Reduce Wifi Tx power via wlan_cu (or other config)? - Android Software/Hacking General [Developers Only]

Hello,
I am looking to reduce the maximum transmit power of the wifi module from 100mW to 50 or 10mW. Unlike iOS (iPod Touch, iPhone, iPad) Android does not seem to reduce the Tx power of the wifi radio as needed. On Nokia devices you're able to set the maximum Tx level of the Wifi module / antenna from the "Show advanced" menu in your wlan configuration. After pressing yes to 'blah blah advanced blah blah blah. On Android it seems to be at a constant 100mW regardless of Rx decibels. Not only wasting more batter than ever, but also subjecting you to unneeded amounts of radiation.
Reading online some users have tweaked the wlan power saving mode using wlan_cu. Also another posting indicated options might be in tiwlan.conf (but this seems related to tethering only).
I couldn't find either wlan_cu or tiwlan.conf on my 2.2 android desire.
Code:
which wlan_cu
find / -name tiwlan.conf
find / -name wlan_cu

On my Android 2.1 tablet, you can reduce tx power on the command line using iwconfig.
iwconfig wlan0 txpower auto
Click to expand...
Click to collapse
At home I've found this reduces the power (according to iwconfig) from 16 dBm to 1 dBm. However, this setting is lost when wifi is disabled.
I haven't yet tested whether this results in a significant improvement to battery life, but if it does I'm planning to write an app to set it automatically whenever wifi is disabled.

StevePER said:
On my Android 2.1 tablet, you can reduce tx power on the command line using iwconfig.
At home I've found this reduces the power (according to iwconfig) from 16 dBm to 1 dBm. However, this setting is lost when wifi is disabled.
I haven't yet tested whether this results in a significant improvement to battery life, but if it does I'm planning to write an app to set it automatically whenever wifi is disabled.
Click to expand...
Click to collapse
Did it give any good results?

Related

Enabling 802.11g WiFi on Tornado

There is a tweak for PPC to enabled 802.11g on the xda forum
-----------------------------------------------------
Enable 802.11g WiFi network connectivity
While the phone by default only connects to 802.11b WiFi networks, it is capable of connecting to 802.11g WiFi networks as well, once this is enabled:
HKLM\COMM\TNETWLN1\Parms\dot11SupportedRateMask = 1 (DWORD decimal)
HKLM\COMM\TNETWLN1\Parms\dot11SupportedRateMaskG = 8 (DWORD decimal)
To set back to default:
HKLM\COMM\TNETWLN1\Parms\dot11SupportedRateMaskG = 4 (DWORD decimal)
----------------------------------------------------------
I checked these settings on Sp5m and found out that
HKLM\COMM\TIACXWLN1\Parms\dot11SupportedRateMask = 1 (DWORD decimal)
Exists!!!
Seems like HTC tornado is using a TI (texas instrument) ACX wifi chip.
Wuts say?? if i put a second key (dot11SupportedRateMaskG= 8) to enable the 802.11g??? will it work??.
i test it and it not work
this means the chip doesn't support 801.11g
SHiSH said:
i test it and it not work
Click to expand...
Click to collapse
did you remove the wifioff.exe from autostart?
might work
Well, surfing goes a lot faster as it looks. Also tested google maps and I again had the idea it goes a lot faster (tested even new cities around the globe I didn't view before).
How can I find out for sure?!
I notice a increase in throughput after changing the above keys.
Also I changed
dot11DesiredTxRate = 13
dot11SupportedRateMask = 8
xavalon said:
Well, surfing goes a lot faster as it looks. Also tested google maps and I again had the idea it goes a lot faster (tested even new cities around the globe I didn't view before).
How can I find out for sure?!
Click to expand...
Click to collapse
are you talking about tornado?
great breakthrough if proven! please elaborate your procedures and observations.
yeah talking abt tornado.
And i think i have some success.
when i tried to connect to a AP. The tx rate shown is Auto and not just 11 mbps..
Also the wifi reception seems to have increased.
Hi,
I have an Imate SP5m and I have added the key
HKLM\COMM\TNETWLN1\Parms\dot11SupportedRateMaskG = 8 (DWORD decimal)
I have set the router now to only use only 802.11g. Now it is not able to connect to the router. The router message says:
WIRELESS wl0: 11g : DeAuthentication (non-auth'd C3 frame rcvd.) User
which indicates that imate is not capable to handling the 54Mbps Tx/Rx rate.
xavalon said:
Well, surfing goes a lot faster as it looks. Also tested google maps and I again had the idea it goes a lot faster (tested even new cities around the globe I didn't view before).
How can I find out for sure?!
Click to expand...
Click to collapse
LOL...
you won't connect to the internet any faster with "G" Wifi speed. That is a very common misunderstanding.
It will just connect faster to your router, and other computers on your local network. However, the internet generally travels at less than the max throughput of "B" (which is 11mpbs).
So, no matter how fast you connect to your router, you're limited to the speed of your internet connection. Most broadband connections average at around 1Mbps... or roughly 1/10th of the speed of 802.11b.
This is a fruitless exercise, unless of course you have some sick fiber optic internet connection that moves in excess of 11mbps... in which case, tell me where I can sign up for THAT!
The only reason people enabled G on their PPC's is because some people have routers set to only connect using the G protocol, and they'd like to connect as well. It doesn't get them online any faster.
I hope you understand now.
i agree with you totally. i am sayin that i notice a increase in speed between the router and the mobile..
For some reason after playing with all the values on my sp5m (still did not see any improvement after adding the MasgG = 8 keyword) the signal strength indicator stopped working - it show GOOD (bar fully colored) all the time.
Any idea how to over come it? Any other utility that can show me the strength of the reception?
I am using the latest i-mate sp5m ROM 2.0.8.0.
Thanks in advance to all of you..
have you applied any homescreen???. try changing the homescreen to windows default and check.
because some of them while making the homescreen set the progress bar foreground color same as progess bar's background. Thats why you allways see a full strength..
You are the man!
You saved me a re-install of the ROM to try to resolve it....

Polaris: WLAN problems?

Hi all,
I recently bought my HTC Polaris. It's the first wireless device I have, so I also bought a WiFi router to test it. I do not have any previous experience with WiFi on WinMobile, so the problems I am having could just be due to my newbie-ness...
I initially set my WLan router to WPA-PSK. I was able to get my Polaris connected, but at random times and repeatedly the device would stop receiving data (using IE, Google Maps...) with no apparent reasons. The wlan was still shown as connected in . At other times, it was unbearably slow. Sometimes it was difficult to reconnect after that.
Now I set my router to unprotected WLan, just for the sake of test. The connection with my Polaris seems more stable. I will keep testing.
In both situations there is something that puzzles me. In Settings-Connections-Wireless Lan, Main tab, it shows:
Tx speed = 54 Mbps
Rx speed = 1 Mbps
Also in the Advanced tab, the status is always shown as "Associated to the network" ("Associato alla rete"). I never saw "Connected to the network" ("Connesso alla rete") here.
Is this right? Did anyone else experience problems with the Polaris WLan? Is it possible that it works ok with no encryption, and doesn't with WPA? Please help!
*update*: while I was typing I was looking closely at the Rx speed. It seems to jump anywhere from 1 to 54 Mbps (but mostly stays at 1). I did not move the Polaris during this test. The signal strenght is good. The WLan adapter of my PC (where I'm typing looking at my Polaris screen) shows it as "excellent" and the connection pc-router is absolutely fast and stable.
I have no clue of what it can be.
----------------
Lucio
WLAN Problems
This may not be related but I am managing to use a Netgear Router with WEP, however I do experience a lot of drop outs but more importantly I can't get any connections with the phone unless the battery saver setting is set for max performance. The phone also gets quite warm after 15 minutes operation on this setting.
Stuart
as enterpryse has suggested you could go to settings>connections> wireless Lan> Power mode and move the cursor to best performance.
let me know if anything changes.
Jackster said:
as enterpryse has suggested you could go to settings>connections> wireless Lan> Power mode and move the cursor to best performance.
Click to expand...
Click to collapse
I'd say this is the best bet too.
But if you still having trouble try to reconfig your router allowing basically anyone regardless of topology to connect with it. And try using your pc simultaneously to see if it’s the router.
It could also be certain pages that you browse or maybe you router is updating too frequently I had that problem the other day because but kept updating my router for me.
And how long does you device take before it get quite hot? would i be out of line if i said maybe its because you're insulating the device with your hand? (I know the device needs to be held lol but that might be the only answer to your problem unless it’s an excessive heat problem then I would consider contacting HTC / the battery manufacturer / processor manufacturer)
Well, I'll be...
I kept trying to duplicate the problem. I set my WiFi router back to WPA as it was before when I was getting problems. Same PSK.
But after the first bad experiences (and my previous post), no more problems. The Rx speed is usually 42 to 48 Mbps now. It looks like this was the indicator that something was wrong in my first attempts, when I always got Rx=1. At 42 or more, everyting goes fast: Opera, Fast GPS, Google Maps... And I did not experience any more connection drops, data flow hangs, or slowness in connecting to the WLan.
The WLan router was already working fine, since I was already connected to it with my pc. I cannot explain why it didn't almost work and it's working fine now. The only thing I changed was the WLan channel. Could this be an explanation?
Moebius61 said:
The only thing I changed was the WLan channel. Could this be an explanation?
Click to expand...
Click to collapse
Of course, are there any other wlans around you? If they are on the same channel your router goes down with the speed till a stable connection is established.
Even if you have other wireless device e.x mouse, headset, keyboard. They often transmit on the 2,4GHz band an interfere with wlans.
Can't even load wireless mode!
I've just received my Touch Cruise and have started setting things up. I'm a previous owner of the Hermes so I know my way around the device. Or so I thought...
Using Comm Manager to start up wireless lan, when I click on the button, it thinks for a while but doesn't load up WLAN. The button stays in the "off" setting. Tried pressing a few times, no luck.
Tried switching off all other connection types and just switching on WLAN - still doesn't work. Tried using the hotlink via "Wireless LAN" icon through settings/connections to turn WLAN on. Still no luck. Resetting makes no difference.
Phone is otherwise working brilliantly. Looks like a driver issue, as I had a similar problem from time to time on the Hermes with Black ROM. Any ideas on what else I could try?
le_paulo
"Resetting makes no difference."
Did u do a soft or hard reset?
@Jackster - both soft and hard reset tried. No difference. But after the hard reset I re-installed Goodlink which threw up an error message "Communication port WIFI is locked down". Which suggests to me that WLAN is visible but access has been restricted somehow.
The question is why (??) and how to undo it...
Nothing a cooked firmware can't fix
Meantime, if anyone knows registry settings I should check to do some basic diagnostics, I'd appreciate it.
Moebius61 said:
Hi all,
I recently bought my HTC Polaris. It's the first wireless device I have, so I also bought a WiFi router to test it. I do not have any previous experience with WiFi on WinMobile, so the problems I am having could just be due to my newbie-ness...
I initially set my WLan router to WPA-PSK. I was able to get my Polaris connected, but at random times and repeatedly the device would stop receiving data (using IE, Google Maps...) with no apparent reasons. The wlan was still shown as connected in . At other times, it was unbearably slow. Sometimes it was difficult to reconnect after that.
Now I set my router to unprotected WLan, just for the sake of test. The connection with my Polaris seems more stable. I will keep testing.
In both situations there is something that puzzles me. In Settings-Connections-Wireless Lan, Main tab, it shows:
Tx speed = 54 Mbps
Rx speed = 1 Mbps
Also in the Advanced tab, the status is always shown as "Associated to the network" ("Associato alla rete"). I never saw "Connected to the network" ("Connesso alla rete") here.
Is this right? Did anyone else experience problems with the Polaris WLan? Is it possible that it works ok with no encryption, and doesn't with WPA? Please help!
*update*: while I was typing I was looking closely at the Rx speed. It seems to jump anywhere from 1 to 54 Mbps (but mostly stays at 1). I did not move the Polaris during this test. The signal strenght is good. The WLan adapter of my PC (where I'm typing looking at my Polaris screen) shows it as "excellent" and the connection pc-router is absolutely fast and stable.
I have no clue of what it can be.
----------------
Lucio
Click to expand...
Click to collapse
I got the same problem. I changed the connection settings of ActiveSync to
allow wireless connections when connected to a desktop computer.
Maybe this will fix your problem.
session said:
I got the same problem. I changed the connection settings of ActiveSync to
allow wireless connections when connected to a desktop computer.
Maybe this will fix your problem.
Click to expand...
Click to collapse
Good but where did you find this option on ActiveSync ? I just see an option whith BT not Wifi ?
Moebius61 said:
Hi all,
I recently bought my HTC Polaris. It's the first wireless device I have, so I also bought a WiFi router to test it. I do not have any previous experience with WiFi on WinMobile, so the problems I am having could just be due to my newbie-ness...
I initially set my WLan router to WPA-PSK. I was able to get my Polaris connected, but at random times and repeatedly the device would stop receiving data (using IE, Google Maps...) with no apparent reasons. The wlan was still shown as connected in . At other times, it was unbearably slow. Sometimes it was difficult to reconnect after that.
Now I set my router to unprotected WLan, just for the sake of test. The connection with my Polaris seems more stable. I will keep testing.
In both situations there is something that puzzles me. In Settings-Connections-Wireless Lan, Main tab, it shows:
Tx speed = 54 Mbps
Rx speed = 1 Mbps
Also in the Advanced tab, the status is always shown as "Associated to the network" ("Associato alla rete"). I never saw "Connected to the network" ("Connesso alla rete") here.
Is this right? Did anyone else experience problems with the Polaris WLan? Is it possible that it works ok with no encryption, and doesn't with WPA? Please help!
*update*: while I was typing I was looking closely at the Rx speed. It seems to jump anywhere from 1 to 54 Mbps (but mostly stays at 1). I did not move the Polaris during this test. The signal strenght is good. The WLan adapter of my PC (where I'm typing looking at my Polaris screen) shows it as "excellent" and the connection pc-router is absolutely fast and stable.
I have no clue of what it can be.
----------------
Lucio
Click to expand...
Click to collapse
Same problem here. Tx = 54mbit Rx = 1 mbit. Sometimes it works ok (with Rx 24-54mbit) but most of time there are huge drops so i cant use wlan at all.
My Nokia N95 works excellent at the same settings with same router.
My polaris wlan battery is set to "Max Performance".
Any clue?
weird
This is the second XDA Orbit 2 (Polaris) I've had in a week. I returned the first one because of WLAN problems. Exactly the same with this one.
I have a Netgear DG834GT, WPA-PSK encryption set to 'auto 108mbps' on channel 6. As other posters here, tried no encryption, changing channels, g only, g & b, as well as all the other suggestions on here. All I got was Rx=1, screen icon showing connected and no web access etc.
Then I noticed that my Orbit 2 mac address appeared on the Wireless Station Access list in my router wireless settings. I clicked on the Add button to add my XDA to the Trusted Wireless Station list (but Access Control was NOT switched on) and EUREKA, it started working, but not very reliably. Surely this shouldn't be necessary. I have had an XDA Orbit for a year with absolutely no problems, so I know my around the new one. There must be a problem with the Orbit 2 - surely we can't all be wrong?

Help please, Fuze Wifi issues

Anyone else having trouble with wifi? I have a connection to my home network and have used the 10 digit hex wep key. Even in the same room as the router (Linksys/Cisco), the signal strength is only about 50% and I can't even open a page in Opera.
SSID shows correctly
Mode: Infrastructure
Tx Rate: 54Mbps
RX Rate: 1 Mbps <-- is this the issue?
Channel 1
Advanced status shows: Associated to network.
Any ideas?
hopper13 said:
Anyone else having trouble with wifi? I have a connection to my home network and have used the 10 digit hex wep key. Even in the same room as the router (Linksys/Cisco), the signal strength is only about 50% and I can't even open a page in Opera.
SSID shows correctly
Mode: Infrastructure
Tx Rate: 54Mbps
RX Rate: 1 Mbps <-- is this the issue?
Channel 1
Advanced status shows: Associated to network.
Any ideas?
Click to expand...
Click to collapse
Bump
A call to HTC yielded nothing. I'm at my wits-end. Just turning wifi makes it almost impossible to load a website, I do better with just my marginal 3G service even though the wifi shows connected. Do you think a hard reset might help??
hopper13 said:
Bump
A call to HTC yielded nothing. I'm at my wits-end. Just turning wifi makes it almost impossible to load a website, I do better with just my marginal 3G service even though the wifi shows connected. Do you think a hard reset might help??
Click to expand...
Click to collapse
I'd also reset the wireless router too. Another possibility is there might be compatibility issues between the router and fuze. what router do you use? i'm using a linksys router and it's working fine. Obviously the signal the phone gets isn't as good as my Thinkpad's signal, but it does the job fine. I'm really enjoying this 3G speed, so I don't really use wifi that much - saves power!
only wifi problem i had was when i put in my wep key it rejected it the first time, and when i made it reconnect everything was fine. but at first it said my network was unavail.
Okay, try this - it's what worked for me:
Go to Settings -> Connections -> Wireless LAN.
On the bottom, choose the Power Mode tab.
Move the slider all the way over to Best Performance.
Fixed me right up.
FuzzyLogic_FC said:
Okay, try this - it's what worked for me:
Go to Settings -> Connections -> Wireless LAN.
On the bottom, choose the Power Mode tab.
Move the slider all the way over to Best Performance.
Fixed me right up.
Click to expand...
Click to collapse
yea that worked for me....but this is gonna drain the battery alot quicker right? whay wont it work the other way?
FuzzyLogic_FC said:
Okay, try this - it's what worked for me:
Go to Settings -> Connections -> Wireless LAN.
On the bottom, choose the Power Mode tab.
Move the slider all the way over to Best Performance.
Fixed me right up.
Click to expand...
Click to collapse
I found that in a windows mobile support forum as a stated solution for anothe HTC project and tried it also, it worked!
Thanks!
I'm having problems connecting to a WPA encrypted router and it's driving me crazy.
It just hangs and hangs and hangs, but never connects. If I put in an incorrect pass, or bad info- it immediately will fail to connect, but with the correct info- it will continue to attempt to connect, but never finish.
I've changed it to "Best Performance" but that made no difference.
^ Happened to me also. Turned out that I didn't add the Fuze's MAC address to my router's allowed devices list in wireless security.
I'm having the same problems as OP. I'm using the Fuze straight out from the box and I've tried adjusting the power settings as suggested and still no luck. I've also hard resetted to no avail. Any help is appreciated, thanks.
I don't have any issues with my wireless network, but I don't use an WPA encrypted router.
I have mine set to MAC address, and it work without issues.
I have a WEP encrypted router and it shows that I am connected. Do I need to set something up in settings -> connection -> connection? All I have are Media Net and "Work" listed. Seems like no one else is having this problem =/
I'm having a similar problem with my phone. I set my phone to maximum signal and the battery is just taking a hit. I can barely get a signal although it does work. I can't get the "free" ringtone to download off of their website, but no big loss. Wondering if the 3G/Edge would be a better bet.
Im also having a problem connecting to my network. it shows that im connected but doesnt now connect to the internet in internet explorer and other online apps. ive tryed...
restarting the router.
hard reset.
changing the power settings to high performance.
disabled hidden proxy as suggested on another thread.
exchanged my phone after being suggested by htc.
im using a linksys router. is it a compatibility issue?
this is driving me crazy; why are so many people having this problem?
I dont know if this goes here, but reading your problems, I think mine is a little different.
Where I live, in Mexico, almost everyone has internet service with the same Isp, who gives 2wire dlsmodem/routers with only a 10 digits wep encription (for default), the problem I have is that whenever I try to connect to any router (I've only tried with these) it asks for the wep key, but no matter what I put it always says that is incorrect. I tried disabling the encription and IT DOES work, but I dont control the other routers wich I want to connect to..
Any Ideas?
I am having the exact same problem. I could connect to an unsecured hotspot but can not connect to my WEP protected linksys/cisco router. It appears that linksys/cisco seems to keep popping up in this thread from folks having problem. Out of curiosity what model number of linksys/cisco do you have? Has anyone figured out a solution yet?
Go to configure wireless networks than go to the network adapters tab, click the first one IEEE 802.11 bg .... and make sure its set to user server assigned IP address.
Same problem here! tx @ 54 mbps rx @ 1mbps, and it doesn't change therefore i'm getting about 5meters distance before my connection becomes unstable (WTF). Using WPA2-PSK and set to performance.
P.S. all router incompatible comments are incorrect. There's a spec for .11 b/g and all hardware should be using this therefore it should work it's either a hardware fault or some settings aren't working correctly. BTW for me it's the same prob whether changing the ROM or radio, it doesn't change...
Same problem...never resolved? Fuze $200
http://forum.xda-developers.com/showpost.php?p=4213175&postcount=19
Solution
I may have a solution, it worked for me on 3 routers so far and dramatically increased reception over distance and connection stability.
Open your WiFi router settings, go to advanced settings and look for something like Beacon Period. If I got it right, this is the interval between position updates and default setting should be 100.
If you lower this number, it will update your devices position more accurately and get you better stability.
Be warned it will probably marginally increase AP radiation and decrease bandwidth of the wifi connection by a percent or two, however I didn't notice any difference but a huge stability increase.
I am using Beacon Period 50 at home but anything from 50-75 works for me.
Enjoy

Change WiFi transmit power in WinMo ?

Hi!
I have an HTC Diamond, and i'd like to extend battery life when using the WiFi network.
In my Nokia N79 (With Symbian S60 3rd Ed FP2) i can set the transmit power to 100 mW, 10 mW, or 4 mW.
And that of course extend battery life.
Why i'm asking this ? Because the PushMail solution in my company works with a propietary VPN Client, and can use 3G or WiFi, and being in the office, i prefer WiFi connection.
Can i set up that transmit power ? Perhaps in the registry ?
I'm NOT talking about Stand-By configurations in Power Management.
Specifically i'm speaking in change the transmit power of the WiFi.
Regards
Mac
doubt the qualcom cpu which control wifi, gps, 3g & bluetooth have their settings for such things in software
Thanks for the reply!
Do you know what chipset has that control ?
I want to give WinMo an other try, but, i had more battery life with Nokia, and THE change was modify the WiFi transmit power....
Regards
Mac
"Do you know what chipset has that control ?"
yes as I state all the features I listed are qualcomm and directly integrated into the cpu of the pda
Perhaps my question was not clear enough.
If i'd like to buy a device who had that transmit power control feature, and of course it's based in the chipset feature...
Do you know what device should be ?
Regards
Mac

Wi-fi connection dies and reconnects automatically

Hello
I just recivied my Motorola xoom 32gb 3g, and I have a problem. My Wifi dies every 2 minutes and then reconnects. It's an EU version, and I installed 3.2 OTA. Can someone help me plz?
romdroid. said:
Hello
I just recivied my Motorola xoom 32gb 3g, and I have a problem. My Wifi dies every 2 minutes and then reconnects. It's an EU version, and I installed 3.2 OTA. Can someone help me plz?
Click to expand...
Click to collapse
Sounds like your router and xoom aren't playing nice. Mobile wifi uses power save modes which aren't always properly supported in router firmware.
A few things you can try:
Set to pure A/B/G or N (N is best) no mixed protocol modes
If on N, set short guard interval off and set channel width to 20mhz
Set security to WPA-2 AES, no TKIP
upgrade router firmware or reboot it
If the network ever drops and doesn't reconnect, try https://market.android.com/details?id=org.wahtod.wififixer
It will detect the drop and automatically reconnect.
ZanshinG1 said:
Sounds like your router and xoom aren't playing nice. Mobile wifi uses power save modes which aren't always properly supported in router firmware.
A few things you can try:
Set to pure A/B/G or N (N is best) no mixed protocol modes
If on N, set short guard interval off and set channel width to 20mhz
Set security to WPA-2 AES, no TKIP
upgrade router firmware or reboot it
If the network ever drops and doesn't reconnect, try https://market.android.com/details?id=org.wahtod.wififixer
It will detect the drop and automatically reconnect.
Click to expand...
Click to collapse
Out of curiosity,
[*]If on N, set short guard interval off and set channel width to 20mhz
Whats the reasoning behind this and do you have a source?
ZanshinG1 said:
Sounds like your router and xoom aren't playing nice. Mobile wifi uses power save modes which aren't always properly supported in router firmware.
A few things you can try:
Set to pure A/B/G or N (N is best) no mixed protocol modes
If on N, set short guard interval off and set channel width to 20mhz
Set security to WPA-2 AES, no TKIP
upgrade router firmware or reboot it
If the network ever drops and doesn't reconnect, try https://market.android.com/details?id=org.wahtod.wififixer
It will detect the drop and automatically reconnect.
Click to expand...
Click to collapse
Thanks for your answer my router is a belkin f5d7230-4
how do I change these settings? I cant find it anywhere in routers settings
security level is wpa2 only
i have the latest fw
EDIT: nvm I found them, I only have: 11g only, 11b only and mixed (g and b) so I put it on 11g only I enabled turbo mode (what the hell that is) and extented range.
TheBlueRaja said:
Out of curiosity,
[*]If on N, set short guard interval off and set channel width to 20mhz
Whats the reasoning behind this and do you have a source?
Click to expand...
Click to collapse
40mhz width isn't supported on any Android device that I'm aware of. Auto detection of width seems to be problematic in my experience.
Short guard interval is terrible indoors due to radio echo.
Source is a decade plus of setting up wifi networks.
I forgot to mention enabling long preamble, which really helps with mobile wifi clients as they spin up from low radio power modes. That's more important than short guard interval.
Daft question ... you haven't got your wifi advanced settings set to kill the wifi when the screen sleeps have you ?
teffers said:
Daft question ... you haven't got your wifi advanced settings set to kill the wifi when the screen sleeps have you ?
Click to expand...
Click to collapse
That's not default as of Android 3.0.
Good question, though!
teffers said:
Daft question ... you haven't got your wifi advanced settings set to kill the wifi when the screen sleeps have you ?
Click to expand...
Click to collapse
nop I already disabled that. So far so good I also installed Wifi fix app from market, let's see how long it will last.
Still no luck :/
I get dc with ICS eos rom to...any more suggesitons?
Which router is causing (potential) trouble?
- I have both U-verse and Linksys (the old-model work-horse)
And... I'm also suffering from intermittent wifi issues. But, then this is (for me at least) a good thing as it keeps me focused on work and AWAY from youtube (etc).
Observable problem is that wifi simply drops when viewing youtube.
I had assumed either there was an issue with u-verse or Zoom - though wasn't pressed for an immediate fix since the Zoom did well at non-streaming web and email.
I know this is a long time after your question but if you are still having the issue I resolved mine. I just upgraded my home wireless and my xoom started having horrible download speeds. Ends up it cant handle AES and doesn't let you pick what encryption you want - it appears to use the highest encryption available on the ssid (I had tkip and aes enabled). When I killed AES and only left TKIP my xoom download speeds went back to normal. Issue is, you need AES for N wireless so if you can create a separate SSID for your xoom only, you can have the best of both worlds, N for everything else that supports it, and decent speeds for your xoom.
karlherr said:
I know this is a long time after your question but if you are still having the issue I resolved mine. I just upgraded my home wireless and my xoom started having horrible download speeds. Ends up it cant handle AES and doesn't let you pick what encryption you want - it appears to use the highest encryption available on the ssid (I had tkip and aes enabled). When I killed AES and only left TKIP my xoom download speeds went back to normal. Issue is, you need AES for N wireless so if you can create a separate SSID for your xoom only, you can have the best of both worlds, N for everything else that supports it, and decent speeds for your xoom.
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I think it's dangerous to assume that experience with your Xoom on a specific access point is universal.
Problems tend to be caused by a specific model/firmware of access point interacting with a specific Android device, with wifi drivers and chips being the most important part of the equation.
In my experience on many devices, AES is much less likely to be problematic than TKIP. TKIP is a less secure and less desirable protocol.
I am running N/AES on several access points with my Xoom with no link speed issues.

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