROM, stock ROM... Tried em all. Nothing :(

_______________________________________

Sent from a GT-I9100 having a mind of its own
[Galaxy S II General] Ausboy 2011:
i had this problem on my s1 and the wifi would sometimes turn on but would never see the aps or connect successfully.. think most likely a dead wifi chip mate :(
[Galaxy S II General] ares05:
I'm beginning to think that too. Sucks though! You buy an awesome expensive smartphone and it goes kaput in a year and a half. Do companies these days just build phones that let em get through the one year warranty mark?! My freaking Nokia 6600 is more than 8 years old and still runs fine! Was hoping to keep the S2 till the S4 launched next year. Now I've gotta decide between expensive 3G bills or break the bank for a new phone. Every manufacturer has their own issues but this has put a big dent in my trust in Samsung. Hope HTC or Sony has something better to offer

Sorry for rambling OT, just bloody frustrated :(

_______________________________________

Sent from a GT-I9100 having a mind of its own
[Galaxy S II General] Ba7rani123:
Mostly likely its a WiFi chip issue, it happens rarely with phones... but if still on warranty you all should go and see :o
[Galaxy S II General] PunkOz:
Hello, my wifi seems to work now, i created this thread btw.

My wifi works for like .. I dont know sometimes it works for a few seconds or minutes and I'm able to check websites or download apps. Weird huh? It used to stay in grey and now i can actually use it for a few seconds. still thinking is the wifi chip? The problem keeps changing..
[Galaxy S II General] Ba7rani123:
its normal for dead wifi vhips to work for a few seconds...
[Galaxy S II General] fatbuccha:
I also experience this before, i tried to reset fuel gauge if you're on siyah or dorimanx, problem went away after doing that. Try if it will also work on you, im on wanam lite leaked version of jb and never encounter the problem again :)
[Galaxy S II General] PunkOz:
isn't that for battery? how would that affect the WiFi? O-o I think I've done it a few times when I was on ICS lol
[Galaxy S II General] fgsuzuki:
Battery leak (BAT500

Hi, I'm from Brazil and I have a battery leak problem (battery BAT500).

The same problem described here: Search Google "samsung-galaxy-s2-wifi-issue" + "stampede-design"

(I can't post links here)

My Galaxy S2 (GT-I9100) is 14 months old, just passed the warranty.
[Galaxy S II General] stingrass:
sg2 wifi problem

can anyone help me... my s2 got wifi prob... suddenly my wifi can't use ... never flash to other rom... it that hardware failure or else.
[Galaxy S II General] tojur:
Yes, reset battery stats helped with Wi-Fi

Thanks a lot, after I booted to recovery and

cleared battery stats

my Wi-Fi can be turned on and works! What a magic...

Things had broken after first time flashing rooted kernel and ROM (currently Kernel_Siyah-Dorimanx-V9.0-[17-39]-[05-03]-JB-CM-AOKP-SGII-PWR-CORE and cm-10.1-20130304-NIGHTLY-i9100)

Tom
[Galaxy S II General] khani245:
What did you do to make it work?

I'm having the same problem as you did and have tried everything to solve it...

Your efforts will much be appreciated if you could help.

Thanks & Regards.
[Galaxy S II General] khani245:
Can u explain what u exactly did?
[Galaxy S II General] cloneme:
I have simiilar problem, I have had my phone (SG2) for 2 years and have upgraded my firmware from GB 2.2.3 up to XWLSH and have rooted my phone most of the time. I went to Thailand and had NeatRom on my phone and was working well until I coudn't pickup wifi over there so I took it to a phone vender where I bought a sim to use there and see if he could fix. When I got it back it seemed to pick up signals ok. When I got back to Australia I realised that the gfuy had put GB 2.3.6 on it. I have tried most of the options in this thread but none work.

I get green ticks in the wifi section using GB but can't scan. In NeatRom everything is greyed out. Looks like i will have to see Samsung Service.
[Galaxy S II General] cloneme:
Just an update re wifi issue of not being able to connect or the wifi button is greyed out please read this as it might help.

http://www.stampede-design.com/blog/2012/07/samsung-galaxy-s2-wifi-issue/#.UdFej6x1OUl
[Galaxy S II General] sleepless:
Sorry, I can't remember all the process. ^^;;

But as in the quote I suggest you to flash your SII with CM10 rom and Siyah kernel.

After the wifi turn on then flash your SII back to Stock rom.

Sorry for my english.
[Galaxy S II General] Harsha Raj:
So firstly I started to have lots of frequent WiFi drops in my S2. Thought it was my router and replaced it. Still the WiFi drops continued. I feared for the worst. Then one day the WiFi just simply failed to switch on. Tried many ROMs from Stock 2.3.x to 4.1.2 and all lots of custom ROM. None fixed it. So there by I confirmed its really an hardware issue.

I took up the courage to open my device and checked out the mother board and I could see right there that the BAT500 which is beside the WiFi chip had leaked terribly and corroded the circuits beside it [Check the attached images, not my own but looks similar to it]. I later gave it for service center and they said they had to replace the motherboard and quoted me a price of Rs.8000 (130$) as the device was out of warranty. I did not agree for it.

Later I went to a local repair shop. Explained him and showed him the images. He said he will try cleaning it with alcohol and then update me on it. However alcohol cleansing did not do the job. I was told that he will look for spare motherboard and replace the same to my phone. After 10 days I got a call saying the WiFi is fixed without changing the motherboard, but just by replacing the ICs from the spare motherboard for Rs.2500 (40$). This avoided the change in IMEI number too.

So finally S2 is back in hand in perfect condition. Its been around 3 days since the local repair and so far so good.
[Galaxy S II General] stoff212:
not hardware issue

I had the same problem after flashing beanstalk kitkat. Wifi was greyed out. I read here http://www.stampede-design.com/blog/2012/07/samsung-galaxy-s2-wifi-issue/#.UdFej6x1OUl

Dismounted and cleaned the small battery. Nothing. Reflashed other kitkat roms. Finaly wifi worked just like before . Now i am on stock jb 4.1.2

I repeat software problem
[Galaxy S II General] alinn2024:
I know this is old but maybe will help other ppl who still got the issue.

I had the same problem.At first wi-fi keep disconnecting.Fixed with plane mode/reboot.But after a while nothing worked.Flashed every rom out there(popular ones) same with kernels.Had this problem for over a mounth or so.

Long story short I got it fixed by flashing CM 9 official + siyan kernel 3.5.1/2.Now I'm on CM 11 by infected and it works great.
[Galaxy S II General] Harsha Raj:
It's weird.. Few are facing hardware and few are facing software issues. Those who had software, I saw you people are lucky. But if the problem comes again in the ROM it's working then probably can be hardware too.
[Galaxy S II General] slubo:
wifi problem

FYI, my 2y old sgs2 was running SentinelRom v.5 (based CM 10.2) JB4.3 for few months with no issue. few days ago no more WIFI (button is grey). wiped, re-flashed - no good.

Disassembled the device (https://www.youtube.com/watch?feature=player_embedded&v=65pvAINg2ME) pulled out the motherboard cleaned every square mm...in vain (didn't notice any backup battery acid leak|).

flashed Dorimanx Kernel- now it's nice and smooth again like new.
[Galaxy S II General] PunkOz:
Haha I completely forgot about this thread, I got a Nexus 4 after my S2 and now a Nexus 5.

I gave up on my Galaxy and I managed to sell it even with the broken WiFi.

I openned it before selling it and I THINK the WiFi chip was water damaged, I cleaned it but nothing worked. I hope the list of things I tried help people having problems with WiFi not working due to software! :)
[Galaxy S II General] PunkOz:
That's exactly how my S2 WiFi chip looked like. I thought it was water but oh well. Nice shot! I hope this helps others to find out if their problems is due to software or hardware.
[Galaxy S II General] bangho85:
what's your room now? I flashed Dorimanx kernel but wifi still can not turn on. I think its hardware
[Galaxy S II General] rodrigoo:
Is not a hardware issue because I switched my wifi card and the issue continues.
[Galaxy S II General] bixi:
Since 3 years my wifi works well

Inviato dal mio GT-I9100 con Tapatalk 2
[Desire HD Q&A, Help & Troubleshooting] 1Learning:
This is probably a duh question - but how do you turn off the haptic feedback in Android Revolution v6.3.3.? I turned it off in the settings - settings, sounds and also in language and keyboard but yet when I type, there is still haptic feedback, i.e. the phone vibrates. How do you turn that off? Thanks.
[Desire HD Q&A, Help & Troubleshooting] rohithksaj:
just reboot ur device.....................:victory::victory::victory::victory:
[Desire HD Q&A, Help & Troubleshooting] 1Learning:
Lol. Done. And done.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] suhas_greeneyes:
hi i have just installed fusion 2.5 rom in my phone...

after do all 3 wipes with abyss kernel, rom is finished installing successfully...

but prolem starting after reboot the phone...its just getting stuck at samsung logo..

i tried to reinstall the rom 3 more times...but no use...same problem...

pls somebody help me out .... thnx...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] suhas_greeneyes:
Prob. Solved..i chk rom wid md5..n it was didnt match..so dowoaded again..n everything just go f9..:o:eek::rolleyes:
[Galaxy S III Q&A, (US Carriers)] sflagg73:
My phone is a week old tomorrow. It is bone stockTmobile and has been having force close/ freeze issues. Nothing specific that I can recall doing at the time. I have a moderate amount of apps and games I play on it. When calling or just using in general it freezes which I then have to restart or pull the battery if completely frozen. I have wiped the phone and went back to factory setting. It seems to make no difference. What have you guys done to fix this issue?? A guy I work with has the exact same phone and his works flawless. I normally close the apps when done and I regularly clear the memory in the ram tab to help keep things running good. My S2 also started getting force close and freezing issues after updating to ICS. While I was waiting for Tmobile to warranty the S2 I bought the S3. Now have similar issues. Plus this phone seems to be blessed with wifi dropout issues, complete signal loss (comes back after restart), cant disable the led, and takes a screen shot on its own without having to push home + power. Just wait long enough and viola :) Nice phone but a little bigger screen, and a little faster processor. Starting to wonder if I should just take back and enjoy the S2 till something better comes out. Is it possible I just received a LEMON??