Develop Bugs

WiFi hangs when switched on

Hi folks,
Since last thursday I've got a problem with my WiFi on my wildfire. Every time I turn on the WiFi (via not. bar or settings) the little box is ticked but it does not scan or anything. A couple of seconds later I get the message that the WiFi process in the settings app is not responding together with the option to kill the process. Is my WiFi broken now? Or is there a fix?
Thanks in advance
P.S. I'm using CM7 7.1.0

Try flashing the latest nightly or the 7.1.0.1 update.
http://forum.xda-developers.com/showthread.php?t=1143125
Sent from my HTC Wildfire using xda premium

Scratch0805 said:
Try flashing the latest nightly or the 7.1.0.1 update.
http://forum.xda-developers.com/showthread.php?t=1143125
Sent from my HTC Wildfire using xda premium
Click to expand...
Click to collapse
It doesn't work. When I boot after applying the update after the bootanimation there's just a black screen. It hangs. I pulled the bat and tried it again but the same...

Usually this can be solved by wiping the dalvik cache, have you tried that?

henkdv said:
Usually this can be solved by wiping the dalvik cache, have you tried that?
Click to expand...
Click to collapse
I managed to update CM7 to 7.1.0.1, but Wi-Fi is still not working! It just hangs after switch-on. And the weirdest thing of all is that it just happened, I dind't change anything or install any new apps...

Try reflashing the radio?

3xeno said:
Try reflashing the radio?
Click to expand...
Click to collapse
Reflashed the radio, still no progress It just wont find any wifi networks and after leaving the settings app the WiFi is turned off automatically (or the app hangs and the same happens) Any other suggestions?

By the way, WiFi-Tethering does work. Still confused about this weird problem :S

Try this in a root shell (enter "su" at the prompt) with wifi enabled:
ip link set up eth0
Though the name might be different on your rom, it's commonly named "wlan0" (eth0 is usually a physical ethernet device). You can find out by running
ip link show
With wifi disabled and enabled, see what new device comes up or disappears. It doesn't hurt to test a name, as long as it isn't "lo" (the loopback device).
After setting the link state, re-scan for APs.

henkdv said:
Try this in a root shell (enter "su" at the prompt) with wifi enabled:
ip link set up eth0
Though the name might be different on your rom, it's commonly named "wlan0" (eth0 is usually a physical ethernet device). You can find out by running
ip link show
With wifi disabled and enabled, see what new device comes up or disappears. It doesn't hurt to test a name, as long as it isn't "lo" (the loopback device).
After setting the link state, re-scan for APs.
Click to expand...
Click to collapse
Could you explain these steps? I'm not so familiar with terminal inputs and especially IP adresses. Whats more strange is that my Wi-Fi disconnects automatically when leaving the Wi-Fi menu and that it doesn't show my saved accesspoints (once connected but not now). Isn't this a software problem?

tobitronics said:
Could you explain these steps?
Click to expand...
Click to collapse
Sure, here's the html formatted manual page. A relevant excerpt:
ip link set - change device attributes
dev DEVICE
DEVICE specifies network device to operate on. When configuring
SR-IOV Virtual Fuction (VF) devices, this keyword should specify
the associated Physical Function (PF) device.​
up and down
change the state of the device to UP or DOWN.​
Click to expand...
Click to collapse
When the device is down, it won't scan. Some ROMs have a different tool installed as /system/bin/ip though, just typing "ip" will tell you.
tobitronics said:
Whats more strange is that my Wi-Fi disconnects automatically when leaving the Wi-Fi menu and that it doesn't show my saved accesspoints (once connected but not now).
Click to expand...
Click to collapse
The saved networks aren't shown when wifi is turned off. It likely fails to enable the device and does this before attempting to read the saved networks, as this should never happen it might be related to the radio firmware on your phone. See this thread for the list of radio firmware versions. As for disconnecting when you leave the WifiSettings activity, wait a bit longer to see if it stays connected. There's definitely no intentional disconnect in the onPause handler.
tobitronics said:
Isn't this a software problem?
Click to expand...
Click to collapse
I see no reason to believe the contrary.

henkdv said:
Sure, here's the html formatted manual page. A relevant excerpt:When the device is down, it won't scan. Some ROMs have a different tool installed as /system/bin/ip though, just typing "ip" will tell you.The saved networks aren't shown when wifi is turned off. It likely fails to enable the device and does this before attempting to read the saved networks, as this should never happen it might be related to the radio firmware on your phone. See this thread for the list of radio firmware versions. As for disconnecting when you leave the WifiSettings activity, wait a bit longer to see if it stays connected. There's definitely no intentional disconnect in the onPause handler. I see no reason to believe the contrary.
Click to expand...
Click to collapse
I've tried your steps. When setting the IP link to up after switching on WiFi and then enter 'show' i get a whole page of numbers and complicated text, but in each line the State is specified as 'DOWN' or 'UNKNOWN'. It also says something about a loop? When I leave the terminal then to check if WiFi is still on, I find it turned off. When I turn it back on and then let the terminal show, sometimes I get 'DORMANT' and sometimes I get 'DOWN'. I also tried your suggestion about leaving the client on, it stays on for about a minute before it automatically disconnects or gives me the message that the system app is not responding. My radio is already up to date (I even reflashed it twice). And what was that link 'WiFiSettings activity'. I came to a website with lots of code and got immediately confused . I hope this problem can be solved....

tobitronics said:
When setting the IP link to up after switching on WiFi and then enter 'show' i get a whole page of numbers and complicated text, but in each line the State is specified as 'DOWN' or 'UNKNOWN'.
Click to expand...
Click to collapse
This is the RFC2863 state of the interface which is seldom relevant, the actual link state is between < and >.
tobitronics said:
It also says something about a loop?
Click to expand...
Click to collapse
That would be the loopback device. It is always present and its parameters are the same across nearly all Linux kernels, one might be funny and try to change the mtu, queueing discipline or address but it's pointless to do so.
tobitronics said:
When I leave the terminal then to check if WiFi is still on, I find it turned off. When I turn it back on and then let the terminal show, sometimes I get 'DORMANT' and sometimes I get 'DOWN'.
Click to expand...
Click to collapse
According to the documentation, DORMANT means
Interface is L1 up, but waiting for an external event, f.e. for a protocol to establish. (802.1X)
Click to expand...
Click to collapse
This could indicate a problem with wpa_supplicant rather then the radio firmware. Try to connect to an open AP such as the ones at the local Bakker Bart, NS station, McDonalds or T-Mobile shop.
tobitronics said:
I also tried your suggestion about leaving the client on, it stays on for about a minute before it automatically disconnects or gives me the message that the system app is not responding. My radio is already up to date (I even reflashed it twice). And what was that link 'WiFiSettings activity'. I came to a website with lots of code and got immediately confused .
Click to expand...
Click to collapse
It is the actual source code to "Wi-Fi settings" where you normally see the list of networks.

Thanks for your explanation. So what should I do/try now? I was thinking about reinstalling the settings.apk and settingsprovider.apk ....
Sent from my HTC Wildfire using XDA App

Like I said, try an open 802.11a/b/g access point.

henkdv said:
Like I said, try an open 802.11a/b/g access point.
Click to expand...
Click to collapse
I tried that at the McDonald's and it didn't want to search for available networks, so I couldn't connect

Go to settings > Wireless & Networks. Disable this option
Mobile network
Use phone for data connection when Wi-Fi is unavailable
It should change to
Mobile network
Connect to the Internet

Try going to /data/misc/wifi and rename the wpa_supplicant.conf to wpa_supplicant.conf.bak and try again, the system will recreate the file.
Sent from my HTC Wildfire using XDA App

Takudenatsu said:
Try going to /data/misc/wifi and rename the wpa_supplicant.conf to wpa_supplicant.conf.bak and try again, the system will recreate the file.
Sent from my HTC Wildfire using XDA App
Click to expand...
Click to collapse
IT WORKSSS!!!! Thank you all for your help. That such a small little text file could cause such a large annoying problem. I hope it won't happen again...
Sent from my HTC Wildfire using XDA App

could you write how?

[Q] [HELP]My Kindle Fire Won't Turn Wifi On

last night I was reading online comics and it suddenly not respond so I force it restart and it was worse. My kindle cannot recognize my touching.
It is strange that TWRP still works. Restoring doesn't helps, too.
So I wipe it all(except for sdcard) and install various cm9 and cm7 with corresponding kernels from hashcode with no luck. Cm9 is ok but without wifi. Cm7 just wont respond.
Also I tried using TWRP to go back to pure stock and wifi still not working. So I redo all the root, twrp again.
Finally I fix permissions and install cm7 aka now it's screen recognize my touching but the wifi still cannot be turned on.
Is it possible wifi chip has been broken?
Any one can help me, THANKS!?

hey everyone, do u have any suggestions......
now, as long as I open wifi it goes dead. I don't know what to do. Is it possible that due to heavy use the chip gets break down?

I was wondering what remains the same after I flash roms. Because installing zip has formatted boot, data and system.
I hard off the device when the wifi went wrong. And the application in which led to this situation cannot be reinstalled(install said OK but openning it the screen was black, still responding to button savior).
So maybe the problem lies in the internal storage that is unchangeable. Any one helps!? Or should I contact amazon CS?

Half of the old apk is probably left in data/app
Happened to me once.
Sent from my E10i using XDA

aloy99 said:
Half of the old apk is probably left in data/app
Happened to me once.
Sent from my E10i using XDA
Click to expand...
Click to collapse
But why the wifi still cannot be turned on? yes, it is when I using the app the wifi connection seems to be unstable, and I pressed the power button for 20 seconds.
Thanks for your reply.

would try to clean up the wifi configuration:
turn wifi off
look for /data/misc/wifi/wpa_supplicant.conf
open the file and delete everything except the first two lines, they are:
ctrl_interface=tiwlan0
update_config=1
Click to expand...
Click to collapse
this is for stock rom - for cm7 it has to be simmilar
turn wifi on again
hope this helps ...

b63 said:
would try to clean up the wifi configuration:
turn wifi off
look for /data/misc/wifi/wpa_supplicant.conf
open the file and delete everything except the first two lines, they are:
this is for stock rom - for cm7 it has to be simmilar
turn wifi on again
hope this helps ...
Click to expand...
Click to collapse
Thanks all the same.
I used root explorer to search for wap_supplicant.conf since it's not in that folder and delete everything except the first two lines. (forget to mention that my wifi just shows turning on and I can't do anything, flash new roms won't help.)
Then I reboot it the result remains same.......

did you try to restart your router ?
because i have this sometimes with the stock rom - wifi tries to connect and can't - all my other devices work fine - i use to reboot to router and the kf is connecting immediately again

b63 said:
did you try to restart your router ?
because i have this sometimes with the stock rom - wifi tries to connect and can't - all my other devices work fine - i use to reboot to router and the kf is connecting immediately again
Click to expand...
Click to collapse
I'm sure it has nothing to do with my router. because I live on campus and use school wifi. wifi is in the state of turning on since booting. regardless of flashing new roms.
thanks for your reply.

just closing out all known issues ...
but nearly running out of ideas at this point
maybe something on your sdcard partition ? - i know it sounds crazy but i had a case where the fresh installed rom did not start until he copied the whole sdcard partition to computer as a backup and deleted everything (besides .android_secure and twrp folder)

b63 said:
just closing out all known issues ...
but nearly running out of ideas at this point
maybe something on your sdcard partition ? - i know it sounds crazy but i had a case where the fresh installed rom did not start until he copied the whole sdcard partition to computer as a backup and deleted everything (besides .android_secure and twrp folder)
Click to expand...
Click to collapse
I can only think of files remain unchangeable when flashing roms or wifi chip burned(hope not).
Anyway idea about the internal files with respect to wifi issues?
BTW, I didn't find the half installed app or any other files in data/app

ｔｕｒｌｙ２２１ said:
Anyway idea about the internal files with respect to wifi issues?
Click to expand...
Click to collapse
no - sorry - maybe do a logcat and look for something that gives a hint in the right direction

b63 said:
no - sorry - maybe do a logcat and look for something that gives a hint in the right direction
Click to expand...
Click to collapse
actually I'm just a noob. I don't know how to do a logcat and how to find the problem.

as you can't download it from the market, attached here is a logcat program
install it and you'll see a lot of debug lines - be shure to make or let make the kf a wifi connection attempt - save the log and attach it as .txt file to the thread - i'll take a look if i can see something to track down your problem

the thing is the wifi is turning on by default. no matter what I do. do u mean use some app which needs wifi?

b63 said:
as you can't download it from the market, attached here is a logcat program
install it and you'll see a lot of debug lines - be shure to make or let make the kf a wifi connection attempt - save the log and attach it as .txt file to the thread - i'll take a look if i can see something to track down your problem
Click to expand...
Click to collapse
it seems like the wifi is still turning on so I just open catlog and wait a few seconds and save it.

puh - was a long one - did'nt find something that will bring you further
03-18 18:43:55.148 I/SystemServer(1447): NetStat Service
03-18 18:43:55.148 I/SystemServer(1447): NetworkManagement Service
03-18 18:43:55.156 I/SystemServer(1447): Connectivity Service
03-18 18:43:55.156 I/ConnectivityService(1447): hostname has been set: cm7
03-18 18:43:55.171 I/WifiService(1447): WifiService starting up with Wi-Fi enabled
Click to expand...
Click to collapse
means the service starts
03-18 18:47:56.273 I/GoogleSearch(1655): Not connected to network.
Click to expand...
Click to collapse
tells us no news ...
and force closes a bit later
but there is never a connection attempt - strange ...

now I wonder which files are associated with wifi status in internal storage. some files must have been changed.

im kinda curious if you find a fix. ive been struggling with terrible wifi connection with my kindle. itll turn on, but it constantly turns off then after a while wont connect anymore. just says obtaining wifi then doesnt connect just shows saved wifi connection. im almost to the point of giving it away. not sure if amazon will help me out, and i wouldnt sell it to someone if i know it has wifi connection issues. i try to reset my router and it helps for a little bit, but then goes back to the issues i had

paranoid android85 said:
im kinda curious if you find a fix. ive been struggling with terrible wifi connection with my kindle. itll turn on, but it constantly turns off then after a while wont connect anymore. just says obtaining wifi then doesnt connect just shows saved wifi connection. im almost to the point of giving it away. not sure if amazon will help me out, and i wouldnt sell it to someone if i know it has wifi connection issues. i try to reset my router and it helps for a little bit, but then goes back to the issues i had
Click to expand...
Click to collapse
seems like we have different issues. Mine is turning on without any connection or list of available networks. Have you tried reboot, forget all networks or so on?

[TUT] how to fix wifi connection problem + enabling wifi adhoc connection

I've heard a lot of us sometimes got a problem with wifi connection. In my past experience, using this mod will solve these problem. it also enable internet sharing connection thru adhoc connection.
1. download this file.
http://www.mediafire.com/?n577pg7uf39w3xu
2. with root explorer open /system/bin. rename wpa_suplicant to wpa_suplicant.bak (for backup).
3. copy the downloaded file to /system/bin.
4. change the permission to 777 (rwxrwxrwx)
how to use adhoc connection (for windows user):
1. open network and sharing centre.
2. click setup new network. choose adhoc connection. press next
3. give name the new connection. choose no-authentificatin for the connection type.
4. clik OK. don't forget to enable internet connection share.
source:http://www.kaskus.us/showpost.php?p=638650846&postcount=3803
PS: this mod only work with open adhoc connection. you can't connect thru secured adhoc connection. no need to thanks nor press thanks button. all credits for original uploader/dev

thanks man!!!

You are so Good!!
One Thanks From Me

you're welcome

How to change permission?

Ali Asidqi said:
How to change permission?
Click to expand...
Click to collapse
Download Root explorer and then locate the file
long press and when a popup comes out browse for permissions..
change to the specified permissions by kurotsugi

if you use root explorer, press and hold the file, permission, tick all option

what's wifi adhoc for sir? is this for file sharing via wifi?

ad hoc?

if you have a laptop or a PC with wifi and already connected to internet, you can make an adhoc connection to share your internet connection with others. in normal situation we can't detect adhoc connection with our device. with this simple mod we can detect and connect to any unsecured adhoc connection.

????
I use connectify to share internet pc with wifi to my device..
Are this same purpose with different method???

yup...it has same purpose but different method.

kurotsugi said:
I've heard a lot of us sometimes got a problem with wifi connection. In my past experience, using this mod will solve these problem. it also enable internet sharing connection thru adhoc connection.
1. download this file.
http://www.mediafire.com/?n577pg7uf39w3xu
2. with root explorer open /system/bin. rename wpa_suplicant to wpa_suplicant.bak (for backup).
3. copy the downloaded file to /system/bin.
4. change the permission to 777 (rwxrwxrwx)
how to use adhoc connection (for windows user):
1. open network and sharing centre.
2. click setup new network. choose adhoc connection. press next
3. give name the new connection. choose no-authentificatin for the connection type.
4. clik OK. don't forget to enable internet connection share.
source:http://www.kaskus.us/showpost.php?p=638650846&postcount=3803
PS: this mod only work with open adhoc connection. you can't connect thru secured adhoc connection. no need to thanks nor press thanks button. all credits for original uploader/dev
Click to expand...
Click to collapse
We have a wifi here at office. I can connect to it but i can't browse. Our company uses a HTTP proxy. I know the username and password. Can you mod our sgy to use proxy with NTLM auhtentication?

go to setting. wifi. advance. you can set the proxy setting there.

kurotsugi said:
go to setting. wifi. advance. you can set the proxy setting there.
Click to expand...
Click to collapse
where is the input for the password?

if you're trying to acces a secured connection you'll get prompted to fill the password.

Hi, i tried following this guide but still no luck, can you please help me with my wifi problem, I am having a "wifi error" when I start my wifi, I am on a chobits 2.0 ROM with Merruk Kernel...

I never use merruk kernel for my daily use. you can try to use another kernel. if the problem still exist it means it was kernel bug.

Read-only
"Warning
You cannot paste here because the file system is read-only."
How can i paste the downloaded file on /system/bin?

falcon0809 said:
"Warning
You cannot paste here because the file system is read-only."
How can i paste the downloaded file on /system/bin?
Click to expand...
Click to collapse
Press button Mount R/W at top and it will show Mounted as r/w..
Sent from my GT-S5360 using xda app-developers app

[Q] Wifi Toggle Not Functioning (CM10)

Hey, I've got CM10 on my GS3. When I go under Settings, the Wifi toggle is set to Off and grayed out so I can't toggle it. When I go to Wifi, it just says "Turning on Wifi" indefinitely. I also have issues with wifi tethering sometimes.
Any solutions to this? I haven't been able to find any posts on it. I'd prefer not to reset to another ROM, but if there's no other ways to fix this, oh well.
Thanks!

Flash to a TW rom and see if it works.
If it doesnt work, try the following:
Diablo67 said:
So as to fix this problem,some people suggest to do a Factory reset.But, it is completely unnecessary.Instead you can try the following methods, which where tested by me successfully.
1. Dial *#*#526#*#* to reload the wifi driver.If it doesn’t work, restart your phone and dial it once gain.It will work for sure.
2.There is an app “Wifi-Fixer” from android market,which claims to be fix this problem.But seriously,it hadn’t worked for my mobile phone(Samsung Galaxy Ace).But,
if you are interested, can download and try it here.
For HTC users, I have a pretty good trick which works very well.
When you have obtaining IP address problem,
1.Turn off wifi.
2.Open “Allshare”, then you will be asked to connect to a wifi network.
3.Then select the wifi network that you need to connect from the list opened.
Magically, you will be connected without any extra effort.This works 100% sure without fail.
If that doesnt work try this:
1.Dial *#*#526#*#*.Then a message will be shown “Driver loading Successful”.
2.Now Start the WiFi, it should work.
If the message “Driver Loading Unsuccessful” is shown, follow these steps:
1. Dial *#*#526#*#* again and click options button on your phone.
2. Select Rx test.
3. Select Channel >9 .
4. Click Start and exit.
5 . After some time, turn on the wifi.It should work.
Click to expand...
Click to collapse
Sent from my PG06100

My phone won't even let me dial that, the code disappears the second I hit star the last time, not sure if it's supposed to do that. I'm gonna just try updating CM and see if that fixes it.

Elephone S7 fix the changing WiFi MAC adress

I have fixed mine.
There was no MAC address programmed to the device at factory. That's an omission. So the WIFI driver when activated after restart or by turning wifi off/on notices that and gives a temporary MAC address.
That address changes in the last bytes.
The solution is to write a WIFI MAC address with an appropriate tool. I did use SN_Writer just be careful to leave the other data alone.
I guess the same happens with the Bluetooth address but did not check that out yet.
0) Choose a valid MAC just look under settings the temporary one that your phone uses that's ok
1) Install VCOM Driver if you don't have it yet
If you use Windows 10 then you have to temporarily disable Driver Signature check since those drivers are not signed
Instructions and download here
http://forum.xda-developers.com/elephone-m2/help/windows-10-mtk-vcom-usb-drivers-32-64-t3267033
2) Download the SN_Writer I did use that one, password is mtk2000
http://mtk2000.ucoz.ru/down18/SN_Writer_Tool_v1.1648.rar
3) Download the right stock rom for your device you need the file which is named like the one I did use
APDB_MT6797_S01_alps-mp-m0.mp9_W16.48
4) Power off phone
5) In SN_Writer hit System Config uncheck everything and check Wifi Adress on the left side
In database file AP_DB use the file from 3)
That should do it.
Hit Start and entry the MAC just the digits no dashes etc.
Connect the phone while holding Volume Down.
That should do it.

Thanks for the write up, I got my S7 WiFi MAC address fixed now too, with your steps !!
Bluetooth appears already fixed/correct. (Also I haven't noticed my paired bluetooth devices loosing pairing..)

FunkiBluDawg said:
Thanks for the write up, I got my S7 WiFi MAC address fixed now too, with your steps !!
Click to expand...
Click to collapse
Great! Also good that Bluetooth is correct. Did not pair anything yet but good to know there won't be similar problems.

Idakis said:
I have fixed mine.
There was no MAC address programmed to the device at factory. That's an omission. So the WIFI driver when activated after restart or by turning wifi off/on notices that and gives a temporary MAC address.
That address changes in the last bytes.
The solution is to write a WIFI MAC address with an appropriate tool. I did use SN_Writer just be careful to leave the other data alone.
I guess the same happens with the Bluetooth address but did not check that out yet.
0) Choose a valid MAC just look under settings the temporary one that your phone uses that's ok
1) Install VCOM Driver if you don't have it yet
If you use Windows 10 then you have to temporarily disable Driver Signature check since those drivers are not signed
Instructions and download here
http://forum.xda-developers.com/elephone-m2/help/windows-10-mtk-vcom-usb-drivers-32-64-t3267033
2) Download the SN_Writer I did use that one, password is mtk2000
http://mtk2000.ucoz.ru/down18/SN_Writer_Tool_v1.1648.rar
3) Download the right stock rom for your device you need the file which is named like the one I did use
APDB_MT6797_S01_alps-mp-m0.mp9_W16.48
4) Power off phone
5) In SN_Writer hit System Config uncheck everything and check Wifi Adress on the left side
In database file AP_DB use the file from 3)
That should do it.
Hit Start and entry the MAC just the digits no dashes etc.
Connect the phone while holding Volume Down.
That should do it.
Click to expand...
Click to collapse
thanks a lot, worked like a charm. I really needed that fix as i put mac control on my router

Meta_maui_db_inconsistent
After:
"Connect the phone while holding Volume Down."
... just a message "META_MAUI_DB_INCONSISTENT" und the process break it
You have an idea what I can still check?

66krieger said:
After:
"Connect the phone while holding Volume Down."
... just a message "META_MAUI_DB_INCONSISTENT" und the process break it
You have an idea what I can still check?
Click to expand...
Click to collapse
Sorry for my late answer.
Double check step 3) you need the correct file from the correct stock rom for your device.
If that still doesn't work I would try reflashing the bootloader preloader (only) from stock ROM and try again.
It should work.

I'm not having any luck with my device on windows 10.
Whenever I try to connect my device to windows via usb, a pop appears - (USB device not recognized-the last USB device you connected to this computer malfunctioned ,and Windows does not recognize it) .
I've also tried to clean up my usb drivers and re-install MTK preloader.
Any advice how I might fix this?

File APDB_MT6797_S01_alps-mp-m0.mp9_W16.48?
Hi,
Where do I find the file "APDB_MT6797_S01_alps-mp-m0.mp9_W16.48"?
It's not available on Google.
Thanks!

Thank q so much .. Fix it.