[Q] Issue on CM 10.0 Wi-Fi (Not authenticating/obtaining ip adress) - Galaxy S I9000 Q&A, Help & Troubleshooting

Hi, sorry if there's already a topic about this specific issue, couldn't find any.
Now, as the title says, I'm having problem to connect on Wi-Fi network. I have a Galaxy S (GT-I9000B) running on CyanogenMod 10.0 (ICS 4.1.2) since 3 weeks.
Everything was fine when it started, 3 days ago. I can find the network but can't connect into it. It keeps looping on "Authenticating/Obtaining IP Adress".
Today morning I checked my phone and it was connected on Wi-Fi, so I thought the problem was solved, now it is not working anymore.
So far I tried: restarting; "forgetting" the wi-fi and connecting manually/by wps; wipe cache..
Anyone have an idea on how can I fix it?
Model Number: GT-I9000B
Baseband Version: I9000XXJVK
Kernel version: [email protected] #1
Thanks in advance

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Wi-fi Error and Unknown MAC Address?

Hello guys, I just "bought" a Milestone from a friend and I'm having a problem. Don't matter what ROM or Kernel when I try to activate Wi-Fi the phone starts to act VERY slowly and sometimes stops to work. In airplane mode my Milestone works OK. I tried a lot of apps but nothing worked. I saw this post, but when I tried to copy the file from the phone to the SD to check, it said that doesn't exist, also my MAC Address is "unknown". I talked to my friend and he said that the issue started to happen after he started trying to use Toggle 2G/3G.
Another thing that I saw is in my RSD Lite screen, it doesn't show everything (I can see my IMEI in the "about" screen).
Android Version: 2.3.5
Kernel: 2.6.32.9
ROM: CyanogenMOD 7.1.1 RC14
Build:R.U.R.1920
Sorry about my english.
i still need help.

[Q] Wifi Problem with Android 2.3.5 on Captivate

Hi Guys,
I upgraded to 2.3.5 ( Baseband I897UCKJ2 ), everything works great except the Wifi. Wifi does work, but the problem is once I move out of the current network ( as in when I go to home after work ), it says it is still connected to the work network and doesn't get connected to home network automatically. So, I have to reset WiFi every time. Any help or fix to this would be a great Help!
Please let me know if you need any other information.
Thanks in Advance ,
Vamsi
Phone: Samsung Captivate SGH I897
Carrier: AT&T
OS: Gingerbread 2.3.5
Give the app "Fix My WIFI" a try, you can find it in the market. Seems to have helped out on my reconnection issues, which were the same as yours, although I am running 2.3.4. From what I can tell, it will automatically reset the wifi when a valid connection point is available.
I had the same problem on KJ2. Try updating to KJ3; that solved it for me
+1 for KJ3
10 chars

Problems after root (wifi is shutting down after a couple of seconds)

Hello to everyone!
I have a problem with the wifi on my Samsung Galaxy S I9000.
After I rooted the phone using CF-Root-XX_OXA_JVS-v4.1-CWM3RFS and after using Voodoo Control Plus and BLN control - Pro, when I open the wifi, it's show me Scanning for 3-4 seconds, it doesn't find any networks and after that, the wifi is shutting down.
I used the option Settings -> Privacy -> Factory data reset, but no resolvation.
Informations
When I select Settings -> About Phone
Firmware version: 2.3.5
Baseband version: I9000XXJVT
Kernel Version: 2.6.35.8-I9000XWJVH-CL184813
[email protected] #51
Build number: GINGERBREAD.XFJVA
Click to expand...
Click to collapse
Any advices?
Advice: Put a new ROM. Solved.
Its because youre on JVS go on a different firmware (JVT and up) and if it still doesnt work then go to your router and in the settings set lease to two weeks

S3 i9305 - problematic wifi.

Hello guys,
I just want to share this problem with my S3 LTE i9305, this unit came from singapore (singtel), and im now using it in Cebu, Philippines. However i am having too much trouble with its wifi always getting Authentication errors (when i was still in stock firmware).
I should say i can rule out that my wifi hardware is defective, because I was using the wifi yesterday whole night in our house. downloading stuffs from play store, browsing, facebook and etc.
This is what i already did:
1. downloaded a Hongkong firmware (official samsung stock firmware) flashed with odin with no problem. hoping that the wifi issue is just a corrupt base firmware.
- still wifi is problmatic
2. Im on Cyanogenmod 10.1 4.2.2 Jellybean
- all functions are okay except for the wifi
WIFI SETUP:
keep wi-fi on during sleep: always
wi-fi frequency band: auto
wi-fi region code: usa
wifi optimiation: unchecked
It can seem to detect new wifi with strong signals but whenever you connect to it the signal 'literally' drops to one bar, and stop doing the connection.
the problem is intermittent, meaning:
sometimes it works, sometimes its not - and there is no definite time when it works and when not.
here are the details of my current device:
Baseband version: I9305ZHBMI2
Kernel Version: 3.0.64-CM-g9c2e2b; [email protected] #1; mon sep 23 15:03:19 pdt
Cyanogenmod version: 10.1.3-i9305
Build Number: cm_i9305-userdebug 4.2.2 JDQ39E; eng.jenkins.20130923.145024 test-keys
bercerobry said:
Hello guys,
I just want to share this problem with my S3 LTE i9305, this unit came from singapore (singtel), and im now using it in Cebu, Philippines. However i am having too much trouble with its wifi always getting Authentication errors (when i was still in stock firmware).
I should say i can rule out that my wifi hardware is defective, because I was using the wifi yesterday whole night in our house. downloading stuffs from play store, browsing, facebook and etc.
This is what i already did:
1. downloaded a Hongkong firmware (official samsung stock firmware) flashed with odin with no problem. hoping that the wifi issue is just a corrupt base firmware.
- still wifi is problmatic
2. Im on Cyanogenmod 10.1 4.2.2 Jellybean
- all functions are okay except for the wifi
WIFI SETUP:
keep wi-fi on during sleep: always
wi-fi frequency band: auto
wi-fi region code: usa
wifi optimiation: unchecked
It can seem to detect new wifi with strong signals but whenever you connect to it the signal 'literally' drops to one bar, and stop doing the connection.
the problem is intermittent, meaning:
sometimes it works, sometimes its not - and there is no definite time when it works and when not.
here are the details of my current device:
Baseband version: I9305ZHBMI2
Kernel Version: 3.0.64-CM-g9c2e2b; [email protected] #1; mon sep 23 15:03:19 pdt
Cyanogenmod version: 10.1.3-i9305
Build Number: cm_i9305-userdebug 4.2.2 JDQ39E; eng.jenkins.20130923.145024 test-keys
Click to expand...
Click to collapse
PS: I have used search on this forum and tried the quick fixes.. i also saw sa wifi fix zip for 4.1.2 from another thread and flashed it via CWM but still problem persist...
Id be glad if you can walk me through the troubleshooting process.
bercerobry said:
PS: I have used search on this forum and tried the quick fixes.. i also saw sa wifi fix zip for 4.1.2 from another thread and flashed it via CWM but still problem persist...
Id be glad if you can walk me through the troubleshooting process.
Click to expand...
Click to collapse
You forgot to read the rules No bumping posts .
Wipe phone flash stock rom and test fails you need a service centre .
JJEgan said:
You forgot to read the rules No bumping posts .
Wipe phone flash stock rom and test fails you need a service centre .
Click to expand...
Click to collapse
hello! sorry about early bumping.
with wiping phone flash stock rom <<-- how do i do this? and not corrupting any vital stuff inside my phone. I heard that EFS is a very important.
update:
if you're talking about these:
1.wipe data/factory reset
2. wipe cache
3. wipe dalvic cache
i did those stuff 10x already...
PROBLEM is INTERMITTENT: sometime it will connect just fine, sometimes not. << how am I going to work around this problem?
is there any way to low level diagnose the wifi system?
could it just be the hardware? - if hardware then there shouldn't be times that it can connect fine
could it be the software? - where to start?
How i wish someone can help me fix all these intermittent problems I am encountering with the wifi.
EFS etc its all in the Faqs and Guides .
JJEgan said:
EFS etc its all in the Faqs and Guides .
Click to expand...
Click to collapse
Hi, i have been reading those giudes, and i havent encountered any special method of wiping as what you say... I have used odin to flash like 5x already, got into cwm wipe data, wipe cache and wipe dalvik cache...
I already have a backup of my efs in .img format, using terminal.
Can you walk me through?
Wipe phone flash stock rom and test .
I believe flashing via odin using stock samsung rom will wipe the flash. Is that correct? Or do you mean to say format the flash chip first before flashing with odin?... Im not quite sure how to do that.
Right now im using my celfone posting this message. Its just that this fone doesnt connect to other access points where the rest of wifi devices connects fine.
if you are referring to this guide:
http://forum.xda-developers.com/showthread.php?t=1911726
i have done this many times already.
Sent from my GT-I9305 using Tapatalk
I have tried alot of different ROMS already and the problem persists.
Could this be hardware related?
are there people whos got similar issue?
It can connect to wifi right away if you're 2 meters line of sight of the router/access point.
bercerobry said:
I have tried alot of different ROMS already and the problem persists.
Could this be hardware related?
are there people whos got similar issue?
It can connect to wifi right away if you're 2 meters line of sight of the router/access point.
Click to expand...
Click to collapse
Yes it could be.My phone had intermittent wfi and data.Turns out it was an "RF loopback timeout" problem.Needed fixing at service centre.HTH.

Error while searching for networks

Hi, I'm having the problem that, although the mobile networks icon is turned on, my phone can't connect to any Network operator and instead it shows me the message " Error while searching for networks" when I try to search for them.
I have already flashed the stock lollipop firmware and CM 12.1, but the problem doesn't disappear.
Has anybody encountered this problem, or know that I should do to solve it?
Any help appreciated!
My current os:
Build number: cm_titan-userdebug 5.1.1 LMY48G d4581317ff test-keys
Kernel version: 3.4.42-g46e9a65
I am having the same problem. Can anyone get the answer.

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