Wifi problems with DD-WRT - Galaxy S II Q&A, Help & Troubleshooting

Sup internet,
right now i got XWLSN official rom with newest modem XXMS2 and philz kernel on my i9100.
Also i'm using a WDR4300 v1 which runs the newest DD-WRT software (r21153 ftp://dd-wrt.com/others/eko/BrainSlayer-V24-preSP2/2013/).
My problem is that I can use the Wifi with the phone for a while, but after some time the internet access is lost without warning.
The wifi symbol is still there and it's even in the wifi and the router DHCP client list, yet it can't connect to the internet.
I only notice that it's gone once i try to refresh the weather widget or use any other app that needs internet connection. At that point the requests usually just time out.
All my other hardware doesn't have this problem (smart tv, 2x notebook).
I also had a previous firmware (XWLS8 with earlier modem without philz kernel) and a previous DD-WRT build and experienced the problem as well with that setup.
Usually it happens after a couple of hours, everytime in the morning as well of course.
Seems to me like it tries to put wifi into sleep mode, doesn't completely cut the connection, but damages it in some other way.
Did anybody else have this experience? Any ideas on how to solve this problem? Should i try to give the phone a static internal IP perhaps?

yeah. same problem, but with openWRT - for all stock 4.1 roms so far. sometimes after a few minute of deep sleep, sometimes after hours, but like yours mine is always stuck in the morning. it does not matter whether 2.4 or 5ghz is used.
as a "workaround", i completely turned off wifi as my mobile contract has unlimited data.

Related

[Q] WIFI connection stops transfering data

Hi, is anyone has the same problem? When I'm connected at home to my Tenda router (WIFI b/g/n) after cca 30 min. my phone WIFI stops sending and recieving data, Skype is offline, etc... but WIFI in phone is stil switched on. After I switch WIFI off and back on (on my Samsung, not on my router), everything works good for a while and after cca 30 min. is situation the same. Is there in Samsung any WIFI sleep mode or something like that? Or some settings, which is not visible? Any other suggestions? Sorry for my poor English. Thanx in advance.
I'm having the same problem. But I did a factory reset and it works fine afterward.
And just few hours ago, I encountered this problem again. What did to get this error was, I pressed "on samsungapps" and it failed to update and thus results wifi connection stopping. What about you? Also my Kies air is not working.
are you guys sure you have wifi sleep policy set correctly? just to be sure, settings, wireless, wifi, menu button, advanced, wifi sleep policy to NEVER.
Yes. And also even if i manually disconnect and reconnect the wifi back. The data still doesn't come in. It is stated there as connected but no data at all.
Somehow Wifi keeps searching every few seconds, even thought it's connected.
This is bound to cost in battery life too.
I have reseted router to default settings, disabled n mode, disabled security (only mac filtering is on), disabled all unnecessary features and PROBLEM IS SOLVED !!! Thanx God Tomorrow I will experiment with router settings to know, what was causing this error ;-)
Well at least u're connected, I'm facing the same problem as the thread starter. No data flow at all. Browser showing me offline msg. I had the same problem on the 1st day with the phone after I woke up. previously playing with most of the default aps. So i'm not sure what went wrong, did a factory reset and it works fine.
Until, few hours ago, I tried my kies air which didn't work. Browser couldnt load the address given. And I thought i had an outdated kies air, so i went to click on samsungapps, which failed to update me. At that point the wifi is still working, i leave my phone for about 30 mins, and when i came back. The same problem which happened on the 1st day came back. I was hoping to find an answer here so I didnt do the factory reset it. On another note, the phone wifi works after restart, but wouldn't last.
Edit: The wifi works after i resetted my modem to default. oh well. at least that solved it.
lukecz said:
I have reseted router to default settings, disabled n mode, disabled security (only mac filtering is on), disabled all unnecessary features and PROBLEM IS SOLVED !!! Thanx God Tomorrow I will experiment with router settings to know, what was causing this error ;-)
Click to expand...
Click to collapse
Hi,
Did you find out what setting was causing the connection issue? I also have this problem with my Tenda router. I thought it might be the wireless N, but disabling that doesn't fix it. I have a wireless distribution system set up with other tenda routers so didn't want to disable all the settings to troubleshoot if i can help it!
Thanks
spen2 said:
Hi,
Did you find out what setting was causing the connection issue? I also have this problem with my Tenda router. I thought it might be the wireless N, but disabling that doesn't fix it. I have a wireless distribution system set up with other tenda routers so didn't want to disable all the settings to troubleshoot if i can help it!
Thanks
Click to expand...
Click to collapse
I have the same problem, my router is N and the conection between SGS2 and my router is bad. Any idea?
Same problem here, I'm running WZR-AGL300NH in access point connected to my Ubuntu Server. Everything else works in the house just fine but SG2 stops transmitting data after a while.
I recently upgraded to KF1 firmware (and unknowingly wiped out whole phone, being on the bleeding edge and that didn't seem to help.
I would very much appreciate all tips because this problem is very annoying!
Additional Info:
- Buffalo is running latest firmware
- Authentication WPA2-PSK
- Encryption AES
paranoidi said:
Same problem here, I'm running WZR-AGL300NH in access point connected to my Ubuntu Server. Everything else works in the house just fine but SG2 stops transmitting data after a while.
I recently upgraded to KF1 firmware (and unknowingly wiped out whole phone, being on the bleeding edge and that didn't seem to help.
I would very much appreciate all tips because this problem is very annoying!
Additional Info:
- Buffalo is running latest firmware
- Authentication WPA2-PSK
- Encryption AES
Click to expand...
Click to collapse
Same symptoms here. Cisco DDR2200. WPA2 PSK. Haven't tried fiddling with the router yet.
This seems to be a common problem. Anyone knows of a definitive fix?
Bump...I have the same problem and the issue persists even after i reset the phone
Sent from my GT-I9100 using XDA App
Glad I found this, thought it was the ROM I had flashed to the phone (which is VillainROM)
I keep losing connection from my phone via wifi like everyone else in this thread
edit: I've just assigned my phone an IP address via my routers settings and I can connect to the net again
Also when it wasn't working, I couldn't ping the phone. When I assigned the IP just now I still couldn't ping it.
When I did a tracert to it, I could get to it when the IP was assigned and when it wasn't.
I have no removed the assigned IP for the phone from the router. Wifi connection is still working after disconnecting/reconnecting wifi on the phone.
I can also now ping the phone, where as before it was getting timeouts.
Also when it wasn't working the first time when I did a tracert it was showing up as HPsomething (didn't make note of the numbers)
this time when it is working it's just showing up as the IP address when doing a tracert.
Another update:
Just checked my printer, it has an IP address manually set on it, which at one stage when the phone wasn't working for internet it had the same IP as the printer, hence when tracert'ing it I was going to the printer instead of the phone and getting the HP etc back.
When it wasn't working at that time and looking at my routers DHCP list, it had the MAC Address of the phone against the IP that the printer has....
So I've got some issues with how my own network is setup ^_^ which looks like is causing me grief.
So the issue is with DHCP? Setting a static IP fixes it? I'll have to try, but I doubt this is a problem with the network, as all my other devices use DHCP without this problem.
I have the exact same problem!!
It's really annoying.
i was having problems with wifi too.. it keeps scanning and checking, etc, signal dropping for no reason..
fixed mine..well for me it worked
backup ur phone ( i dont take responsibility if ur phone catches fire or dies or chases u around )
u need to be rooted
download FXR WiFi fix and rescue from market
and just run the app.
now my wifi signal stays constant speed and i get good speeds
alternatively try
WiFi Fixer
both of them will cause high battery usage..i think since it keeps the signal at maximum.. so only enable wireless when i need it or use juice defender or green power.
greenpower seems great. using this at the moment

[Q] WiFi on, connected, full strength and not sending anything.

So I have my Fascinate running CM7 with the Glitch Kernel, no OC, just for the stock UV, the problem I have is that I can connect to WiFi, everything seems fine and then a few minutes later everything stops loading, as if there was no connection. turning off WiFi and turning it back on helps about 80% of the time but still an issue, the reason this is so big is that at my house we have no reception at all, Verizon sent us a Network Extender but it simply does not work on any phone and I know for a fact that my Network is fine. (We have twin N600s one routing one access point) Additionally the issue is at the local college as well. Any help? Is there an issue with CM7 or the Glitch kernel?
I am having the exact same problem. For example, market will stick at "Loading..." while on wifi but when I turn wifi off, my 3g connection will load market fine. It's so weird because I have full wifi signal and it is definitely not my router. It didn't start until I flashed the glitch kernel. Has to be something there. Maybe there is a workaround?
Im running glitch v13 and wifi works great. sometimes after a reboot ill have to toggle it off/on...
iliketrains said:
I am having the exact same problem. For example, market will stick at "Loading..." while on wifi but when I turn wifi off, my 3g connection will load market fine. It's so weird because I have full wifi signal and it is definitely not my router. It didn't start until I flashed the glitch kernel. Has to be something there. Maybe there is a workaround?
Click to expand...
Click to collapse
I had that Market problem and it disappeared when I got a new router. A full reset/wipe of router may have fixed it also. Happened on 2 CM7 phones (Droid2 and Fascinate), but not a stock 2.3 Droid2.
On my CM7 Fascinate, I usually also have to toggle wifi after reboot.

[Q] Wifi sharing error after 40 minutes

Hi everyone,
I have the following problem:
I turn on WiFi sharing, and connect to it with my PC (Win 7). After a while (40-60 minutes) the sharing stops. The blue icon stays in the notification bar and my PC keeps reporting "connected", but nothing goes through. I cannot ping the internet, and sometimes not even my phone (sometimes pinging 192.168.43.1 works, sometimes not). I run Gingerbread 2.3.4.
If I turn off WiFi sharing and try to turn it back on, it reports "Error" on the phone, but if I now try again it works flawlessly for another 40-60 minutes.
I tried Barnacle WiFi Tether (it was even more unreliable), and some other types of Tethering apps.
I don't want to use USB tethering, because sometimes I need to connect with more PCs.
Any solution?
Is that with continous use on wifi? I.e. is there any lengthy periods where you're not actually using data, like reading a document for 10 mins?
My wifi tends to drop the connection after x amount of mins idle, it will show connected also, but it has to be disconnected and reconnected to work again, unless im downloading continously or watching a video (not letting the wifi connection idle).
Its 'normal' from my experience.
One thing you can try however is go to settings --> wifi --> menu key --> advanced and set wifi sleep policy to Never, see how that works for you?
Hi!
No, actually I am playing League Of Legends (an online game) continuosly. The connection seems to hold on longer if I am just browsing the net, but eventually it always gives up.
It was not a problem with ICS 4.0.3, but there the 3G gave up and it was really hard to get the connection back, so it was even more unusable.
Did you try altering the wifi sleep policy? See if that helps
I think the Wifi sleep policy only affects normal Wifi usage where the phone is the client. Anyway, I checked and it is already set to "Never", as you suggested.
Update: I was using XWKI4 with Nimphetamine kernel until yesterday. I have tried KI4-CFRoot kernel too, but that wasn't any better. Finally, yesterday I updated to KL1 stock kernel. I changed only the kernel, so it is a KL1 kernel with an otherwise KI4 ROM.
The sympthoms seem to have disappeared now. WiFi sharing works flawlessly. Fingers crossed...

Problem with cm9 and wifi

Hi i went from stock ics on my ray to cm9 by followingnexact step by step guide provided by cm9. Used their kernel as well. Have never modded my phone before. Having a small problem with wifi though. After my phone has been asleep for a while, if i wake it up the wifi icon in status bar is no longer blue its a dark grey and i can no longer browse anything or use the internet. Ive tried rebooting. I did the whole wipe cache etc when installing cm9. In wifi settings in advanced ive also left the setting to "leave wifi on when sleep" checked. If i turn off and on the wifi connection the phone ofcourse is able to reconnect again the icon is blue and i can connect. It not jsut a one off thing its been happening since i isntalled the rom.
If i wakek from sleep a few minutes later i have no issue with wifi. Its only when its been sleep for a while do i have this issue.
Any solutions?
I have the exact same problem but for me it's even bigger, whenever i turn on wifi on my modem, i can connect to internet on my phone, but after awhile i lose my connection completely, on my phone and on my pc also, the only way to get it back is to reset my router and wait for like 5-10minutes...
dellboyan said:
I have the exact same problem but for me it's even bigger, whenever i turn on wifi on my modem, i can connect to internet on my phone, but after awhile i lose my connection completely, on my phone and on my pc also, the only way to get it back is to reset my router and wait for like 5-10minutes...
Click to expand...
Click to collapse
If its also an issue with your. Pc then your issue might be also the router.
My other devices actually work fine in my case its oky this phone that has issues. Macbook iphone ipad nexus s no problems with those.
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
illus4 said:
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
Click to expand...
Click to collapse
Your issue seems more severe than mine. Mine actually connects and works, just that when it wakes from long sleep it wont work until i turn off and on wifi.
I get this problem too, but my problem even worse than yours. My wifi lose it's connection after a while, but the icon on status bar shows it's connected, running ping test, browse, even play store can't be accessed. I pinged the router and got unreachable.
And yeah, this problem occurs when I'm using all ICS based rom..
Anybody has any idea if this is a known problem, or if its just us few having thisissue?
illus4 said:
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
Click to expand...
Click to collapse
I have same problem. I have SE xperia mini with CM9. WiFi worked fine until yesterday. Now phone can't connect to AP (full signal - try connect -> signal drops down), but sharing 3G internet over WiFi works fine. I cleared dalvik cache, but that didn't help.

[Q] Connection issues

Hey everyone, I got myself a Z2 recently and have been very happy about it for the most part. However, some things seem to not function a 100% the way it's supposed to.
Some times after it's been to sleep and I try browsing online with it using either 3g/4g or wifi the phone says it has a connection, but nothing loads. All I have to do to solve this is to refresh the wifi/3g connection manually, and then it works. It's rather annoying to always go through that procedure every time I want to use my phone, so I'm wondering is there anything I can do about this? Or anyone experienced anything similar?
Vegard
I have the same issue with WiFi while the phone sleeps or is active (no probs with mobile data though!), but I was not able to determine whether it's my router, the phone, or a combination of the two (though I have a hunch).
When I'm in my room which is unfortunately the farthest from the router, and the connection drops, my Z2 is not able to reconnect on its own. Have to disable/enable WiFi or else it's stuck in an infinite loop of connecting and obtaining an IP.
Now, I'm fine with a dropping connection occasionally given the distance and the... quality of my router. However, my laptop is able to reconnect automatically.
I have tried lots of possible solutions: WiFi sleep policy, static IP or DHCP, disabling/enabling WiFi optimisation or Auto-IP, switching WiFi channels, and various WiFi fixer apps. Nothing worked.
My guess? There is a bug in the stock firmware that makes the phone unable to reconnect if a connection is forcibly dropped . Pair this with a crappy router and you have a recipe for inconvenience.
Unfortunately, I have no spare router to confirm this, and with the bugs in CyanogenMod I am reluctant to flash for now.
Also, I am sure this is not a hardware fault of the phone in my case since I notice this behaviour at home in my network only.
Do you guys possibly know where I could find some logs related WiFi? I wanna get to the bottom of this.

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