[Q] wifi fail with any rom except stock - AT&T Samsung Galaxy S II SGH-I777

I've done some searching but haven't been able to find a solution to this issue.
Basically, the wifi on my phone just 'dies' after a minute or so with any rom or kernel that I flash other than stock. It even dies after flashing CWM or DD/Siyah kernel onto stock rom.
Any ideas on why??? My Captivate was like a tank and stood up to all sorts of flashing abuse and bad flashes. It seems this sgs2 is similar...with the exception of the wifi. On all roms but stock it seems that if I disable the wifi, then re-enable it then it will work for a minute...then die again. very frustrating.
please give me some clues
Thanks,

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What router do you have? And what rom's have you tried?

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Have you tried using other modems for our phone? Just wondering if maybe your router only likes the stock modem and when you're flashing other roms, it might be changing you to a modem your router disagrees with. It's just a suggestion, trying to think outside the box. There are two sets of modem builds, just make sure you get the right ones for the right roms. Also try flashing the stock KH7 modem back over the custom rom. I'm no developer so WTF do i know. Just trying to help a brother out. Good luck.

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I've tried with both an Asus RTN12 as well as an older Airlink 101. Both B/G/N routers which I've tried the stock firmware as well as dd-wrt. They are setup using channel 1, WPAPSK/AES. Behavior is the same whether the router is set to 20Mhz or 40Mhz. Both routers are based off an RaLink chipset. I don't have a router based on Broadcom (yet).
As for Roms....
UnNamed
ICScrewD
ICS'd out
Coz
Serendipity

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By modem I assume that's listed as 'baseband' in the about section of the settings. Stock shows KH7. I've flashed the stock kk6 rom and just checked and it remains kh7 (flashed with Odin).
I did an OTA update to kk6 but neglected to check the modem that was installed with it.
Regardless, the wifi worked as designed under both older and newer stock roms.
I'll flash a rom this weekend and then flash modems to see if I can narrow it down. I'm in the process of moving so the next day or two are sort of out of the question

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I personally like WPA2 better (especially with dd-wrt), but to each their own. What do you have your wifi-sleep policy set to? (settings>Wireless->Wifi settings>Press menu button->advanced.)

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penguinlogik said:
I personally like WPA2 better (especially with dd-wrt), but to each their own. What do you have your wifi-sleep policy set to? (settings>Wireless->Wifi settings>Press menu button->advanced.)
Click to expand...
Click to collapse
Sorry, it is WPA2PSK, but I've tried both.
Wifi sleep policy is set to never.

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RE: WIFI
nst6563 said:
I've done some searching but haven't been able to find a solution to this issue.
Basically, the wifi on my phone just 'dies' after a minute or so with any rom or kernel that I flash other than stock. It even dies after flashing CWM or DD/Siyah kernel onto stock rom.
Any ideas on why??? My Captivate was like a tank and stood up to all sorts of flashing abuse and bad flashes. It seems this sgs2 is similar...with the exception of the wifi. On all roms but stock it seems that if I disable the wifi, then re-enable it then it will work for a minute...then die again. very frustrating.
please give me some clues
Thanks,
Click to expand...
Click to collapse
If your phone is a Samsung i777 AT&T model and you want to get
your wifi working properly then simply download UnNamed v2.2.1
custom rom which is the very best custom rom currently available
for our phones. The UnNamed rom also has superior battery life.
The UnNamed v2.2.1 Custom Rom is not only the most stable and reliable
custom rom but it's also the most aesthetically pleasing rom which is currently
available for our phones. (i777 AT&T)
Since you have tried so many things already be sure that before flashing
another rom that you go into settings>privacy and select "factory data reset".
Then be 100% sure that you have done a "wipe data/factory" reset using
CWM Recovery before flashing another custom rom.
After you flash the UnNamed rom you will no longer have any wifi problems at all.
Be sure that after flashing the rom you make a nandroid backup of the rom
before you install any apps and or before for who knows what god forsaken reason
you should want to change or flash a different kernel rather than leaving it alone
and use the excellent kernel which the rom comes with.
Good Luck!

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You sound like an advertisement for UnNamed
Seriously though...I have tried UnNamed from 2.1.1 to 2.2.1
ICScrewD from 1.4 to 1.6.1, etc.
Wifi completely breaks if I flash the CWM or any kernel over the stock. I've flashed so many roms, kernels, and modems over the past 2 weeks I couldn't even begin to count how many.

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Just out of curiosity, have you tried connecting to wifi on a different router, like at work or a friends house...? Have you tried resetting your routers? With all that you've tried, it's just strange that you still can't get a connection.

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nst6563 said:
By modem I assume that's listed as 'baseband' in the about section of the settings. Stock shows KH7. I've flashed the stock kk6 rom and just checked and it remains kh7 (flashed with Odin).
I did an OTA update to kk6 but neglected to check the modem that was installed with it.
Regardless, the wifi worked as designed under both older and newer stock roms.
I'll flash a rom this weekend and then flash modems to see if I can narrow it down. I'm in the process of moving so the next day or two are sort of out of the question
Click to expand...
Click to collapse
I intentionally left the baseband separate from my UCKK6+root package because people often want to run a different modem than system.
Flashing a new baseband will do nothing for wifi - everyone who tells you that is too accustomed to HTC phones where Qualcomm AMSS runs EVERYTHING.
It's strange if anything but stock fails for you... UCKK6 wouldn't surprise me because it has all sorts of weird BCM4330 (wifi/bluetooth) problems, but I haven't heard of wifi regressions with my kernel when flashed on UCKH7.
nst6563 said:
You sound like an advertisement for UnNamed
Seriously though...I have tried UnNamed from 2.1.1 to 2.2.1
ICScrewD from 1.4 to 1.6.1, etc.
Wifi completely breaks if I flash the CWM or any kernel over the stock. I've flashed so many roms, kernels, and modems over the past 2 weeks I couldn't even begin to count how many.
Click to expand...
Click to collapse
Yeah... It's a little annoying. Yeah, Unnamed is an excellent firmware, but "best" is a matter of taste. It's funny that he's pimping a firmware when the firmware dev almost blocked him for that damn penis-gecko.

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Jank4AU said:
Just out of curiosity, have you tried connecting to wifi on a different router, like at work or a friends house...? Have you tried resetting your routers? With all that you've tried, it's just strange that you still can't get a connection.
Click to expand...
Click to collapse
Logging into a router at work wont do any good since i work from home. the neareat open wifi network is out of range. I did log in to chic fil a once but unfortunately i dont remember the reaults....my mind was focused on lunch.
I have also reset both routers i have here. tried different firmwares foe the routers as well but got the same result...but both of my routers are based on ralink chipsets. two different ralink chipsets at that, but still made by ralink.

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Forgot to mention
nst6563 said:
You sound like an advertisement for UnNamed
Seriously though...I have tried UnNamed from 2.1.1 to 2.2.1
ICScrewD from 1.4 to 1.6.1, etc.
Wifi completely breaks if I flash the CWM or any kernel over the stock. I've flashed so many roms, kernels, and modems over the past 2 weeks I couldn't even begin to count how many.
Click to expand...
Click to collapse
I forgot to mention, before you flash the UnNamed v2.2.1 custom rom
be SURE to flash the ODIN based CWM Recovery kernel, not the
CWM flashable kernel to start with.
(because who knows whiich kernel you have now since you have flashed so many)
Below is the ODIN flash CWM Recovery kernel which you should have
flashed in the first place when coming from the stock to custom rom.
MODDED SGH-I777_ClockworkMod-Recovery_5.0.2.3.tar:
http://www.multiupload.com/QQKN7NJAFT
Good Luck!

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Try resetting the security type in the wireless modem/ router to a personal wireless security and try it out. I had some issues with Wifi but after the resetting of the router, the wifi has been working fine.

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In the advanced wifi settings, enable up to channel 14, and set your router to channel 11+40mhz (150mbps) and see if that works. Channel 1 might have too much interference for this phone or something... not sure.

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Correct me if I'm wrong but aren't channels beyond 11 for out of US region?
Sent from my SAMSUNG-SGH-I777

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From Wikipedia "In the USA, 802.11 operation in the channels 12 and 13 is actually allowed under low powered conditions. "
And its not like the FCC drives around looking for routers broadcasting in those channels, our routers are too weak to broadcast that far. But you're just enabling up to channel 14, doesn't mean that you're going to use it.

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WiFi Fail MAC address Bluetooth address Unavailable
I am basically at the same point..WiFi Fail..It will scan and then turn back off. Started off with a stock phone..Followed the customizations steps..No problems reading the Flash Counter..Ran step 2c..It worked Great..passed..had UCKH7 but had no WiFi..Did the wipe data/factory reset as mentioned in other threads and WiFi returned..Then I did the OTA update to UCKK6 and WiFi was still working. So I downloaded Mobile Odin Pro from the market so I could complete step 3a. I had already extracted the zImage from Entropy's 1208 DD and placed it on my sd card. Ran MO on the phone selected the zImage and it ran flawlessly. I am still rooted and have CWM 5.0.2.7..but the WiFi shuts off again shortly after turning it on..So I tried the wipe data/factory reset again but it did not help this time. As far as I can tell everything else works great on the phone, calls, texts and so on...But after looking at some of the about phone settings..I noticed that both the MAC address and Bluetooth Address lines show unavailable...and I think that is why the WiFi shuts back down shortly after turning it on..Now I was going to move onto step 4 and flash UnNamed ROM for practice and then go back to stock using the guide..but I was wondering if I missed something important that caused the WiFi issue

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What are the first 6 characters of your mac address? (on stock) At this point... I'm thinking they might have changed the wifi chip or something...

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penguinlogik said:
What are the first 6 characters of your mac address? (on stock) At this point... I'm thinking they might have changed the wifi chip or something...
Click to expand...
Click to collapse
Currently under... Settings..About Phone..Status..Wi-Fi MAC address & Bluetooth address show "Unavailable"
But since I have an access list enabled on my router...I would say my MAC address started with 04:46:65 I'll be able to verify that when I get it back.
I'm going to try another wipe and a different Entrophy Kernel and see what happens. I know I can get WiFi back by going through the steps again and I enjoy all the tinkering..so I just wanted share some of the stuff I was seeing.