Database Users

HSDPA, will donate for help!!

Hi guys, i know this is a common problem amongst some of us, there are several threads discussing the connection drops but please there must be someone out there who knows something about it.
Basically with HSDPA enabled, the connection will last a random period of time before disconnecting by itself and displaying: cannot connect for an unknown reason.
When HSDPA is turned off, only 3G is used, although this works fine, it is fairly slower.
I am on T-Mobile UK, I have phoned their technical support, we have established it is not the sim card but the phone itself and have tried a variety of steps to solve this, for example receiving band settings for WCDMA, this has not fixed the problem.
I have tried changing the username and password combinations and have tried every combination of every advanced network option. I have used the T-Mobile stock rom 1.43, official HTC ROM 1.66, duttys hg, energyROM, artemis 5.0 and artemis 5.5 (would recommend btw) using MTTY before every flash, and every single different radio combination.
Myself, and many people here would be very grateful for any help posted.
Thanks in advance

Why don't you try Settings > Connections > Advanced network > GPRS tab > change from PAP to CHAP.. and reset... or viceversa.. that helped for me..

Thanks for the post, i've tried all that i've tried all advanced settings, at most they last for a day or so but after a while the connection dropouts seem to worsen

Ok ive just gotten off the phone for the third time with the technical support
basically what they've said is that the hsdpa WILL disconnect because the mobile towers simply can't handle the traffic.
He said in his honest opinion I should disable it because it simply won't work well and there is no fix.
Taking the piss juuuuust a little bit

Mine on t-mobile uk will show H, but usually drop down to 3G. It won't give me an error when it drops down though.
It sounds like its not transferring from H to 3G.
To be honest, i was unaware t-mobile ran HSDPA till I got my HD2 (never showed on my BB).

mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!

For my personal experience, I have for over a month, on versions 1.48, 1.66 by HTC, artemis versions, versions of other French chefs. had no problems,
Login Exchange push 24/24 without any cuts, I solicited the network with opera I passed automatically 3g H, and since February it to completely fall with the problems that everyone encounters (lost connection for several minutes , unable to connect to 3G without hard reset)
to remove the sim chip, I try with another chip of the same operator, another chip from another operator, the problem is still there.
For several days I have also continued a Touch HD, it faces no problems, no problems in connection 24/24.
In short, impossible to challenge any operator, any base station, any sim card.
It is then that the problem come from HD2:
-Software: We all try every combination of rom and radio rom possible.
It is the hardware, maybe the chip integrated into a concern for design, manufacturing concerns on some series, may be dysfunctional due to incompatibilitée between several chips of the phone, short, HTC should look into the problem.

cgrec92 said:
mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!
Click to expand...
Click to collapse
correct, it never disconnects.
It will switch seemlessly between them, when using or not using.
same one it came with. O2 HD2.
ROM 1.43.206.4 (70315) WWE
RADIO 2.04.50.22_2

I've also been struggling with this problem ever since I got my HD2 three weeks ago. However it seems like only a few people experience this.
My case is exactly like cgrec92 described. I'm on a 3.5G network in Denmark (3 Mobile), the phone shows the 3G connection at all times. When things do work and I use Opera/weather/Twitter/email etc, the symbol changes to H and I know the data connection is functioning. I can be using this for a whole hour without any problems.
However, if I put the phone down for a while and then pick it up again to use one of its data services, very often it does not connect to 3.5G (or H) anymore. It will still show the 3G icon on the screen, but there's no data connection. Then I go to Connection Manager and I can see that data connection shows as Off - and after a few seconds it goes back to On by itself That does not mean the problem is solved, as the phone still fails to establish any data connection. What I need to do then is manually turn off data connection and re-enable it again, which makes the 3G symbol immediately change to H. Then everything starts working again - until the next time it stops working...
I contacted the HTC customer service and they said it might be a driver-related issue, recommended a hard reset. I did that and for a few hours I thought it solved the problem, but no, data connection still disconnects by itself.
I spoke to 3 Mobile's technical service and they told me to update my software, which I had already done previously (I'm running stock 1.66 ROM Danish). They also said they never received any such complains about the HD2.
Like cgrec92 I've also played with all kinds of network/band settings, but it did not make any difference.
***
One question: isn't the phone supposed to automatically connect via EDGE when it cannot connect via HSDPA? Because in my case it will only establish data connection via H, never EDGE.
Any advice is greatly appreciated!

My take on this FWIW
It's not the phone!
It's the radio ROM installed.
I live in an an area where T-mobile say I can't get HSDPA.
However, I know that I can. How? Because 3 network uses the same local cell and transmitter as T-mobile and their signal will rip your eyes out!!!!!!!!!
All information obtained from a good friend of mine who works for BT, who, service manage the cells for the networks.
Plus, in this location, the cell traffic is then handled by BTs digiatal backbone which takes it who knows where after that.
So I have a very isolated situation in which I know there is a decent HSDPA signal, but I have had trouble with drop outs on my two previous phones (Nokis 5800 and HTC Touch Diamond 2) and originally on my two T-mobile mobile broadband feeds using Huawei E220 cell network modems.
All fixed when I finally found the right Radio and flashed it on the phones and unlocked and flashed the latest modem firmware.
My broadband connections are always on and never drop out and my HSDPA signal on my HD2 is through the roof!
To further emphasise the point all the equipment is used (when home based) behind solar glass which is notorious for blocking mobile phone signals.
Land on the best one and you will get incresed battery life as well.
Bottom line is try the latest radios (2.08.50.08_02 in my case) and I think you may be surprised at the results.
Current result of speed test 09.31 hours
ADSLSPEED.COM | Speed Test
3 minutes later
ADSLSPEED.COM | Speed Test

I have the same problem with the connection dropping. What I did to make it work was to disable HDSPA and putting GPRS to CHAP instead of PAP, and so far I have no problems at all

Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?

DORMIU said:
Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?
Click to expand...
Click to collapse
Erm!
It's your radio!
But, I think I did say that in a previous post.
You had a helpful fellow who sent you updated settings?
And he thought that was going to fix your problem?
That was helpful!
It's your radio!
The technicalities are beyond a customer assistant at the end of a phone. They work from a script.
I'll send you the settings.
Have you done this?
Have you done that ?
Never heard of anyone else with your problem!
It's your radio!
T-mobile uses PAP protocol (at least they do here in the UK) and it's a handshake protocol so changing that won't really do anything to the signal definition.
You have it or you don't.
It's your radio!
There is no "production fault".
You are not "lucky" or "unlucky".
You are in an area where you will suffer from this because of the ???????
THE RADIO!
I think I have made my point.
If it turns out that you don't have a radio issue then please feel free to admonish me.
Until then----------
It's your radio!

well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help

Yes, I was about to mention something similar. I haven't tried combining different ROMS & Radios myself, but I know people like cgrec92 who have with no good results.
And if it is the radio, then every 3 Denmark user like me would be experiencing the same problem, correct? I don't think that's the case. Actually when you read the forums you will find users from different countries with this problem, and they/we are not the only ones with a certain combination of ROM/Radio.
So yes, by disabling HDSPA I finally managed to have a stable data connection (but no 3.5G, obviously). At this point no one seems to know the cause of this issue, but I suppose it's naive to expect a future ROM to solve it, after all it's not a widespread problem. Is HTC even working on it? Are we sure it's not our devices that are faulty?
I honestly have no idea, but I cannot just accept this problem and live with it after all the money I put into this phone. That's why I brought up the possibility of having it exchanged for a brand new one in hopes that it will not have this problem.
Any ideas?

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
I referred to my radio in my previous post -20.08.50.08_02.
My OS ROM is Leo Lite 3.
Connection setup used and no further settings.
My explanation for this is the fringe nature of the received signal.
The radio its constantly 'hunting' for a signal and the radio software has difficulty in locking on.
BTW OS ROM and settings ready don't affect the efficiency of the radio signal.

MidnightDraven said:
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.
Click to expand...
Click to collapse
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the same ROM & Radio as us and in the same network. And yet they do not experience this problem.

Ive have similar issues but it depends where i am it appears that some towers its ok where others its not!

mo
DORMIU said:
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the
same ROM & Radio as us and in the same
network. And yet they do not experience this problem.
Click to expand...
Click to collapse
The radio differentiates between all the different levels and types of signal and it depends on how exact it interprets the signal. They are supposedly optimized before release and then re optimized with each newly released version. Network operators then have their own network parameters and again the radio has to accommodate this as well. One radio will never satisfy all these criteria and some of you will be in the wrong place at the wrong time on the wrong network with the least effective radio.
I can assure you that I most certainly do understand the problem and that is why, in my own case, I have resolved it.

HD2 Europe mobile-reception not workin flawlessly

Hey guys,
i have constant battles with my HD2 running Android. The mobile reception and logically because of that APN is also not workin properly.
Example: I'm at home and have full mobile-reception and internet is working flawlessly. One second later nothings workin... The reception display shows 4/4 lines and one second later 0/4. But i didn't move.. Same with WLAN and APN..
I guess it's not a "build problem", cuz i had this with lots of builds. So it's maybe a windows mobile thing. I have flashed 2.12.50 radio and chucky droid rom.
I tried 2.14 but my conversational partners had very strong echos. (with MIUI-Build)
I searched the forum and googled but i didn't find any solution for this..
Really need this to be fixed.
thx bench

benchbench said:
Hey guys,
i have constant battles with my HD2 running Android. The mobile reception and logically because of that APN is also not workin properly.
Example: I'm at home and have full mobile-reception and internet is working flawlessly. One second later nothings workin... The reception display shows 4/4 lines and one second later 0/4. But i didn't move.. Same with WLAN and APN..
I guess it's not a "build problem", cuz i had this with lots of builds. So it's maybe a windows mobile thing. I have flashed 2.12.50 radio and chucky droid rom.
I tried 2.14 but my conversational partners had very strong echos. (with MIUI-Build)
I searched the forum and googled but i didn't find any solution for this..
Really need this to be fixed.
thx bench
Click to expand...
Click to collapse
I don't know a lot about android. But i had similar "echo" problems when i used a TMOUS based rom. I use miris 1.80 based rom with 2.14 radio in the uk on vodafone with no problems.
Miri Rom Here: http://htcpedia.com/forum/showthread.php?t=2520
Have you tried a RMNET based android build. The data connection with those is slower but generally more stable. I use ppp but do get the data drop off. but turning the mobile data off and turning back on again sorts the problem.
It would probably better to post such questions in the android general section.

original_ganjaman said:
I don't know a lot about android. But i had similar "echo" problems when i used a TMOUS based rom. I use miris 1.80 based rom with 2.14 radio in the uk on vodafone with no problems.
Miri Rom Here: http://htcpedia.com/forum/showthread.php?t=2520
Have you tried a RMNET based android build. The data connection with those is slower but generally more stable. I use ppp but do get the data drop off. but turning the mobile data off and turning back on again sorts the problem.
It would probably better to post such questions in the android general section.
Click to expand...
Click to collapse
im currently using an RMNET Build. But this brought no improvement.
thx

Moved to Gereral Discussion Forum.
Mark.

i used winmob for a couple of hours and i experienced no reception variability. I'm completely stumped...
Any clue for this?

benchbench said:
i used winmob for a couple of hours and i experienced no reception variability. I'm completely stumped...
Any clue for this?
Click to expand...
Click to collapse
Same problem here. Signal drops quite frequently and for now i like the sense builds which you cant switch to 2G (unless im missing something). With other builds if i switch to 2G its sort of fine but slow data connection.

Same here, I live in holland and use the 2.14 Radio. I don't have a data plan yet (the phone is brand new), so it doesn't really bother me.. yet

we really do need a fix for this

Is nobody havin an idea?

Me 2
I´m having the same problem...anybody know a cure for this?

no problems here ... 2.10.5 radio

Same problem here,tryed different combo's with wm and Android,radio's etc......signal drops now and then.
Sent from my Desire HD using XDA App

Always signal drops here.. 35% of the time. Mesured with battery indicator.. only in Android not in winmo and I didnt find the right radio and rom for less drops.

Thats so strange. About every 10mins i have a totally data loss. Tried different radios and roms. Nothing helped. As i tried 2.14 i had strong echo issues.

i uploaded some screenshots. They're all taken at the same place. So you can see how strange these reception changes are...
http://img258.imageshack.us/img258/9430/snap20101011195709.png
http://img412.imageshack.us/img412/9261/snap20101011145139.png
http://img508.imageshack.us/img508/6186/snap20101011145334.png

Boy I'm glad to see this thread, I thought it was just me!
I am having exactly the same issue, and have done since using android builds. The only workaround I have is to switch on plane mode, and then switch it off again which seems to work for an hour or two. But then the signal goes all wonky again.
I wonder if this is also affecting the battery life. I'm sure I read somewhere once that loss of signal results in more battery use as the phone is constantly trying to locate signal.
I have tried a number of radio/rom combinations with no real change. As mentioned above, if I switch to 2G the signal seems more stable, but the data is unbearably slow.
I'm in the UK by the way.

drblow said:
Boy I'm glad to see this thread, I thought it was just me!
I am having exactly the same issue, and have done since using android builds. The only workaround I have is to switch on plane mode, and then switch it off again which seems to work for an hour or two. But then the signal goes all wonky again.
I wonder if this is also affecting the battery life. I'm sure I read somewhere once that loss of signal results in more battery use as the phone is constantly trying to locate signal.
I have tried a number of radio/rom combinations with no real change. As mentioned above, if I switch to 2G the signal seems more stable, but the data is unbearably slow.
I'm in the UK by the way.
Click to expand...
Click to collapse
Hope somebody's gonna know how to help us

push push push

me too!
I have the same problem. I might try the 10.2.5 radio as above?

I had this issue with Android that signal drops for no reason. The trick to my problem? Disable in the Netwok Mode "GSM/WCDMA Auto" and choose "GSM Only". Now the signal should work flawlessly without drops. It worked for me

[Q] network connection problem with all builds

I've tried a lot of builds from this forum (thanks to everyone who worked on them) but i noticed the following issue which i really can't understand why its happening.
the network connection does not work in all locations. i'd assume its a problem of the operator but.. if i reboot to windows mobile it works fine. i always experience the problem in the same locations (usually out of town) while when in town it works fine.
why does this happen? why is windows mobile different?
p.s i'm using the 2.12 radio.

try to set "aiplane mode" on and off... your network connection must be work.....
It's some problem for me..

same here. i've tried a plethora of builds and a couple of radios, but some builds have connections that work well and others work intermittently at best.
i have only been running an full nrg rom, but then everyone always yells that windows isn't running underneath anyways

+1 tried 2 builds and about 5 different radios... Phone with no data connection is a bit poor
Have you guys tried all the possible on/offs in windows before you boot through?
Cheers

make sure data roaming is on, and GSM/WCDMA switch is auto.
then turn on airplane mode, and switch back.

unfortunately i tried all of that. mainly i even tried rebooting the phone in windows, checking that network works, then rebooting again and starting android (just to make sure it wasnt affected by wm) and trying to get a network connection but still.
its puzzling cause this doesnt seem like an instability its more of an inability to get a connection when the signal is low or in areas that possibly run a slightly different kind of mobile network broadcast? (i'm not really familiar with how the network works..)

found the solution on this end. I am in France, so needed to modify the last couple of lines in /system/build.prop to point not to google (I assume), but to the local operator DNS.
Great stuff guys, I'm amazed!!

that could be it. how do i change build.prop from within android?

I am very curious to which lines you changed, and where you exactally changed them to. Please share, this been buggin me for weeks.

mine problem is my 3G network connection is very slow..... someone know how to solve this problem? i'm using radio v2.14 before & now v2.15 seems like same problem...

I changed the build.prop using builddroid: Install, connect phone in android in usb debugging mode, change the build.prop and transfer the changes onto the phone and reboot.
Here the last few lines of the build.prop I'm using. The dns's are provider specific...
Code:
name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
net.ppp0.dns1=62.201.129.99
net.ppp0.dns2=62.201.159.99net.dns1=62.201.129.99net.dns2=62.201.129.99net.dns3=62.201.159.99
Hope this works for you too

Thanks for the share , im in school right now, so im gonna try as soon as i have a window of time ty in advanced

Hey,
Could you tell me where you find that dns ip?
The only ip I could found was this:
192.168.251.150
But I highly doubt that its correct, because its so diffrent from yours, also my 3G didn't work with this one.
If you could help, would be great.

[Solved] Cyanogen Wifi connectivity issues (all models)

After flashing CM6.1 I got the notorious wifi connectivity issue that numerous people have been reporting around the web. The issue is the following:
1: Wifi discovers neighbor's AP but no longer home AP.
2: Wifi problem randomly fixes itself, but sometime comes back and home AP can't be found again.
Many random solutions on the web include removing all stored AP's on the phone, resetting the router, rebooting and power cycling the phone numerous times, etc. Most people report that wifi miraculously start working again after the above but there is no consistency to exactly why and what works.
I tried all of the above with no luck, and even flashed three different roms with different kernels, did wipes, formatted everything inculding boot partition etc.
Here is the ACTUAL problem:
Different regions use different wifi channels. North America uses the first 11, most of the world uses 13, and Japan uses all 14. After flashing CM6.1 it changed the regulatory domain on the phone to only scan the first 11 channels meaning my European router broadcasting on 13 wouldn't show up. This setting seems to be persistent and doesn't change just because a new rom is flashed.
The reason people report the problem to be randomly fixed after a few days (and sometimes coming back days later) is because most routers automatically select which channel to broadcast on and therefore might end up within the first 11 at occasion. If it changes to something higher after that however, the problem is back.
Solution:
Open Settings, Wireless & network settings, Wi-Fi settings. Press "Menu" and select Advanced. Press regulatory domain and change to 14 channels.
To learn more about this and understand which channels are used in which countries, look here: http://en.wikipedia.org/wiki/List_of_WLAN_channels#2.4.C2.A0GHz_.28802.11b.2Fg.2Fn.29

Thanks man, even I still met an issue which was wifi disconnect frequently (usually after 12 seconds or less, it's re-scanning AP and trying to re-connect again) when I was trying to share my broadband internet from laptop to my legend.
BUT, after I update my wlan driver (now using 8.0.0.238 for my Atheros AR5XXX), the issue seems gone.
I found that by updating wlan driver to the very latest driver (for mine is 9.2.0.xxx) is not a guarantee to resolve this problem.
Now, by combining your suggestion and an "appropriate" driver version for my wlan, it work flawlessly until now
PS: driver version which will work varies from devices to devices. Do trial and error if you must
edit: well, not 100% gone, but much better . the connection is far more stable

Could be a problem for some but not all the issues with WiFi. I knew about this and even posted one or two times this check for the number of channels in different other topics as a possible solution. Still there are times when the connection to the "home" AP is done very late after entering in range or switching on the WiFi and the signal is changing from none to full and back frequently, for the same relative position to the router (I'm standing in the same place). Also even if the signal is full or good, the Legend seems not to have Internet connection that is, the weather updates or XDA applications or browser could not connect. This is still happening even if the selection for the number of channels is correct. And also this is not happening with a stock ROM, I made some comparisons between my Legend and one of my friends that has stock ROM. He is having full signal and excellent browsing experience while I have random disconnects or drops in signal level. My thought is that the difference between drivers made by HTC and the ones in CM ROM is the cause. As it is with some other HTC proprietary developments (like Flash implementation or FM radio), could be that HTC spent some more development time in eliminating bugs and making a better driver.
Of course, this will not stop me use CM ROMS, it is a little bit frustrating, but the other things in CM ROM's makes the difference for me.

Rapier said:
My thought is that the difference between drivers made by HTC and the ones in CM ROM is the cause
Click to expand...
Click to collapse
I think you're right. Yesterday, I tried my friend's phone (which has a stock ROM), using the same AP and there was no dropped signal or disconnected in wifi. I also tried using other android phone brand (5 series from samsung) which also has a stock ROM and there was no problem at all. Drivers is the culprit

Work
Thanks u very much.worked on my milestone

Thanks. Actually worked.

Rapier said:
Could be a problem for some but not all the issues with WiFi. I knew about this and even posted one or two times this check for the number of channels in different other topics as a possible solution. Still there are times when the connection to the "home" AP is done very late after entering in range or switching on the WiFi and the signal is changing from none to full and back frequently, for the same relative position to the router (I'm standing in the same place). Also even if the signal is full or good, the Legend seems not to have Internet connection that is, the weather updates or XDA applications or browser could not connect. This is still happening even if the selection for the number of channels is correct. And also this is not happening with a stock ROM, I made some comparisons between my Legend and one of my friends that has stock ROM. He is having full signal and excellent browsing experience while I have random disconnects or drops in signal level. My thought is that the difference between drivers made by HTC and the ones in CM ROM is the cause. As it is with some other HTC proprietary developments (like Flash implementation or FM radio), could be that HTC spent some more development time in eliminating bugs and making a better driver.
Of course, this will not stop me use CM ROMS, it is a little bit frustrating, but the other things in CM ROM's makes the difference for me.
Click to expand...
Click to collapse
Hello Rapier,
I have installed the CyanogenMod 6.1.1 (stable) on my HTC Desire (GSM / France) with latest radio image (32.49.00.32U_5.11.05.27) and taken some time to configure it. Now, everything seems to run well ... excepted the WiFi (and perhaps also the GSM). My problem is exactlw what you have described:
- on stock ROMs, the WiFi signal is stable and quite strong
- on Cyanogen ROM 6.1.1, the WiFi signal fluctuates, the connection is unstable and gets lost.
I like CyanogenMod ROMs very much. The WiFi issue is the only thing that I was not able to correct. You were speaking about WiFi drivers: would it be possible to extract the WiFi drivers from the latest HTC Desire stock ROM and copy them into the CyanogenMod installation?
My impression is that the CyanogenROM is scanning for networks in the background, even if a stable and strong WiFi network has been found and is currently connected. Perhaps there is a possibility to disable this scanning?
To finish, I have also the impression (I know, this is not very scientific ... but perhaps it could help to determinate where the issue comes from) that the GSM network is also fluctuating. I use WiFi Analyzer (available on the Android market) and when I plot a graph, without moving the phone or even without moving myself, the plot oscillates between -80dBm and -30dBm (I swear that there is nobody playing with the on/off button of my ZyXEL router ).
@sz1a: Thank you very much for your post: this helped me to discover these "hidden" settings, but my configuration is manual on the ZyXEL and everything was fine. Perhaps you should switch the thread to "unsolved".

I'n not a developer, only an ethusiast with a Legend. Also I'm not a Linux expert so I can only guess and experiment...threfore I cannot tell if porting HTC proprietary drivers is possible. I'd say not...if it was, we would have it by now. The main reason I think, is that those drivers are not open source, so nobody can port them since the sources are not available. I'm sure that if it was possible, they'll have been included in CM
Sent from my Legend using XDA App

pleaaaase help, im running CM 6.1 RC 1
wifi was working fine untill yesterday, i tried to connect to my friends router but couldnt.. i tried putting it in manually too.. then i couldnt connect to any router infact my phone wont even pick up any even my home one.. i tried switching to 14 channs like this said but no luck
any help please

Wifi Tether BUG - no Internet on newer kernels KG5 and higher on my Lenovo Laptop

I recently encountered a weird bug when SGSII would establish wireless "g" connection at 54mbps (instead of regular "n" at 65mbps) when doing 3G to wifi tether on my Lenovo Laptop.
My other 2 laptops work fine as expected, however after doing some troubleshooting, its concluded that the wifi router IP forms a "black hole" hope because of which the external communication to Internet dies after 4 or 5 hops (internal to the ISP). While doing a Trace route, the first hop (the IP of the phone's wireless router - 192.168.43.1) doesn't respond to the trace route ICMP requests and fails, however it does work for the next 4 hops before eventually dying after that.
This proves that wifi connectivity between the phone and laptop remains good despite it being downgraded as "g" network when my laptop is capable of "n" at upto 300mbps.
Never had this issue before KG5 or higher builds and it seems all the custom kernels and ROMs based on these newer kernels are affected.
As this issue is affecting only my Lenovo Laptop, not sure if it was ever reported.
Fortunately I am able to flash kernels based on earlier than KG5 build like Ninphetamine-2.0.x (till 2.0.5).
All Ninphetamine-2.1.x builds and kernels like "RAGEmod v1-T30" are also affected.
I am currently on "TOUCH X-treme KH3 2.0 'PERFORMANCE'" ROM and fortunately it seems to be working fine on Ninphetamine-2.0.5 as per my preliminary testing.
I have 2 more laptops which seems to be working fine otherwise on any latest kernels.
I would appreciate if someone could shed some light on the reason behind this bug as I am still investigating the cause and on a fix other than older kernel versions.
My primary usage of this phone is completely impacted by this bug and I hope Samsung would be able to resolve this bug before their next official release of 2.3.4 or higher version builds.

Hmm like the battery drain while charging bug on SGS1 I seems to be the only person shaken up by this bug which makes my SGS2 completely useless when using the latest kernels/ROMs.
My laptop has Intel WiFi Link 5100 AGN. Can someone having same/similar Wifi adapter report their experience?

Not surprised that Wifi tether is not used by most of us and hence such bugs go unnoticed and I paid a HUGE price of crashing my laptop which trying to fix the issue as I never thought it is the phone doing something weird which is preventing my laptop to get proper wifi connectivity.

Unfortunately no resolution till date. All the latest kernels and ROMs are affected. Not sure what is the issue as it defies logic why only one series of Wifi adapters are affected by this bug.

No resolution till date. All the recent kernels are still affected except the one on CM7 ROM.
Seems I need to wait for this update to become official in India before raising with Samsung here.

Ahhh.. Finally a respite after several MONTHS! The latest Siyah v2.5 kernel (http://forum.xda-developers.com/showthread.php?t=1263838) with new Wifi Driver has restored Internet access through Wireless Tether though the speed is still limited to g instead of regular n at 65mbps. But atleast I can now switch from the good old Ninphetamine-2.0.5 kernel to this latest kernel I always wanted to keep. Such a RELIEF!

No internet
Prankey said:
Ahhh.. Finally a respite after several MONTHS! The latest Siyah v2.5 kernel (http://forum.xda-developers.com/showthread.php?t=1263838) with new Wifi Driver has restored Internet access through Wireless Tether though the speed is still limited to g instead of regular n at 65mbps. But atleast I can now switch from the good old Ninphetamine-2.0.5 kernel to this latest kernel I always wanted to keep. Such a RELIEF!
Click to expand...
Click to collapse
I still get a no internet access notice on my laptop... Any tips?

Fix
leondb said:
I still get a no internet access notice on my laptop... Any tips?
Click to expand...
Click to collapse
Downloaded the newest beta from their website and installed. Then chose my device, and I am happy to report it is now working

leondb said:
Downloaded the newest beta from their website and installed. Then chose my device, and I am happy to report it is now working
Click to expand...
Click to collapse
I have faced the similar problem. But how my problem was solved is give below:
Update you windows OS using windows update
Then manually switch off the radios and switch on
That's all and now I can use wifi tethering as normal. First check with second option, if doesn't work, then try updating the PC OS too.

grgsiocl said:
I have faced the similar problem. But how my problem was solved is give below:
Update you windows OS using windows update
Then manually switch off the radios and switch on
That's all and now I can use wifi tethering as normal. First check with second option, if doesn't work, then try updating the PC OS too.
Click to expand...
Click to collapse
Latest Siyah 2.6.x kernels have AGAIN brought back the bug on my face!
None of the other options you suggested worked. I have spent hours trying to figure it out and this is what I get when I am affected:
Tracing route to 8.8.8.8 over a maximum of 30 hops
1 * * * Request timed out.
2 164 ms 123 ms 127 ms 218.248.84.5
3 228 ms 68 ms 81 ms 10.42.43.101
4 79 ms 79 ms 80 ms 10.42.43.28
5 * * * Request timed out.
Doesn't make ANY sense on how the first hop is getting blackholed when it otherwise respond to ping requests. I am able to reach till the last hop of ISP before dropping off.
Can any network gurus out here explain this phenomenon? I am unable to locate any logic behind it.
Hope Siyah team fixes it soon for me to enjoy a glimpse of Voodoo Sound on my SGS2.

I have a Lenovo T520 and am using the KK2 stock firmware/rom with no problem whatsoever in tethering...using it at this very moment

It actually seems to be affecting only Intel 5100 adapters like on my R400. I have 3 other laptops and a mobile phone which are working fine otherwise
As I said, it defies logic why only this adapter has compatibility issue when even older Intel 39xx based adapters work perfectly fine otherwise.

Fixed in Siyah 2.6.2 kernel again
Finally got it fixed on Siyah 2.6.2 kernel (to be released shortly) while working directly with the dev "gokhanmoral" in the past few days. All seems to be working now like it was in 2.5.x builds for me.
I sincerely thank gokhanmoral for taking the pain of looking at this isolated bug by Samsung which has fortunately been resolved on the latest drivers (to an extend, still no n mode access).