Wifi Intermittent Slow Down Broadcom SDK 5.60 (r3702)

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What steps will reproduce the problem?
1. Reboot router
2. Works fine for a few hours (N client, WPA2/PSK/AES
3. Then intermittently becomes slow / fast and requires router reboot.

Original issue reported on code.google.com by balaran...@gmail.com on 25 Jan 2012 at 11:36

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Unfortunately, I can't reproduce problem.

Several customers has problem with adapters based on Atheros AR9285. It was 
solved by installing latest Atheros drivers.
Which Wi-Fi adapter you are using?

Original comment by lly.dev on 26 Jan 2012 at 6:40

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The adapter uses a Ralink RT3070 chipset

Original comment by balaran...@gmail.com on 28 Jan 2012 at 3:29

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I experienced something similar.
The slowness caused by the weak signal strength.
Nothing to do with the driver of the client card, I experienced this phenomenon 
with three different chipset.
It is not necessary to reboot the router, the "wl down" and "wl up" commands do 
the repair. After these commands the signal strength ok for a while.

Original comment by jmer...@gmail.com on 9 Feb 2012 at 7:39

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jmerthj:

Are you use WPA2/PSK/AES like issue creator? Can you provide "wl status" output 
in both cases - when signal is ok & not?

Seems to be problem is in new Broadcom SDK 5.60. Unfortunately there is no wl 
driver sources in public access, so we will try to upgrade to newer Broadcom 
SDK 5.100. It will take some time.

We can't rollback to old Broadcom SDK 5.10 due it don't support RT-N10U, 
RT-N12B1 & newer devices.

Original comment by lly.dev on 10 Feb 2012 at 12:08

• Changed title: Wifi Intermittent Slow Down Broadcom SDK 5.60 (r3702)
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I am using WPA2/PSK/AES too.

Here is the output of the "wl status" command when the signal is weak (RSSI = 
-70 dBm at the client adapter):

SSID: "xxxxxxxx"
Mode: Managed   RSSI: 0 dBm SNR: 0 dB   noise: -83 dBm  Channel: 12
BSSID: xx:xx:xx:xx:xx:xx    Capability: ESS ShortSlot 
Supported Rates: [ 1(b) 2(b) 5.5(b) 6(b) 9 11(b) 12(b) 18 24(b) 36 48 54 ]

After this I executed the "wl down" and "wl up" commands, and this is the 
result of the "wl status" (RSSI = -43 dBm @ client):

SSID: "xxxxxxxx"
Mode: Managed   RSSI: 0 dBm SNR: 0 dB   noise: -82 dBm  Channel: 12
BSSID: xx:xx:xx:xx:xx:xx    Capability: ESS ShortSlot 
Supported Rates: [ 1(b) 2(b) 5.5(b) 6(b) 9 11(b) 12(b) 18 24(b) 36 48 54 ] 

Further information:

wl ver

wl utility: 5.60.127.4 
wl0: Dec 16 2011 20:47:13 version 5.60.127.5 

wl revinfo

vendorid 0x14e4
deviceid 0x4329
radiorev 0x72056000
chipnum 0x4716
chiprev 0x1
chippackage 0xa
corerev 0x11
boardid 0x4cf
boardvendor 0x14e4
boardrev P218
driverrev 0x53c7f05
ucoderev 0x256013a
bus 0x0
phytype 0x4
phyrev 0x5
anarev 0x0

I set the "Wireless Mode" to "802.11g Only" because it is somewhat more stable 
than in "n" mode.

jmerthj

Original comment by jmer...@gmail.com on 10 Feb 2012 at 5:14

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Issue 299 has been merged into this issue.

Original comment by lly.dev on 16 Feb 2012 at 11:09

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Please check night builds r3836 or newer. It can be downloaded, for example, 
from:

http://asus.vectormm.net/rtn/
http://wpte.kicks-ass.net/downloads/Oleg Firmware/Nightlys/1.9.2.7-rtn/

Original comment by lly.dev on 29 Feb 2012 at 9:41

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I checked it with the r3926. Now the signal strenght is OK. I did not 
experience slow down. I hope others' experiences are the same.

wl ver

wl utility: 5.60.127.5 
wl0: Feb 25 2012 18:01:05 version 5.60.127.5  

Original comment by jmer...@gmail.com on 18 Mar 2012 at 7:04

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so, close issue.

Original comment by themiron.ru on 23 Mar 2012 at 3:43

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Problem is not solved for me, i tested with the new 4051 Build, after ~30 
Minutes the connection Speed droped from 300MBit/s to 13MBit/s. Back to 3497 
and everything is OK again.

Original comment by mrmmmk...@googlemail.com on 4 Apr 2012 at 6:45

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Reopen issue for reminder

Original comment by lly.dev on 27 Apr 2012 at 3:02

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Issue 323 has been merged into this issue.

Original comment by lly.dev on 15 May 2012 at 6:16

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Same problem here with 4051.
All works fine for about 40 mins, then all WiFi traffic became really slow 
(even the WebGui). A router reboot will solve the problem until the next lock.
I'll try to go back to 3497 like in comment 10 or to an original Asus WL-500W 
f/w (v 2.x or 3.x ???) to check if it's an hardware fault, cause my WL-500W is 
very hot.

Original comment by qma...@gmail.com on 31 May 2012 at 5:02

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Wi-Fi works just fine for me on r4298, RSSI is around ~45-50 dBm. If I'm close 
to router -28 dBm.

However I can't get 300mbit on intel 5300 with BCM43222, but it might be a 
problem of backward compatability Broadcom chip with Intel.

Original comment by spameden on 7 Jun 2012 at 1:29

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Mmmm... just replaced my old WL500W with a new RT-N16, same problem with 
r4051...
Now I'll move to r4298 just suggested.
I think it's officially a bug, cause I prepared RT-N16 manually, without upload 
of settings/flashfs.

Original comment by qma...@gmail.com on 11 Jun 2012 at 4:04

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try this one for WL500W: http://www.mediafire.com/download.php?54ukbec2uhad5gb 
(r4379)

Original comment by spameden on 17 Jun 2012 at 4:08

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No r4379 compiled for RT-N16 ?
Connection speed here jumps from 300Mbps to 11Mbps without any reason...

Original comment by qma...@gmail.com on 17 Jun 2012 at 5:29

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here you go http://www.mediafire.com/?zkzjk13crsdv17m

Original comment by spameden on 17 Jun 2012 at 8:26

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might be settings with your wireless NIC

what kind of card are you using and what are your wi-fi settings on the router?

Original comment by spameden on 17 Jun 2012 at 8:26

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Thanks spameden for your help.
I've not yet flashed r4379, my experience is with latest official r4330 on 
RT-N16.
The thing that is makin' me crazy is that wi-fi connection speed starts at 
300Mbps and remain stable for about 40 mins, than jumps down up to 11Mbps. The 
only way to have again a stable connection is to reboot the router. No 
"strange" services (aMule, rtorrent and so on) running during my test.
Here attached you'll find 2 screenshots of my RT-N16 Wireless confiduration.
It's working as AP only (no bridge) and without MAC access control.

About my PC side, it's an HP Mini 210.
At office no problems at all, connection to an Apple Airport Extreme is really 
stable even after many hours and with a lot of traffic.
Here is my HW/SW configuration for the NIC:

Broadcom 43225 802.11b/g/n
Driver version: 5.60.350.6

Advanced Settings:

802.11n Preamble: GreenField
Afterburner: Disabled
Roaming Association: Disabled
Bandwidth Capability: 11b/g 20/40MHz
BT-AMP: Enabled
Bluetooth Collaboration: Automatic
Minimun energetic consuption: Enabled
Roaming Decision: Default
MAC address: Not present
PLCP BSS: Auto (short/long)
AP Compatibility: Better throughouts
IBSS WZC channel number: 11
Path: USA
Output Power: 100%
Priority and VLAN: Disabled
Fragmentation: 2346
RTS: 2347
Mixed cells support: Disabled
Xpress Technology: Enabled
Roaming: Conservative
Speed: (802.11b/g): Better Speed
WMM: Automatic


Thanks again.

Max

Original comment by qma...@gmail.com on 19 Jun 2012 at 1:03

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Attachments:

• Wireless.Interface.jpg
• Wireless.Advanced.jpg

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Your router settings for Wireless is fine.

Do you experience the same behaviour with any other device?

You might need to set WMM on your client card to On instead of Auto.

Bandwidth Capability: 40Mhz

I'm not sure about 'Xpress Technology' is it turned on by default?

Original comment by spameden on 19 Jun 2012 at 1:05

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One thing you might also try is to uncheck '54g protection' on your router

Original comment by spameden on 19 Jun 2012 at 1:06

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A possible workaround is to restart wireless connection once in several 
minutes. Not to do this manually I have written a script executing "wl down; wl 
up" once in 5 minutes and an init script.
====
/opt/etc/init.d/S15wl_reset

#!/bin/sh
PIDFILE=/opt/var/run/wl_reset.pid
[ -f ${PIDFILE} ] && kill `cat ${PIDFILE}`
/opt/bin/wl_reset.sh&

====
/opt/bin/wl_reset.sh
#!/bin/sh

PIDFILE=/opt/var/run/wl_reset.pid
WL_LOG=/tmp/wl_reset.log

echo $$ > $PIDFILE;
while [ 1 ] ; do
        wl down 2>&1 >> $WL_LOG;
        wl up 2>&1 >> $WL_LOG;
        sleep 300 2>&1 >> $WL_LOG;
        echo "wl reset at "`date` >> $WL_LOG;
done
====
Hope that this will save somebody trouble.

Original comment by Fogei...@gmail.com on 17 Oct 2012 at 8:38

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LOL yeah nice workaround..

you'd drop all client connections with that script.

Just use instead 20Mhz Bandwidth instead of 40 - it might help.

Original comment by spameden on 17 Oct 2012 at 8:44

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I fully agree with you that the way it works is very stupid by design but it 
solves the slowdown problem (the network works at least). As for the 
connections dropping, I have not noticed any difference from the user's point 
of view (thanks for the reliable communication protocol).
To sum up, you should use such method only as a very last resort.

Original comment by Fogei...@gmail.com on 17 Oct 2012 at 8:57

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I just wanted to confirm that r3497 is the firmware that does not show the 
problem described above (RT-N16, WPA2/PSK,AES,20MHz, all clients with different 
chipsets experience the same signal drop, slowdown/disconnect). 
I tried several recent versions, including r4667 - the problem persists.

Original comment by paul.shm...@gmail.com on 19 Oct 2012 at 8:47

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А если поставить 144 mbps (20Mhz) 802.11n тоже 
отваливается?
============================================================
уже несколько дней тестирую

хочу сказать о двойственности ощущений
1. на компе в прямой видимости падения до 78 
мб\с при 20-30 килобайт\с нагрузке
2. на компе за стенкой бывает что в течении 2 
часов может держать 6.8 мегабит\с соединение 
(за место 13.5 как раньше на 40mhz), до роутера не 
достучаться ... через какое то время все 
нормализуется, но если перегрузить роутер 
... тут же все отлично сразу !

Original comment by den1230...@gmail.com on 21 Oct 2012 at 4:19

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на последней прошивке?

а чем вас r3497 не устраивает?

сидели бы на ней, да и все :)

Original comment by spameden on 21 Oct 2012 at 9:47

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Да меня все устраивает, просто есть ошибка 
думала что могу чем то поучаствовать ..
нет так нет , жаль что такая ошибка из 
версии в версию переходит, сама удивляюсь 
как это не мешает жить кто живет в N 
стандарте.

Original comment by den1230...@gmail.com on 21 Oct 2012 at 1:23

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r3497 с wifi конечно стабильная, но за 3 дня 
тестов 2 раза наглухо терял настройки. 
Откатываюсь на r4667, вариант с crontab и 
перезагрузкой 1 раз в 2 часа надежнее.

Original comment by IvanNi...@gmail.com on 21 Oct 2012 at 6:13

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что сбрасывалось?

а r3323 ?

Original comment by spameden on 21 Oct 2012 at 6:34

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настройки ключа wifi, после перехода обратно 
на r4667 аналогично завис в течении суток. 
перезагрузка не помогала, ssid был виден, но 
не пускал, помогало только подключение 
через провод и паразабивка ключа. в итоге 
сегодня перенастройка с 0 без 
использования сохраненных конфигов.

Original comment by IvanNi...@gmail.com on 22 Oct 2012 at 7:54

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у меня такая лажа тоже была один раз, причем 
пропало ни с того ни с сего - на r3323.

возможно перегрев модуля под нагрузкой - 
непонятно или какая-то злобная ошибка в wl.ko

Original comment by spameden on 22 Oct 2012 at 8:02

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Can you please post in english ?
Issue is very important for me, but there's no way to translate last 3 post 
using google...

Thanks

Original comment by qma...@gmail.com on 1 Nov 2012 at 3:02

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nothing important there, just a strange 'hangup' happened on both r3323 and 
r4667 - cured by re-flashing the firmware.

Original comment by spameden on 1 Nov 2012 at 3:08

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1.9.2.7-rtn-r4667 WIFI speed drops, and even became the latest firmware 
connection to disappear for a while, when the level is weak. And constantly 
jumping.

Original comment by pavlo1...@gmail.com on 6 Nov 2012 at 2:27

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as you can see issue is quite old.

what's the type of your router?

the only thing you can do is to try r3497

on the another note, you can try combining r3497 wireless drivers into latest 
trunk or r4667.

developers can't do anything with it because bug resides inside Broadcom's SDK. 
(it might be in wl.ko as well, i'm not sure).

Original comment by spameden on 6 Nov 2012 at 3:16

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SDK 5.10 branch revived at r4730. You can try to compile it:

svn co http://wl500g.googlecode.com/svn/branches/sdk510

r4731 equals to r4330 trunk release.

Original comment by lly.dev on 25 Nov 2012 at 2:10

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хоть что то сдвинулось, скажите 4731 нету тут 
http://asus.vectormm.net/rtn/
где я могу найти r4731 для rtn16

Original comment by den1230...@gmail.com on 26 Nov 2012 at 5:12

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установила 4731 начала тесты.

Баги или я просто не знаю 

Status & Log - USSD
перестал выдавать сообщения о сети и 
сигнале модем e392 , начиная с 3300 все 
выдавалось без проблем

Original comment by den1230...@gmail.com on 26 Nov 2012 at 11:55

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На прошивки r4731 за сутки все работает 
отлично в плане WI-FI N , но все равно пришлось 
скатиться опять на 3300 , не отдает 
информацию по модему e392 , ни как идеальную 
прошивку не найду..

Original comment by den1230...@gmail.com on 27 Nov 2012 at 9:18

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Could you please write in English?

Original comment by mauro...@tiscali.it on 27 Nov 2012 at 9:39

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I can only through the interpreter from google.On firmware r4731 issue with 
modem huawei e392, does not show information about the modem, the operator, 
signal and etc..I had to revert to 3300 there shows signal and works WIFI N

Original comment by den1230...@gmail.com on 27 Nov 2012 at 12:55

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подскажите где брать новые прошивки на 
основе 5.10 , понимаю все специалисты и сами 
делаете ,но тоже хочется жить и не мучиться 
..

Original comment by den1230...@gmail.com on 30 Nov 2012 at 12:20

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Since this branch is experimental now, it recommended for experienced users 
only.

For example, http://wpte.kicks-ass.net/downloads/Oleg 
Firmware/Nightlys/1.9.2.7-sdk5.10/

Original comment by lly.dev on 30 Nov 2012 at 4:48

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Thank you

Original comment by den1230...@gmail.com on 1 Dec 2012 at 5:51

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