[Q] Wifi Problem and fix - Galaxy Tab Q&A, Help & Troubleshooting

Hi, My galaxy tab has the problem where it cannot reconnect to my home network due to the tab remembering the first IP address the network gave it. So when the network tries to assign a different one it doesn't connect as it will only work if the network assigns the IP address that the tab saved. I have searched for many fixes, but none of them work. One is where you access the DHP file by rooting and delete it to force the tab to take a new IP address from the router. Another is using a static WIFI address. I'm at a loss because there isn't much information of this over the internet. So my question is, how can I fix this, and how can I fix it permanently? Thanks a lot.

Bmanride said:
Hi, My galaxy tab has the problem where it cannot reconnect to my home network due to the tab remembering the first IP address the network gave it. So when the network tries to assign a different one it doesn't connect as it will only work if the network assigns the IP address that the tab saved. I have searched for many fixes, but none of them work. One is where you access the DHP file by rooting and delete it to force the tab to take a new IP address from the router. Another is using a static WIFI address. I'm at a loss because there isn't much information of this over the internet. So my question is, how can I fix this, and how can I fix it permanently? Thanks a lot.
Click to expand...
Click to collapse
are you still on android froyo by any chance?
you could put a dhcpcd.exit-hook script in /etc/dhcpcd with the following lines:
rm /data/misc/dhcp/dhcp_list
rm /data/misc/dhcp/dhcpcd-eth0.lease
this fixed my wifi problems when i was still on froyo. tested on gingerbread and its working fine as well.

noxxious said:
are you still on android froyo by any chance?
you could put a dhcpcd.exit-hook script in /etc/dhcpcd with the following lines:
rm /data/misc/dhcp/dhcp_list
rm /data/misc/dhcp/dhcpcd-eth0.lease
this fixed my wifi problems when i was still on froyo. tested on gingerbread and its working fine as well.
Click to expand...
Click to collapse
I am on android froyo 2.2. But doesn't that do the exact same process as when I delete the files with supermanager? Thanks

Bmanride said:
I am on android froyo 2.2. But doesn't that do the exact same process as when I delete the files with supermanager? Thanks
Click to expand...
Click to collapse
It does but it does it automatically everytime you switch off your wifi.

Related

[Q] JP6 Wi Fi Obtaining Ip problem

Hi guys,
On jp6 rom I have a problem with the wi fi by stucking on Obtaining Ip. I try a factory reset works ok for 10 hours and after this same problem. The router is encrypted with wep key. I've removed the security from router side but still can't obtain the ip. At work it s a wi fi encrypted with wpa and works like a charm.
Have somebody else this issue? How can be fixed?
Thanks in advance!
Strange... I thought the problem is long gone since JPC. This is a bug in obtaining dynamic address, set static address instead in W-Fi Settings -> Advanced.
Alte.78 said:
Strange... I thought the problem is long gone since JPC. This is a bug in obtaining dynamic address, set static address instead in W-Fi Settings -> Advanced.
Click to expand...
Click to collapse
I already try this without success. The wifi is stuck on Obtaining Ip.
Nobody can help me
PLEASE ANY SOLUTION I've got this aswell
i had the same problem. But I FIXED it.
I just set my wifi to use static IP.
Hope this works for you.
jp6 has horrible wifi problem.
you should really update your firmware.
I think jp6 is what I got when I first bought sgs.
update to froyo or jm8.
no more wifi problem for me.
I had to get the Wifi Radar app in order for me to connect, no matter what I did it would not connect for me, a phone thats a few €100 I`d expect something as simple as that not to be a hassle..
I fixed it when using this method
http://forum.xda-developers.com/showthread.php?t=827988&page=2
Post no.17

[Q] Wi-Fi problem

I have a problem with my wifi namely SGS does not want to connect to any unsecured network. It only says "obtain an IP address from the network." My Froyo version 2.2. I would be grateful if someone knew the solution to this problem without the need to restore factory settings.
I have come across a better solution in another post but couldn't find it so for the time being...
go to /data/misc/dhcp remove all files and reboot
see if it works
did not help
Have you tried to force an IP address?
Go to wifi settings > advance and manually assign an IP address
Sent from my GT-I9000 using XDA App
so I tried. I would add that the android 2.1 everything was fine.
try lowering you're wifi password. From Wpa2 to wpa or web(and disable mac adres filter) in you're router. That did the trick 4 me. Its not a nice solution but hey it works
That's how it works, but what about the free hotspots? Next is to get the IP address of the Web

[Q] Captivate Wifi Issue

Hi All,
I have a weird problem with my captivate of not connecting to my home network. Let me start by telling that I have searched the solutions and tried doing everything except full factory reset. I have rebooted the phone, done reset on my router (Wifi was working just fine earlier.. so I think settings was not an issue. But I still did it), I removed the file data/wifi/bcm_supp.conf and let it regenerate it. Captivate displays "Obtaining IP Address" and it just stays there. I also see that IP address is being assigned to captivate in my router
Captivate is rooted stock Froyo
Router security: WEP
form the Wifi list, I found one unsecured network and captivate connects to that router just fine (signals are very week though...). I tried removing the security on my router but it still stuck on "Obtaining IP address".
Can you please please help me?? As I mentioned earlier, It was working just fine and suddenly stopped working two days back.
These all app updates are eating away my limited data of 200M.
Thanks a millian.
What's your router model ?
What channel are you running on ?
Are others routers close to you running on the same channel ?
Have you tried another channel ?
Did you try WPA2 ?
Could be incompatibility with your router. That happened to me before with my old router. It didn't work with some cell phone wifi devices.
Sent using XDA App
Try using the app "FXR." I had the same issue a couple times and this app seemed to fix it. It took a few tries though. I think it might be a router problem. I use the Linksys wrt54g.
You could also try assigning a static IP address to your device on the router side, and then telling your phone to use that address. I've used that in the past to some success.
As a test, have you tried (temporarily) disabling the security on your router to see if it connects?
I have a similar problem since upgrading to the past 3 nightlies. My phone sees and connects to my home network and says it has strong signal, but when I try to access Market or Internet it says there's a network error and I can't get thru. My two computers (one hard wired and one wi-fi) don't seem to have any problem hooking in to the internet, just my SGS1
Moozh1 said:
Try using the app "FXR." I had the same issue a couple times and this app seemed to fix it. It took a few tries though. I think it might be a router problem. I use the Linksys wrt54g.
Click to expand...
Click to collapse
Does the 'FXR' app set up IP addresses?
The App didn't work for me. I tried that yesterday. I was reading the similar problems on some other site yesterday and I found the following that solved my issue. In case someone like me still struggling with the WiFi problem.
Delete file data/wifi/bcm_supp.conf
Delete file /data/misc/dhcp/dhcp_list
reboot the device and it will create these files again and you will have to enter your WiFi password again in order to connect.
I am really glad that my WiFi is working back again.
FYI, I'd change the WEP to WPA.
cappysw10 said:
FYI, I'd change the WEP to WPA.
Click to expand...
Click to collapse
Where do you go to change that setting? I've been all thru the wi-fi settings and advanced settings, but didn't see anything that referred to WEP or WPA.
Just realized we're talking now about the router, not the phone, duh!
Yes, I certainly need to bump up the security settings on my router.
cappysw10 said:
FYI, I'd change the WEP to WPA.
Click to expand...
Click to collapse
22andy2 said:
The App didn't work for me. I tried that yesterday. I was reading the similar problems on some other site yesterday and I found the following that solved my issue. In case someone like me still struggling with the WiFi problem.
Delete file data/wifi/bcm_supp.conf
Delete file /data/misc/dhcp/dhcp_list
reboot the device and it will create these files again and you will have to enter your WiFi password again in order to connect.
I am really glad that my WiFi is working back again.
Click to expand...
Click to collapse
I used root explorer, but could not locate the files you mentioned. Directories were there just not files. I'm still exploring the router side. Thanks for the info tho.

[Q] Wifi Problems in Samsung Galaxy Tab - Wifi after Gingerbread Upgrade

After i upgraded my galaxy tab wifi version with gingerbread using EU firmware, the "Wifi Turn On/Off" is behaving erractically. The Wifi won't turn off on trying to do so and will stay in status "Turning Off" all the time. After restarting the device, it will reboot with the WiFi turned on.
I tried factory reset and that sorted out the problem, till i configured the wifi connection and the problem returened back.
I any body else facing the same problem? Is it a problem with the firmware?
akashrana said:
After i upgraded my galaxy tab wifi version with gingerbread using EU firmware, the "Wifi Turn On/Off" is behaving erractically. The Wifi won't turn off on trying to do so and will stay in status "Turning Off" all the time. After restarting the device, it will reboot with the WiFi turned on.
I tried factory reset and that sorted out the problem, till i configured the wifi connection and the problem returened back.
I any body else facing the same problem? Is it a problem with the firmware?
Click to expand...
Click to collapse
Hmmm... some ROM's seem to have a problem with routers. Check for The Overcome Wifi-fix...
akashrana said:
After i upgraded my galaxy tab wifi version with gingerbread using EU firmware, the "Wifi Turn On/Off" is behaving erractically. The Wifi won't turn off on trying to do so and will stay in status "Turning Off" all the time. After restarting the device, it will reboot with the WiFi turned on.
I tried factory reset and that sorted out the problem, till i configured the wifi connection and the problem returened back.
I any body else facing the same problem? Is it a problem with the firmware?
Click to expand...
Click to collapse
Your rom XWJQ8???? Using Wifi patch: forum.xda-developers.com/attachment.php?attachmentid=848206&d=1326067286 Install from CWM.
mycso said:
Your rom XWJQ8???? Using Wifi patch: forum.xda-developers.com/attachment.php?attachmentid=848206&d=1326067286 Install from CWM.
Click to expand...
Click to collapse
Not sure about the ROM version, but i downloaded the firmware form here http://www.sammobile.com/firmware/?page=3&t=3&o=1&m=GT-P1010&r=1#.
How do i check tht.
In addition what are the steps to be follwoed to apply the fix through CWM?
akashrana said:
Not sure about the ROM version, but i downloaded the firmware form here http://www.sammobile.com/firmware/?page=3&t=3&o=1&m=GT-P1010&r=1#.
How do i check tht.
In addition what are the steps to be follwoed to apply the fix through CWM?
Click to expand...
Click to collapse
I could have written that no P1000.
p1010 wifi problem I can not help. sorry...
This could be linked to the known DHCP lease problem.
Check the DHCP setting's on your router and ensure that the lease duration is something valid i.e. not infinity; set the lease duration of DHCP on your router to *anything* less than infinity.
phlooke said:
This could be linked to the known DHCP lease problem.
Check the DHCP setting's on your router and ensure that the lease duration is something valid i.e. not infinity; set the lease duration of DHCP on your router to *anything* less than infinity.
Click to expand...
Click to collapse
There is no exact option of lease time in the router, but something called 'Idle Time' was there which had a value of zero, which i have changed to 999. Even after that the problem still exists.
Hi all,
i do have exact the same problem. I can not set a DHCP lease time on my router.
Does anoyone have a solution for this Problem with the Galaxy Tab P1010?
Firmware: 2.3.6
Kernel: 2.6.35.7-CL882382 [email protected] #1
Builsnumber: GINGERBREAD.XXKPI
Thanky ou in advance.
N1v4
same issiu here..
I am using a GT-P1010 and am on the KPI firmware. I have been having intermittent connectivity issues which may or may not be related to what is being discussed here. Nevertheless I am going to try the following the next time my Wi-Fi drops out. You might want to do the same. While these may different issues, it might be worth a shot. Here is some information I have recently found.
Delete dhcp_list
Set Static IP
Basically (as mentioned by another poster above) these Tab's have issues when routers assign IP addresses using DHCP. Apparently the TAB retains the last known assigned IP address and try's to use it all the time. If your device was asleep and another device on your network grabbed that IP address, you are in for issues.
The dhcp_list file contains that information and if deleted the TAB will attempt to actually acquire a new IP address (lease) from your router. You must be rooted to delete that file.
The other option its to set a static IP. This will work great as long as you don't travel to another location and need to connect to another access point. If you do, you will need to return to the DHCP method of IP acquisition and your problems could return if you stay on that network long enough.
Lastly as discussed in some of the other forum posts from my second link above (great information in that entire thread btw) you can access your router and set it to assign the same IP address to your tab all the time. This will affectively insure that no other devices are able to acquire that address and you should be good from that point forward. As all routers are different I will not provide details of this method but it IS the BEST of all three options in my opinion. Basically you will need the mac address of your tab and it's current (working) IP address. Then set your router to assign that IP address to that MAC address.
Please post back if any of this works. Thanks!
Hi all.
I have set the IP Address in the Tab to a fix value and reserved the same IP Address in the Router for the TAB.
This does not solve the problem.
I can use WiFi perfectly. But when i try to disconnect my device by shutting down WiFi the device is stuck. The Button for WiFi is described as off, but the Color is green. And i am not able to reconnect to WiFi.
After rebooting the device it starts with WiFi turned on. In most attempts after rebooting i am able to turn WiFi Off.
Regards
N1v4
n1v4 said:
Hi all.
I have set the IP Address in the Tab to a fix value and reserved the same IP Address in the Router for the TAB.
This does not solve the problem.
I can use WiFi perfectly. But when i try to disconnect my device by shutting down WiFi the device is stuck. The Button for WiFi is described as off, but the Color is green. And i am not able to reconnect to WiFi.
After rebooting the device it starts with WiFi turned on. In most attempts after rebooting i am able to turn WiFi Off.
Regards
N1v4
Click to expand...
Click to collapse
Yeah .. sounds like a totally different issue then mine. Sorry it didn't work for you.
I solved the problem by downgrading to Froyo 2.2.1. Now WiFi works properly. The only problem is now, that i can not find all Apps in the Google Market.
And i am not able to activate the Screen Lock functions. I can set a PIN for unlocking but nothing happens.....
n1v4 said:
Hi all.
I have set the IP Address in the Tab to a fix value and reserved the same IP Address in the Router for the TAB.
This does not solve the problem.
I can use WiFi perfectly. But when i try to disconnect my device by shutting down WiFi the device is stuck. The Button for WiFi is described as off, but the Color is green. And i am not able to reconnect to WiFi.
After rebooting the device it starts with WiFi turned on. In most attempts after rebooting i am able to turn WiFi Off.
Regards
N1v4
Click to expand...
Click to collapse
Hi.
I have the same problem, but it only happens when the wifi is open and has no password. If the wifi has password, it works fine.
My ROM is GINGERBREAD.XXKPG, 2.3.6.
Bye.

Wifi adhoc problem

I've recently upgraded my phone to cm10.1 and now i have a very big problem. I cant connect to my wifi adhoc that comes from my laptop.
Before when i was using cm10 i used the app called WiFiAdhocEnabler and it worked fine. Now on 4.2.1 i cant do the same.. i cant find the wifi network that are adhoc but i can find the others. Does anybody have ideea how can i solve this..?
Thank you very much for your help.
Regards,
cRyTek
edit wpa_supplicant.conf
I achieved the adhoc connection with the latest CM10.1 20130110-NIGHTLY
- Create a wifi connection with the adhoc connection information.
- stop wifi
- using a root editor edit the file "/data/misc/wifi/wpa_supplicant.conf.
in the corresponding wifi connection, add "mode=1" as in here:
"network={
...
ssid="<YOUR_ADHOC_SSID>"
mode=1
....
}"
- now you can reactivate wifi.
This work for me
Note:
- You should configure both the computer and the O2X ip with static information.
crytek1224 said:
I've recently upgraded my phone to cm10.1 and now i have a very big problem. I cant connect to my wifi adhoc that comes from my laptop.
Before when i was using cm10 i used the app called WiFiAdhocEnabler and it worked fine. Now on 4.2.1 i cant do the same.. i cant find the wifi network that are adhoc but i can find the others. Does anybody have ideea how can i solve this..?
Thank you very much for your help.
Regards,
cRyTek
Click to expand...
Click to collapse
Thank you for answer but i got a little problem. when i open /data/misc/wifi/wpa_supplicant.conf with root browser i cant find what u say. All i have is :
ctrl_interface=wlan0
update_config=1
device_name=star_open_eu
and some other things about device, lg..
Theres nothing about ssid. Did i got it wrong? Should i add all that thing in there :
"network={
...
ssid="<YOUR_ADHOC_SSID>"
mode=1
....
}"
That is because before editing the file you have to create the connection.
On the wifi connection page of the phone parameters, press "+" to create a new connection. Fill in your adhoc connection information.
Once it is done, you can the disable wifi and edit the file.
Note: I have succeed on doing adhoc connection only in "open" and "open WEP" security.
crytek1224 said:
Thank you for answer but i got a little problem. when i open /data/misc/wifi/wpa_supplicant.conf with root browser i cant find what u say. All i have is :
ctrl_interface=wlan0
update_config=1
device_name=star_open_eu
and some other things about device, lg..
Theres nothing about ssid. Did i got it wrong? Should i add all that thing in there :
"network={
...
ssid="<YOUR_ADHOC_SSID>"
mode=1
....
}"
Click to expand...
Click to collapse
thx.. i'll try
i did as you said and the phone connect to the netword for 2 seconds and then it stops.. It might be because i didnt do this:
Note:
- You should configure both the computer and the O2X ip with static information.
Click to expand...
Click to collapse
My laptop ip is dynamic and i don't know how to use a static one. When i create the adhoc netword i cant change anything about the ip.
Any ideea?
Search google with your os version and "static IP"
crytek1224 said:
i did as you said and the phone connect to the netword for 2 seconds and then it stops.. It might be because i didnt do this:
My laptop ip is dynamic and i don't know how to use a static one. When i create the adhoc netword i cant change anything about the ip.
Any ideea?
Click to expand...
Click to collapse

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