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[Q] Weird WiFi Issue Using Custom ROM?

So just picked up a MyTouch 4g and so far I love it! Glad I switched from being a Windows Mobile user to a die hard Android now! Anyhow so the first thing I did when I got home was of course root it and found a custom ROM for it. I went and got [ROM][07/04/11] Virtuous Unity Sense 3.0 based on Pyramid [1.27.0] and finally got it flashed after some tinkering. Thank god I used linux before! So the phone seems to work fine, but today I noticed some annoying issues with it. I upgraded the sd card to 16gb from 8gb and had to reloaded a few of my games, no biggie, everything works now. But the WiFi is starting to piss me off. At work the wifi shouldn't be an issue, it is slow, but works. The phone just seems to keep dropping connection for no reason, then says emergency calls only and then picks back up the WiFi, etc. Does this while WiFi calling is enabled, now when I disable that, the WiFi still has issues like it won't keep a good signal. Hell I am sitting beside the router and still the signal goes up and down. I know the wifi works because I am using it thru my laptop to type this atm (using ubuntu 11.04 of course!) I have done some searching thru out the forums and noticed some others complaining about the same issue. I am asking because didn't know if this was ROM related, or maybe needed a different radio like my HTC tilt 2 used when I had it? Any ideas or maybe point me in the general direction?

WiFi Issue

Flashed 3-669-SuperScaryStable on top of nightly cm7 212. Subsequently, WiFi could not maintain a lock. The phone would find the wifi network get a lock for a moment and immediately lose the lock. Get a lock, lose the lock. . . . Settings I tried were Scary and smartass governors 245mhz - 1.2ghz
Anyway, flashed nightly 220 (back to regular cm7 kernel)-- back to wifi working fine.
Maybe I looked too quickly but all I saw in the development thread pertained to Super Scary not working with sense roms.
Hmmmm.

sdk234 said:
Flashed 3-669-SuperScaryStable on top of nightly cm7 212. Subsequently, WiFi could not maintain a lock. The phone would find the wifi network get a lock for a moment and immediately lose the lock. Get a lock, lose the lock. . . . Settings I tried were Scary and smartass governors 245mhz - 1.2ghz
Anyway, flashed nightly 220 (back to regular cm7 kernel)-- back to wifi working fine.
Maybe I looked too quickly but all I saw in the development thread pertained to Super Scary not working with sense roms.
Hmmmm.
Click to expand...
Click to collapse
Download wifi analyzer from market and figure out what is conflicting with your wireless router.
toastcfh's stock kernel is considered the most stable kernel because it's been tested and proven to work with everything time and time again.
However, I have no problems with wifi on Scary's kernel. Again, I'm not saying there are no issues because when I'm at work I do have issues but I have wifi issues on my laptop with the wifi here as well, they have way too many APs broadcasting on the same channel (4-5 APs for channel 3, 4-5 APs for channel 7, 4-5 APs for channel 11) so I seriously doubt it's a problem with the kernel but more a problem with your local wifi router configuration.
Run wifi analyzer and it will answer this question.

Am I right to assume that I should run the test you recommend after flashing Scary and recreating the problem - cause on Toastcfh's kernel there is no problem connecting to that router whatsoever?

sdk234 said:
Am I right to assume that I should run the test you recommend after flashing Scary and recreating the problem - cause on Toastcfh's kernel there is no problem connecting to that router whatsoever?
Click to expand...
Click to collapse
You can run the same test on toast's kernel.

Well, you know, maybe it's just all about the goofy phone itself after all.
Trying to do the test (following a reboot) I'm just about sitting on top of the router (that I've confirmed is working) with wifi enabled on the shift and all I'm getting is "not in range." Can't get the wifi icon to even display at the moment.
Thanks for the help.

sdk234 said:
Well, you know, maybe it's just all about the goofy phone itself after all.
Trying to do the test (following a reboot) I'm just about sitting on top of the router (that I've confirmed is working) with wifi enabled on the shift and all I'm getting is "not in range." Can't get the wifi icon to even display at the moment.
Thanks for the help.
Click to expand...
Click to collapse
Open ROM manager and run fix permissions and reboot again, then turn on wifi and open wifi analyzer again.

VICODAN said:
Open ROM manager and run fix permissions and reboot again, then turn on wifi and open wifi analyzer again.
Click to expand...
Click to collapse
Did it. But seems that I've got the same problem. Connects for a little bit and then disconnects. It just can't maintain the wifi link. Doesn't stay up long enough to even get a screen shot of wifi analyzer.
Maybe I should try another nightly, stable cm7 or sense?

sdk234 said:
Did it. But seems that I've got the same problem. Connects for a little bit and then disconnects. It just can't maintain the wifi link. Doesn't stay up long enough to even get a screen shot of wifi analyzer.
Maybe I should try another nightly, stable cm7 or sense?
Click to expand...
Click to collapse
You can't take screenshots on wifi analyzer. Just analyze it yourself. How many APs are broadcasting on the same channel as you? More than 1? Change the channel.

There are two and they don't overlap. One is centered over channel 6, the other (weaker one) centered over channel 11. But the problem is that the parabolas that show the signal strength disappear pretty quickly and the wifi indicator at the top of the phone just disappears. What do you think about the possibility that I should switch to a different nightly or sense?

sdk234 said:
There are two and they don't overlap. One is centered over channel 6, the other (weaker one) centered over channel 11. But the problem is that the parabolas that show the signal strength disappear pretty quickly and the wifi indicator at the top of the phone just disappears. What do you think about the possibility that I should switch to a different nightly or sense?
Click to expand...
Click to collapse
Ignore the APs disappearing. It sounds like your router is either a piece of junk or misconfigured.
Try configuring the wireless radio on channel 1.

Shouldn't be a piece of junk. wasn't that cheap ;-)
Works fine with my computer anyway.

sdk234 said:
Shouldn't be a piece of junk. wasn't that cheap ;-)
Works fine with my computer anyway.
Click to expand...
Click to collapse
That means nothing.
What kind of router is it? Manufacturer / Model number?
Also please remove ScaryKernel from the title of this thread since we have proven this problem happens on toastcfh's kernel as well.

VICODAN said:
That means nothing.
What kind of router is it? Manufacturer / Model number?
Also please remove ScaryKernel from the title of this thread since we have proven this problem happens on toastcfh's kernel as well.
Click to expand...
Click to collapse
Netgear N600 WNDR3400
Why's it meaningless that I have no trouble with WIFI on laptop?

sdk234 said:
Netgear N600 WNDR3400
Why's it meaningless that I have no trouble with WIFI on laptop?
Click to expand...
Click to collapse
Netgear sucks. Do yourself a favor and go buy a Linksys WRT610N or one of the new models.
Other than that all I can tell you is switch your wireless channel.
It's not a problem with the phone or the kernel, it's the router.

VICODAN said:
Netgear sucks. Do yourself a favor and go buy a Linksys WRT610N or one of the new models.
Other than that all I can tell you is switch your wireless channel.
It's not a problem with the phone or the kernel, it's the router.
Click to expand...
Click to collapse
Ok - I'll try switching the channel first ;-)
Also - going to find some other routers to test the phone against
Thanks for all the time spent troubleshooting here

Ok - Vic - here's the end of the story, since you've been good enough to work with me on this - -
Installed and ran an app called "FXR WiFi fix and rescue" from the market. Didn't appear to help.
So, restored nandroid of Mik 1.6 and WIFI WORKS PERFECTLY once again. Strong, stable, consistent lock on the Netgear signal (and another close-by router as well.) Problem solved for me.
Not going to make any rash accusations about what the culprit may be which caused wifi to fail for me on cm7.
I'm happy I've confirmed it's not the phone.
Maybe my shift just likes MikRoms and Supreme Sense and was punishing me for experimenting!!

sdk234 said:
Ok - Vic - here's the end of the story, since you've been good enough to work with me on this - -
Installed and ran an app called "FXR WiFi fix and rescue" from the market. Didn't appear to help.
So, restored nandroid of Mik 1.6 and WIFI WORKS PERFECTLY once again. Strong, stable, consistent lock on the Netgear signal (and another close-by router as well.) Problem solved for me.
Not going to make any rash accusations about what the culprit may be which caused wifi to fail for me on cm7.
I'm happy I've confirmed it's not the phone.
Maybe my shift just likes MikRoms and Supreme Sense and was punishing me for experimenting!!
Click to expand...
Click to collapse
Glad to hear it but I'm still wondering.. did you even TRY changing the channel?
I get 20+Mbps over Wifi on 2.4ghz.

I was planning to try changing the channel, but you know what -- just happened to restore Mik 1.6 first.
And the result was dramatic. On the nightly CM7 the graphs displayed on wifi analyzer weren't stable at all. Even when the parabola's appeared for a few moments, their height was shifting up and down. It was like the signal strength was fluctuating.
On Mik's rom the height of the parabolas is higher than I saw before and just stays put.

sdk234 said:
I was planning to try changing the channel, but you know what -- just happened to restore Mik 1.6 first.
And the result was dramatic. On the nightly CM7 the graphs displayed on wifi analyzer weren't stable at all. Even when the parabola's appeared for a few moments, their height was shifting up and down. It was like the signal strength was fluctuating.
On Mik's rom the height of the parabolas is higher than I saw before and just stays put.
Click to expand...
Click to collapse
Did you do a wipe data/factory reset when flashing CM7? Did you wipe dalvik? Did you wipe cache? Did you wipe battery stats? Did you flash the latest CM7 nightly and then right after that did you flash google apps 828 and new talk?
Not wiping properly before flashing a new rom could cause weird issues like that.

VICODAN said:
Did you do a wipe data/factory reset when flashing CM7? Did you wipe dalvik? Did you wipe cache? Did you wipe battery stats? Did you flash the latest CM7 nightly and then right after that did you flash google apps 828 and new talk?
Not wiping properly before flashing a new rom could cause weird issues like that.
Click to expand...
Click to collapse
Yes-wiped that & more - prboy trained me well
After wiping according to steps on mik's forum (& battery stats) , flashed cm7 and google apps and talk just as you instructed
Sent from my PG06100 using xda premium

[Q] WiFi issues on almost all ROMs - MB525 red lens

Hi All,
Since I got my DEFY I have WiFi problems. This issue only exists when WiFI has WPA/WPA2 PSK authorisation.
It is going like this: I connect over the wifi. Then connection works fine, I am able to browse www, check the emails etc, and after few seconds, minutes the connection stops working but still exist. I try to reconnect several times. Defy shows that is connected but nothing works fine. Internet apps or Market gives a message like the time is up, connection lost. I have to forget the conection in settings or reset device to get it working properly, but not for long.
And the thing is that there is only ONE ROM that works fine with WiFi on my DEFY. This is Cyanogenmod-7.1.0-RC1. Other ROMs have same issues. Doesn't mater if it is Cyanogen mod 7.1 stable or any MIUI or MS2Ginger. I tried almost all roms but nothing helped. So I had to go back to CM7.1.0-RC1.
Do you know what should I do to make WiFi working fine on other roms?
greetings,
Gregory
p.s.
Please, just don't tell me that I should change authorisation on WiFi router. This is not a solution for me, because I use WiFi in a lot different places.

Same problem
Hi,
I have the same problem with my Defy since a few months, no solutions!

I have the *EXACT* same issue. Was about to roll back to stock and send it in for repair, glad I found your post! I'll install the ROM you suggested and keep hoping this gets fixed

just fixed my wifi issue for the second time. If there are to many remembered networks no more wifi. You can turn it on but it cant find any. delete all remembered networks and back on line. that is the only conectivity problem I have ever had after months of cm7

wilson1813 said:
just fixed my wifi issue for the second time. If there are to many remembered networks no more wifi. You can turn it on but it cant find any. delete all remembered networks and back on line. that is the only conectivity problem I have ever had after months of cm7
Click to expand...
Click to collapse
I think that's a different problem than we're having. It is finding the network just fine (and connecting) in our case. It's just that internet connectivity refuses to work after a few minutes, forcing us to disconnect-reconnect to get it working again
@OP: Thanks a lot! The ROM you mentioned does indeed not have this problem. It's not as stable as some of the more recent roms though, think I'll still be forced to revert to stock

i had exactly that problem with my first defy, no solution man, i send it to warranty and they give me other

maybe changing the regulatory domain channels from 11 to 14 could help. this option is hidden by default, you have to enable it: change the value of 'ro.debuggable' from 0 to 1 in /system/bootmenu/config/default.prop, save and reboot. after that, the regulatory domain setting will be shown in settings/wireless/wifi/advanced. simply change it to 14 channels.
Sent from my MB526 using xda premium

@OP: Apparently the issue still occurs on the version you mentioned as well...just happens less often.
cdlq456 said:
i had exactly that problem with my first defy, no solution man, i send it to warranty and they give me other
Click to expand...
Click to collapse
Hmm..weird thing is, I never had this issue on the stock ROM
zakoo2 said:
maybe changing the regulatory domain channels from 11 to 14 could help. this option is hidden by default, you have to enable it: change the value of 'ro.debuggable' from 0 to 1 in /system/bootmenu/config/default.prop, save and reboot. after that, the regulatory domain setting will be shown in settings/wireless/wifi/advanced. simply change it to 14 channels.
Sent from my MB526 using xda premium
Click to expand...
Click to collapse
Thank you for the suggestion! Just tried this, didn't resolve the issue sadly
I'm looking into rolling back to a stock Froyo rom but the information is scattered all over the place, I'm having a hard time figuring out if it's possible, and if so, how ;/

Anyone have any more ideas? ;/

darkdevil1 said:
Anyone have any more ideas? ;/
Click to expand...
Click to collapse
OK, maybe I just passed the signpost but... do you still have the problem if you set your "select network" setting to 3G only?
I ask because (and it may be different on my phone as I am USA, stock ROM with wifi calling) if you go into the INFO menu > phone information > set preferred network type, mine toggles between three radio preferences: "GSM only" (when wifi is active), "GSM auto (prl)" and -- if I set for 3G Only, "WCDMA only".
I have noticed that when "select network" setting is at automatic (or 2G only) it often has trouble transitioning from cell to wifi. And, when wifi is an issue, I find that "GSM auto (prl)" has been selected (which on my USA phone prevents wifi connection). However, it seems to have no issue whatsoever transitioning from "WCDMA only" (3G only) to "GSM only", which on my phone then allows wifi connection. Again, this is a wifi calling phone so may be different.

Yep, same here BUT ! I get root browser, found my build.prop and change wifi chanells first time for 14 and it didnt help so i try other and my wifi works in 100% with 13 chanells. Try it

This is a widely know problem, many people are affected more or less. I'm also having nerve-blowing times with wifi sucking all over... Stock Froyo (and now Cyanogen 7.2) seems to be a bit more stable, sometimes everything is fine for a few hours, all downloads go lightning fast - and then suddenly things are screwed up. I tried a lot of MIUI releases as I like it most. MIUI seemed the most problematic so far. I don't know what is the cause, new stock Motorola Gingerbread ROM versions also have this issue (except one I think - look it up in the forum).
Agree, bothering with the router is not a solution. My Nokia E51, my EeePC, my girlfriend's Omnia and Lifebook - all work perfectly with all the four routers we use frequently. Not a single glitch - everything is stable and nice, except Defy.
I don't think is a hardware problem with certain devices, it seems more to do with the way Defy handles wireless connections.
Anyway, it's frustrating but CM7.2 and CEE Froyo gives a bit better experience than others.

masspl said:
Yep, same here BUT ! I get root browser, found my build.prop and change wifi chanells first time for 14 and it didnt help so i try other and my wifi works in 100% with 13 chanells. Try it
Click to expand...
Click to collapse
You mean changing ro.wifichannels to 13?.
Don't do that, my phone wouldn't boot any more. Had to restore nandroid BU...

darkdevil1 said:
You mean changing ro.wifichannels to 13?.
Don't do that, my phone wouldn't boot any more. Had to restore nandroid BU...
Click to expand...
Click to collapse
I didnt know that... it help me but i see for other its bad

Mine boots fine...

VTomi1975 said:
Mine boots fine...
Click to expand...
Click to collapse
Strange, perhaps I messed up something else accidentally then. Has it resolved your problem?

My mate do same think but he leave space after "13" and there was some problems with boot after this ;/ So maybe u do same ... Im sory if i make some problem

darkdevil1 said:
Strange, perhaps I messed up something else accidentally then. Has it resolved your problem?
Click to expand...
Click to collapse
No, problem still persists. Sometimes it works flawlessly for hours. Then... suddenly screwed :S In some cases a "switch wifi on/off" workout can help but not always.

VTomi1975 said:
No, problem still persist. Sometimes it works flawlessly for hours. Then... suddenly screwed :S In some cases a "switch wifi on/off" workout can help but not always.
Click to expand...
Click to collapse
Same. Thanks for your response.
I've rolled back to 2.2 and no Wifi issues so far. I'll just stay on this stock ROM.

darkdevil1 said:
Same. Thanks for your response.
I've rolled back to 2.2 and no Wifi issues so far. I'll just stay on this stock ROM.
Click to expand...
Click to collapse
Which Froyo version do you use? A few times this wifi-bug occured also under Froyo. I'm thinking about going back myself, as Froyo is the only acceptable release to record hiccups-free videos

[Q] Wifi acting weirdly CM7 stable

A few days back I flashed CM7.1 stable from the cyanogenmod website. I am having some weird issues with the wifi. The internet suddenly stops working even though I am connected to the internet and I can use the internet on my laptop. When I switch Wifi off and back on again the internet starts working again. Is this a bug in CM7? BTW, I am running the Froyo kernel on this device and this is a T-Mobile UK device.

I was having wifi problems on CM7 until about a week ago.
I then started from scratch and flashed nordic sbf then the latest maniac CM7.2.RC1
Switched baseband to my region (UK) and it's been rock solid ever since, not dropped a single connection.

sheikhumar93 said:
A few days back I flashed CM7.1 stable from the cyanogenmod website. I am having some weird issues with the wifi. The internet suddenly stops working even though I am connected to the internet and I can use the internet on my laptop. When I switch Wifi off and back on again the internet starts working again. Is this a bug in CM7? BTW, I am running the Froyo kernel on this device and this is a T-Mobile UK device.
Click to expand...
Click to collapse
Me too Have This Problem When im in CM9 Im Solved it Enable AirPlane Mod For 2 Mins and Then Disable It Most Probably it will Solve It...If Still it doesn't Help then remove wifi password if you have any remove it and then try again it will work...

Thank you guys for your advice. Ill wait around for the next stable update for this device and then see if the issue has been resolved. I thought maybe my defy had a problem.
Sent from my MB525 using XDA

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Moving to Q&A

My wifi network vanished after updating to CM7

Hello!
I've just installed CM7 in my Defy. It's working very well, except that my home wifi network is not appearing in the available networks list!
This happened too with a friend of mine that come to my place some weeks ago, with a Sony/LG dunno-the-model also running ICS under CM. But I didn't look into the problem as I he would only be staying a couple of days.
Now I noticed the exact same thing happened to me. And my network was working perfectly with the stock 2.2.1.
Anyone have any idea of what's happening? lol

igorsantos07 said:
Hello!
I've just installed CM7 in my Defy. It's working very well, except that my home wifi network is not appearing in the available networks list!
This happened too with a friend of mine that come to my place some weeks ago, with a Sony/LG dunno-the-model also running ICS under CM. But I didn't look into the problem as I he would only be staying a couple of days.
Now I noticed the exact same thing happened to me. And my network was working perfectly with the stock 2.2.1.
Anyone have any idea of what's happening? lol
Click to expand...
Click to collapse
In the wifi settings, is there an "avoid poor connections" option? Donno for sure because haven't used CM7, but in CM10 is like that.
Regards,

wurealm said:
In the wifi settings, is there an "avoid poor connections" option? Donno for sure because haven't used CM7, but in CM10 is like that.
Regards,
Click to expand...
Click to collapse
No =(
There's only something related to wifi sleep policy, MAC and fixed IP.

Looks like the problem is related to Wifi Channels (CM doesn't search after channel 11), as I've seen in CM forums.
I'll test it by the night and I'll post here if it works.