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Following on from my investigations on why the SGS2 takes *so" long to re-establish a WiFi connection, it now seems part of the problem is a major delay in obtaining an IP address.
In another thread (I forget which one) it was suggested that slow WiFi could be caused by a router not being able to cope with 802.11b, g & n traffic at the same time, which got me thinking - what if I disable the n part of the WiFi on the phone to revert it to 802.11g - would this make acquisition time on an older router faster?
So - does anyone know which file / script etc. could be altered to keep WiFi enabled, but ONLY at 802.11g; not utilising 802.11n?
stuclark said:
Following on from my investigations on why the SGS2 takes *so" long to re-establish a WiFi connection, it now seems part of the problem is a major delay in obtaining an IP address.
In another thread (I forget which one) it was suggested that slow WiFi could be caused by a router not being able to cope with 802.11b, g & n traffic at the same time, which got me thinking - what if I disable the n part of the WiFi on the phone to revert it to 802.11g - would this make acquisition time on an older router faster?
So - does anyone know which file / script etc. could be altered to keep WiFi enabled, but ONLY at 802.11g; not utilising 802.11n?
Click to expand...
Click to collapse
Just a guess, but is likely a build.prop tweak
Is this a frequent problem ? Has never happend here
Sent from my GT-I9100 using XDA App
As I've said in my post on the general forum, I get a horrible delay every time I ask the phone to connect WiFi.
I've got the WiFi sleep policy set to "when screen turns off" to save battery power; and using the same router as on my SGS (hell, i can sit the phones next to each other to try this) I get the following:
Waking the SGS up from a sleep results in a delay of 1 or 2 seconds before WiFi connects.
Doing the same with the SGS2 results in a delay of up to 1 minute before WiFi will connect. (sometimes it can be seen to give up trying to acquire an IP address, then try again)
...so yes, may be a router issue, but clearly there's something different between the 2.3.3. on the SGS versus the 2.3.3 on the SGS2 as well.
You could just disable n mode on your router if you think mixed mode is slowing it down. Most new routers will let you choose which wifi modes to broadcast via their web interface. The best option would be to only use n if all your devices support n.
Sent from my GT-I9100
Router only supports g. I'm suspecting the phone looks to n first, hence my interest in disabling it.
stuclark said:
As I've said in my post on the general forum, I get a horrible delay every time I ask the phone to connect WiFi.
I've got the WiFi sleep policy set to "when screen turns off" to save battery power; and using the same router as on my SGS (hell, i can sit the phones next to each other to try this) I get the following:
Waking the SGS up from a sleep results in a delay of 1 or 2 seconds before WiFi connects.
Doing the same with the SGS2 results in a delay of up to 1 minute before WiFi will connect. (sometimes it can be seen to give up trying to acquire an IP address, then try again)
...so yes, may be a router issue, but clearly there's something different between the 2.3.3. on the SGS versus the 2.3.3 on the SGS2 as well.
Click to expand...
Click to collapse
quick side note, wifi sleep policy set to NEVER saves you much more battery power because when it switches over to 3g, 3g uses way more power than just leaving it on wifi. counter intuitive but true.
Have you tried hard coding an IP address on the S2?
And by Hard coding, he means manually setting a Static IP address and now allowing the DHCP to provide you an IP address each time. Although the IP will most likely be the same while using DHCP, it has to request and authenticate each time. Setting a Static IP address eliminates the process of "Asking" for a IP address each time.
when the phone scans and finds the ssid, as part of that scan it checks if the router supports b/g/n then will try to connect at the highest speed. If the router isnt n compatible it wont even try.
I don't want to give the phone a static IP as I regularly visit three or four different wireless networks and they don't all use the same IP range.
I do know how DHCP works, this isn't a newbie question.
It seems definite now, watching the phone, that it tries to connect once (presumably on n), fails, then re-connects (quickly) on g.
Of course, I'll be changing the router eventually; I'm just interested in what's going on first
stuclark said:
I don't want to give the phone a static IP as I regularly visit three or four different wireless networks and they don't all use the same IP range.
I do know how DHCP works, this isn't a newbie question.
It seems definite now, watching the phone, that it tries to connect once (presumably on n), fails, then re-connects (quickly) on g.
Of course, I'll be changing the router eventually; I'm just interested in what's going on first
Click to expand...
Click to collapse
Understand about leaving it set for DHCP. Trying a fixed IP as a test may tell you if DHCP is part of the delay. If the b/g/n search is that slow it would be useful if it could be configured more precisely.
Have you tried it using another router using only g? If n is available it connects quickly? Seems like others would have mentioned this if it is something with the phone as g-only networks are still common.
I too am interested in disabling 802.11n. wpa_supplicant keeps hanging on some wifi networks and I suspect it may be because of n.
Hey guys,
I have a problem with my wifi...
Here is the before: Wifi works about 70% of the time, occasionally the connection would be dropped (as in "no network access", it still said it was connected).
Here is what then happened (in that order): Wanted to find a less crowded channel and installed Wifi Analyzer. Quickly decided that Channel 1 would be cool, browsed to the router configuration on the Desktop machine (LAN connection), changed the channel. Back to home on Android (don't remember whether via the home or back button). Into settings to see whether I would have to rescan or whether it would pick up the change of channel itself. It couldn't connect... It scans and attempts to connect, but doesn't
What I tried:
I restarted the Galaxy. Still couldn't connect.
Deleted the connection and re-entered the passphrase. Still couldn't connect.
Uninstalled Wifi Analyzer. Still couldn't connect.
Restarted device again. Still couldn't connect.
(At some point during all this, probably quite early, the Wifi symbol also stopped showing up in the status bar. Doesn't appear no matter whether Wifi is on or off)
Switched back to the channel I came from. To no avail
Switched of encryption on the Wifi. Still to no avail
Any ideas as to what might have happened and, more importantly, how to fix it? As I said the connection itself has never been the most reliable, but this is a different league
Thank you everyone!
Sandro
If you haven't tried it yet, reset your router. That fixes the majority of Wi-Fi issues out there. If that doesn't work, it may be your router itself. Certain routers have more issues with mobile phones than others.
You may want to go to a friends house and try connecting to his router and see if you can troubleshoot and isolate the issue. Either way, best of luck...
Sent from my GT-I9000 using xda premium
Damn you sitecom router!!!
Alright, one thing I hadn't tried until now was to restart the router. That fixed everything including (for whatever reason) the lack of the Wifi symbol!!
So if that is possible feel free to delete this thread! I didn't find the option anywhere...
Sorry for the unjustified disturbance
Sandro
Sometimes when I wake my nook from sleep it wont connect to my wifi.
When i go to my Wireless settings, it shows that my WIFI is On but it it does not detect any networks(there are over 10 wifi networks in range (apt building)).
I go to turn wifi off and it grays out and I get a message that says "Unable to stop Wifi".
The tablet locks up and reboots. Has anyone else experienced this?
I am running sw ver 1.4.0 with the kill OTA procedure setup.
Rooted (used the Linux method)
apps list (excluding the default Nook Apps):
AdAway
Amazon Kindle
androidVNC
AppMenu
Amazon appstore
Blogger
Busybox
ButtonSavior
Car Home
Document Viwer
drocap2
Adobe Flash Player
Gmail
Go Launcher
Google+
GoWidget
HomeCatcher
Messenger
Google Music
NinjaMorph
Root Explorer
Superuser
Talk
Titanium Backup
mtemal said:
Sometimes when I wake my nook from sleep it wont connect to my wifi.
When i go to my Wireless settings, it shows that my WIFI is On but it it does not detect any networks(there are over 10 wifi networks in range (apt building)).
I go to turn wifi off and it grays out and I get a message that says "Unable to stop Wifi".
The tablet locks up and reboots. Has anyone else experienced this?
Click to expand...
Click to collapse
I have seen this once or twice. A router reboot can help a little, but it hasn't been enough of a problem for.me that I've tried to do anything else. All of my Android devices have had problems with my router now and again.
I dont think its my router. Ive got 3 Android phones, A kindle fire, 1 Asus Transformer, multiple laptops, Xbox 360's, wii and multiple IOS devices hooked up to my network and none of them have complained about my wifi being busted. The nook tablet is the only one doing this. My first nook tablet did do this at all. I am wondering if this one has a defective WIFI chip
Yes, I have this same problem on my home wifi.
But in my office, everything is ok.
I have had the same issue. I just reboot the NT. It happened this morning, it was charging overnight with the low battery warning comming on last night before charging. Perhaps that may have something to do with it. I'll try to see if it's on it's charger next time it happens.
I had issues with mine doing that somewhat often. It would even happen during use. I was non rooted with a couple of sideloaded apps. Finally I got fed up and took it in. They swapped me out for a new one and I've had zero issues since.
I was lucky in that both me and my wife got these and I had a point of reference. Her tablet had no wifi issues while mine did. That was what led me to believe there was a problem with mine.
If you keep having the issue, you might want to think of getting it replaced.
WiFi problems only on one router.. Connected - No internet.
The WiFi on my Rooted Nook tablet works great at home, at in-law's, at parents, at neighbors houses. But at church it would find the signal and accept the password then said - "Connected - But no internet". It had full bars. The IP address was some generic number with mostly zero's. I had access to two different iPhones at the time and they both worked and connected to the internet with appropriate sequential IP addresses. I rebooted the D-Link router and my Nook Tablet with the same results. Any Ideas??
bnjmnalan said:
The WiFi on my Rooted Nook tablet works great at home, at in-law's, at parents, at neighbors houses. But at church it would find the signal and accept the password then said - "Connected - But no internet". It had full bars. The IP address was some generic number with mostly zero's. I had access to two different iPhones at the time and they both worked and connected to the internet with appropriate sequential IP addresses. I rebooted the D-Link router and my Nook Tablet with the same results. Any Ideas??
Click to expand...
Click to collapse
Me thinks that your deity doesn't like the idea of you rooting B&N's device.
What are the IP addresses of the other devices, the NT doesn't like nonstandard network protocols.
NT reboot required to get WiFi working
I purchased two Nook Tablets for my kids. Both are rooted using Snowball-mod. Both typically work well, but then refuse to connect to my home wireless network after some time. I have several other laptops and PCs connected to the same WiFi network with no issues. Only the Nook Tablets are unable to connect (after several hours of use). Rebooting the Nook Tablet always solves the problem... until it happens again. I have not found a patter to this yet (i.e. what might be triggering the WiFi to stop operation). If anyone find a solution to this issue, I would love to know what is found.
Several of us have found WiFi will lock out when the device is in sleep mode. Killing WiFi prior to sleep seems to stop this mysterious behavior, for me anyway.
Swyped from my rooted BNTV250 using Tapatalk
Is it known whether a un-modified ("stock" B&N NT) also requires WiFi to be disabled before entering sleep mode? If this is not an issue with an un-modified Nook Tablet, then perhaps this issue can be corrected soon.
Hi all,
The NT does not support Channels above 11 on WiFI networks...so if you router is on Auto-mode, it might choose a channel higher than that...and puff...no net...
Also, I had a Netgear Router which had some WPA2 incompatiblities with my both my Blackberry and my NT. Flashing the Router's firmware, also solved my problem.
Hope my experience is helpful.....
Cheers,
Gizmo
Gizmo, thanks for the suggestions but I do not think this is a router channel issue. What is happening is that the NT WiFi seems to lock-up (possibly driver issue). Bringing up Settings and tapping to turn off WiFi results in a grayed-out WiFi toggle (not "Off" but inactive). Attempting to touch WiFi again after this produces a message similar to "WiFi is not responding" (I don't remember the exact message now). My routers are set with fixed channels 1 and 6 as well.
Hi, I'm sorry, but I'm having trouble getting WIFI to work on my NT. The thing is: it only works disabling the password on my home network! But I want to maintain a secure connection... Can someone helpe me? Thanks in advance!
waking the wifi
Don't know if I'm late or not, but I actually found a resolution to this issue by downloading an app from the Google Play store called Wifi Manager. It's free and as soon as you launch it, it'll instantly re-wake and reconnect your wifi within less than 1 second. It's not intended for that use but it helps big time!
When i downloading torrents using my android phone over the WiFi, its connection lost several times. My phone WiFi policy is "Keep WI-Fi on during sleep" as "Always". I use "Ttorrent" app client. Most of the time Ttorrent display "No suitable network" error. If i turn on the screen, problem not fix.
I have android 4.0.3 ROM and i connected my phone into my ADSL router, not a public.
Are there any solution for me?
Thanks!
Did you rule out the signal strength and wifi network quality? It might just be that the connection is flaky. One way to test is just sitting close to the access point or.. to change it to a different channel (when you suspect interference from neighbor routers is the issue)
nheinen said:
Did you rule out the signal strength and wifi network quality? It might just be that the connection is flaky. One way to test is just sitting close to the access point or.. to change it to a different channel (when you suspect interference from neighbor routers is the issue)
Click to expand...
Click to collapse
Thanks friend your reply!
If I move my phone close to the router, its not fix. Also its possible affect, my neighbors Wi-Fi connections (because of the distance of neighbor houses, to my place). Is it a effect of my router settings?
Sent from my WT19a using Tapatalk 2
Is there an option in your client to lower the maximum number of connections? That's a recommendation from the developers of adownloader, which is what I use
I am having the same problem.
I've tried so many things, on the phone and router.
Nothing has solved it.
I've adjusted a lot of settings on the router which have made no difference, I've used different types of security, wep, wpa, wpa2, no security at all. Static ip, changed dhcp lease times etc
On the phone I've tried setting a static ip, flashing different kernels, using different torrent clients, lowering number of global connections to 1 etc
I've also tried a few apps from the play store, wifi fix, wifi static etc
The wifi will just randomly disconnect when I download any torrent, there is no pattern to it but I can't download any torrent without disconnecting.
I would love to know a fix.
I'm using a galaxy s3
One thing I want to try is a different router to rule out whether the problem is the router side or the phone side.
At the minute I have no idea what is causing the issue.
I don't get disconnected when browsing the web etc on my phone.
If I use my pc or laptop to download torrents I don't get disconneted.
Ok I've finally worked out why I was getting drop outs.
For some reason when I use wpa2 with aes ecryption I get disconnected when downloading torrents.
When I use wpa and tkip I get no disconnects at all.
It's not a good solution as I get slower speeds using wpa and tkip but at least I don't get disconnected.
I wonder if this will be fixed?
This is an ICS bug. No matter what you have your wi-fi sleep policy set to, when the screen goes off the performance drops drastically. Download the Wi-Fi High Performance Widget from the market. When tap to enable the widget, your wi-fi will run at 100% performance no matter your screen state.
This isn't a sleep issue though. I have wifi set to always on keep wifi on during sleep.
Even the op said he tried leaving the screen on.
I set screen timeout to 10 minutes so I can monitor the application and also set screen on within adownloader and I get disconnected.
The only fix for me is using wpa and tkip encryption.
As soon as I use wpa2 and aes encryption I get disconnections when downloading.
gs3 said:
This isn't a sleep issue though. I have wifi set to always on keep wifi on during sleep.
Even the op said he tried leaving the screen on.
I set screen timeout to 10 minutes so I can monitor the application and also set screen on within adownloader and I get disconnected.
The only fix for me is using wpa and tkip encryption.
As soon as I use wpa2 and aes encryption I get disconnections when downloading.
Click to expand...
Click to collapse
Well, probably a hardware issue. I have no issues using the same wifi configuration and downloading torrents. And like I said..it really doesn't matter if you have keep wi-fi on during sleep checked. That doesn't matter at all. The performance will degrade so much when the phone is asleep that you might as well have it turned off. No, your wi-fi won't sleep, but it won't be running anywhere near its top performance, which is what the widget is for.
Wow. I have been trying to solve the same problem for last 2 weeks. upgraded windows drivers, router firmware, tweaked utorrent settings and whatnot. finally after reading your answer i changed my wifi authentication from wpa2+aes to wpa+TKIP and WOW. it worked. my wifi is not dropping anymore. I dont why WPA2+AES should cause this problem. BUt this tweak in authentication has finally worked for me.
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.