Hi,
I've been having a problem where my phone is restarting itself intermittently while I use the wireless network at my school (Purdue). I've tried both WPA and WPA2 (the school provides networks for both) and seen problems with both. The networks are the "enterprise 802.1x" version which requests a username and password to connect. I sometimes have to try a few times to get it to connect to WiFi (it sometimes takes a minute or two after I first turn on "Wi-Fi". Then, every few hours, the phone reboots itself: I'm in the middle of doing something (can be anything) or the phone is idle in my pocket and then the AT&T boot screen appears. I assume that there is some sort of kernel panic or something else that causes the hardware to reset itself.
I'm fairly sure that this issue only happens in a specific building on campus, so perhaps there is a misconfigured access point here. Even so, this is still a bad problem and could have security implications (perhaps a malformed packet is causing some buffer to overflow).
My phone is a non-rooted, stock AT&T Captivate with the JH7 firmware
I've tried talking to Samsung, but they want me to send the phone to them so that they can "repair it". I've swapped out the phone at the store where I got it for a new unit and the new unit (with new battery) also has this same problem.
The 802.11g at my house works flawlessly.
Ideas?
Assuming that this is a kernel-panic issue, how would I extract a stacktrace or other debug information? Do kernel panics cause the phone to restart itself? Have the 802.11 drivers been updated in newer kernels (what's the chance that a custom firmware based Froyo would solve this issue?)
(disclosure: This question was posted on samsungcaptivateforum last month without any
productive responses. I'm a new user here, so I cannot link to that post yet....)
pigrew said:
Hi,
I've been having a problem...
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Click to collapse
Thats weird because my phone has no problems like that and I have connected to many WPA networks. I don't know the source of the problem but my suggestion would be try a custom rom before sending to samsung because it can't hurt. If it doesn't work for you then just restore to stock and send it to them. (kernel suggestion: latest speedmod kernel. works flawlessly.)
Do you use "enterprise"/RADIUS/802.1x authentication? (This (roughly) means that you need to enter a username and password in order to connect to your network).
I was trying to wait until AT&T releases 2.2, but I'm getting impatient on that front. I'll try to look for the speedmod kernel, perhaps. My office is in an electronics lab, so I wonder if something is spewing out RF interference in here.
-Nathan
joeshmoe08 said:
Thats weird because my phone has no problems like that and I have connected to many WPA networks. I don't know the source of the problem but my suggestion would be try a custom rom before sending to samsung because it can't hurt. If it doesn't work for you then just restore to stock and send it to them. (kernel suggestion: latest speedmod kernel. works flawlessly.)
Click to expand...
Click to collapse
I just flashed my with the Cognition 3.02 firmware and the issue is still present. My hunch is that it is a wifi firmware or driver bug. I doubt that these things are changed in the various kernel builds.... Maybe the official Froyo release will fix it, but at this point I doubt that it will.
Someone in my building suggested that the issues may be caused by us having two separate networks on different sides of the building that have the same ESSID.
Related
Alright, this is my first post and I just recently got a Touch Diamond (my first 'smart' phone)...
I'm running into a problem that seems multiple people have been reporting - and that is Wi-Fi. Since the model that I got already came with the latest ROM installed (the one released mid July), I don't have anything to compare it to.
What's happening is that sometimes the phone will recognize my wifi connections, sometimes it won't. Even when I am able to successfully connect, it is only for a brief moment and then disconnects. Since I'm with T-Mobile and do not have a data plan, my main way of communicating will be through Wi-Fi. I'd REALLY like to know if there's anyone out there that might have any ideas...
I also tried updating the phone with the latest cooked SwiftBL ROM to see if maybe one of the modifications could fix it, but I still see the same problem. It's not my wifi because I've tried several other (non-secure) wireless connections and see the exact same problem with all of them. I saw on this forum who suggested to change the power settings of the Wi-Fi device, but that did nothing .
I'm at a loss....could it be a bug with the latest official ROM release?
I bought a second-hand G1(no data plan) since I wanted to play with my phone. It ran 1.6 DMD64 stock with the newest radio; and it had WiFi problems.I did some research before purchasing and knew it could be flashed; so I tried flashing it to a modern ROM to see if that would solve the problems. After figuring out it was an American phone(I live in Holland) I managed to root it and flash CM6RC2. I now sometimes have a lot of reception; sometimes not. I tried installing WiFiReEnabler and WifiFixer; WifiFixer made connections overall a bit more stable; but half of the time I still don't have WiFi. I also tried to use my laptop's WiFi for my phone via USB; followed the instructions but failed. My phone managed to get semi-bricked 3 times in that period(stuck at G1 screen), and I tried flashing another ROM too; so I flashed CM 4 times. I'm using a Belkin N1 wireless router; switched channels, security and looked at my keyphrase.
The problems I have with WiFi:
- Not finding my router even though being quite close to it; happened only with 2 of the 5 times I flashed
- Finding my router but not connecting; happened 3 of the 5 times I flashed
- Saying that it's connected but not allowing me to browse; happened all times but WifiFixer occassionally fixes this
I'm still running CM6RC2 with Amon Ra recovery 1.7 on an American phone; my router is a Belkin N1 with firmware version 3.01.04 and hardware F5D8631-4 v3 with WPA-TKIP, broadcast SSID on, channel 4.
Is there a way that allows me to get stable internet on my phone without a data plan?
This could be either a hardware or software issue, not quite sure. Your options are listed below
1. Root and flash to a different more updated rom
2. Flash the newest radio(not sure if it effects wifi signal strength, forgot)
3. Open up the G1 and see if any connectors are loose.
Option 3 is probably out of the question, option 1 and 2 can be done by looknig into the rom bible(sticky) in the G1 dev thread, this will give you threads with new roms, how to install them etc, as well as flashing the new radio(if you have not yet done that)
I already flashed the newest radio, since I tried to install CM6 and in that guide I was instructed to flash the newest radio. I also obviously have installed CM6RC2 which is the newest version of CM.
I did read somewhere that more people had WiFi issues with CM6RC2 or deratives; I'll try running an older version of CM.
Edit: Doesn't work; at least I can't browse when I'm connected. Doing a nandroid restore right now; I'm intending to use Froyo.
In the case that doesn't work, how hard and dangerous would it be to open up my casing and look for those wires? It's second-hand, so warranty would likely not be a problem.
Thanks for answering anyway.
Is it possible that your router is using a different band?
I don't know about Holland, but sometimes different countries allow different wireless bands.
Try changing the channel on your router to something like channel 7 or 11, something varied from the norm.
Well. I found a solution. Connecting my old sitecom wl-167 which has no wireless N support seems to give me no problems.
(Holland has different channels then America, but my G1 was surprisingly already configured for Europe)
Thanks for your help anyway!
P.S. My XDA does seem to have some problems. "No route to host" when trying to post.
Edit: It appears it isn't 100% fixed; WiFi-fixer still solves it right now but it might not be the solution.
Edit 2: Well, WiFi-Fixer is able to fix my problems all of the time for now; but ocasionally I have WiFi for 10 seconds then 10 seconds no WiFi, et cetera.
Sent from my HTC Dream using XDA App
Edit 3: It isn't threatening to my WiFi anymore. Thanks everyone who tried to help me.
Ive tried with stock 2.3.6, CM7 and CM6 and although the CM roms improved wifi reception by leaps and bounds, my N1 will still not recognize some very necessary wifi SSIDs, namely the one at work. On my laptop, my old phone (Optimus T), and everyone elses smartphones there is no problem connecting at work. The access point is provided by a Fortiwifi 60c server. fortinet.com/products/fortiwifi/60C.html
Has anyone else had this problem or know the right direction for a solution? Wifi at work is a must!
it's not an adhoc network is it?
try moving closer to the source and see if other android phones can see it too
No, the network in question is not an ad-hoc. Yes, as I said in my original post, other smartphones and wireless devices have no problem making this connection.
I flashed and upgraded my phone's baseband radio to the most up-to-date version and my phone still doesn't see the network in question. I'm just about out of ideas.
Radio has nothing to do with WiFi.
Try different kernels.
Make sure that the visible access point isn't Wifi N.
Thanks for the experienced suggestion, thats just what I needed. Is there much risk involved in flashing kernels like there is with radios? Is the process the same, boot into recovery then install zip? Ill do the research myself here in a few hours when Ill have the free time but I'd like your input as well, Jack_R1, since it sounds to me like you know what you're talking about here. I'm hoping that you'll reply before I give this a try.
There is no risk when flashing kernels - in the worst case, if the flash went wrong, you can always boot to recovery and flash again.
The process is the same.
Kernel should be compatible with your type of ROM (AOSP GB/AOSP ICS/CM7/CM9/MIUI/etc).
Okay guys I've got a constant problem with DMX, not just with this version, but I start to get tired of it. So after a day or two of flashing, wifi starts to stuck at "Obtaining IP address", and does not connect at all after that. As I said it's not only with this version (I'm on 1.6.5), I have also tried different kernels, etc, but it's still the same. I don't want to always reflash, but I'd also stick with this ROM as I really like it. This problem does not come up on CM-based ROMs at all. Thanks for any tips.
Btw I've also tried static/dynamic IP settings, I've changed a router (not because of this), reseted it many times, so not that I didn't try anything at all.
I never had a issue... Have you installed the rom with full wipe?
Of course I did a full wipe, didn't restore any system apps, and as I said it works perfectly for a few days, then bamm! I was playing SongPop, started a game with someone and it stopped when downloading songs.. then I went in wifi options and it showed this IP bug once again. By the way I've just finished reflashing (now without full wipe), and it doesn't even connect now. I really like flashing ROM's etc, but not the same one all over again lol.
Finally I could set static IP on my phone, works now, Thread can be closed. If anybody has the same problem (I've read I'm no the only one), then holla at me!
I'm having a wifi issue from the day i have purchased this phone my wifi always go in the sleep mode don't know why no matter which ROM i use it goes to sleep after the screen is locked or after 5-6 sec of no use of phone.
i'm the only one having this prob i guess.. I thing its an hardware issue, not sure, hope some1 could help me out ^_^
Note: i have kept wifi policy sleep never
Problems with wifi is a kernel issue.
Its adviseable to post which kernel is used
Well I wouldn't be sure, as I was using Kowalski kernel and KoB kernel too, both had the same problem, and only on DjangoManoucheX ROM. But it seems to work now with static IP set.
akash.mahadeshwar has his ROM/kernel stated in his signature, too bad I can't help you.
Lol I don't know if its hardware or software issue but changing rom or kernel dosent fixes it :-/
Sent from P990 the beast phone ^_^
akash.mahadeshwar said:
Lol I don't know if its hardware or software issue but changing rom or kernel dosent fixes it :-/
Sent from P990 the beast phone ^_^
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Click to collapse
have you tried changing your wifi to static ip?
if not, then go into wifi settings and long press/modify the one you cannot connect to. Go to advanced settings and change from DHCP to Static IP. Run Windows commander (just type 'cmd' in the Start Menu search box), and type 'ipconfig /all'. It will show all the informations you need to type to your device's wifi settings. You can give almost any number to the first IP field (when your IP getaway is, for example 192.168.7.1, you only have to change the last number to any you want to, like 192.168.7.155.. but the best way is to get the IP number your device used before wifi got stucked). If you can't see DNS1 and DNS2 in your ipconfig, then you have to go into your router's settings (in browser), that will show them. If you type everything correctly, then Save button won't be greyed out no more, and voila. Wifi works perfectly for me since then. I hope it helps.
Sent from my LG-P990 using xda premium
Changing Wi-Fi to static is far from being a solution; at best it's a workaround.
It's probably related to LG code, used to compile the module loaded by kernel.
I'm not sure if the problem you're reporting us exactly this: I have a brief disconnection/reconnection sometimes when I unlock the phone (Wi-Fi suspends policy sets as never), but this it's not annoying me to much because while sleeping it's connected, and the 2-3s after wake-up is not to much.
Do not say "thanks"; just press it under here.
louiscypherbr said:
Changing Wi-Fi to static is far from being a solution; at best it's a workaround.
It's probably related to LG code, used to compile the module loaded by kernel.
I'm not sure if the problem you're reporting us exactly this: I have a brief disconnection/reconnection sometimes when I unlock the phone (Wi-Fi suspends policy sets as never), but this it's not annoying me to much because while sleeping it's connected, and the 2-3s after wake-up is not to much.
Do not say "thanks"; just press it under here.
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Click to collapse
No, my problem was I could not connect to my wifi AT ALL. Couldn't even do it after a full wipe and reflash, so using a static IP is a solution for me, as it works for 3 days by now. It can be related to the stock ROM's code, as CyanogenMod ROMs don't have this problem for me.
Try flashing KoB kernels again, in mine its wifi work correctly
Sent from my AD683G using xda premium
Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"
The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).
f_ranek said:
The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).
Click to expand...
Click to collapse
Did you check logcat? If you didn't then logcat might show what the problem is. And your problem sounds more severe than mine. I only lose 3g but I can still call and send text messages. A problem with the simcard might be possible but it could also be a physical problem with the simcard slot though I can't say why rebooting or turning airplane mode off and back on would fix that.
Sahri said:
Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"
Click to expand...
Click to collapse
I just wanted to confirm that I have similllar issue with 3g data connection. S3 mini with I8190XXAMG4 baseband. Stock ROM used for last few years (without any significant issues with 3g data connections), upgraded to latest CM11 20151017 from maclaw/novafusion. I noticed that there are some glitches with 3g data connections. Sometimes I need to tap few times before connection finally is being established. Funny thing is that I have second s3 mini with the same CM11 20151017 and all is OK.
I tried a lot of another ROMs; fifferent version of CM11, OmniROM (4.4.4 and 5.1.1), CM12.1 - problem remains - issues with 3g data connection. Is there any solution to get rid of this 3g data issue?
Sahri said:
Did you check logcat?
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Click to collapse
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Sahri said:
I can't say why rebooting or turning airplane mode off and back on would fix that.
Click to expand...
Click to collapse
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.
I used Note 2 about two years, flashed different roms and never had troubles, but then my friend used it about 3 months on 5.0.2 custom and got troubles with gsm/wcdma. My next samsung phone become our beloved i8190. Flashed it from stock to 5.0.2 CM, than 5.1.1, after month got first Cellular bugs. Tried another LP and some KK roms, my troubles with baseband became more and more frequently every day, flashed different modems, changed much settings in system.. So I was desided that it's all HW problems, and hated Samsung for such failure. But one day just tried to install Project Noble, and all this troubles gone forever. So it's just drivers, which not optimised for new Android versions. 4.1.2 mixed with old TouchWiz after fresh and clean Lollypop feels horrible, but we can do nothing with it.
f_ranek said:
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.
Click to expand...
Click to collapse
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it? And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.
Sahri said:
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it?
Click to expand...
Click to collapse
Hardware could also have its state, which may get corrupted and reset on reboot.
Sahri said:
And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.
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Click to collapse
No relevant priori messages within more or less 10 minutes.