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wireless devices not connecting reliably...

 
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December 11, 2010 10:25 PM
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JLehman

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We got 3 wireless devices. A work laptop & two smartphones. About 4-5 times per week none of my wireless devices can't connect to the Netgear WNR3500v2/U/L using KongMod 15758M; until I recycle the power of the router. This gets pretty annoying, as you could imagine. The three devices come & go a lot. One setting I am not 100% sure of is the ACK Timing. It was always set to default, but after reading what it does, I now changed it to 0, to disable ACK Timing. Is there any other suggestions to try? I will update when I know more, like I said I just disabled the ACK Timing. Thanks & great MOD.

Jason

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Kong Avatar
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December 13, 2010 9:57 AM

As a workaround you could automatically restart the router by using:

Administration->Keep Alive->Schedule Reboot

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December 15, 2010 2:57 PM

Thanks for the response, but a scheduled reboot will not work for this situation. The reason is because the problem can happen at anytime. I could be on a wireless device during the day, then later in that evening; nothing. Have to restart the router. Changing the ACK Timing did NOT fix the issue. So I am still looking for an answer. Any ideas?

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December 16, 2010 3:12 AM

I doubt any wireless setting will fix this problem. There can be 3 possible reasons for it:

-bug in broadcom wireless driver in combination with the wireless clients you use
-hardware error
-memory problem, some process causes memory corruption

These problems are difficult to troubleshoot and require some debugging, I have not seen such a problem on dd-wrts bugtracker.

Probably the first choice would be to test tomato since it currently does not use the same broadcom wireless driver revision as dd-wrt, it also uses a different toolchain.

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December 16, 2010 7:45 AM

Ok, thanks. That, unfortunately was going to be my next move. I may start turning certain features off first, like dlna & samba; to see if something like that is causing memory corruption. I hope I like tomato, if I decide to try it. Hopefully its not too bad of a process to switch from your mod to tomato. I post what I find out. Bummer. thanks.

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December 20, 2010 9:06 PM

Well, fingers crossed; its been 6 days w/out any problem. The last change I made was set Wireless Channel Width to Auto. It was default, which i think was 20Mhz. Don't know why for sure, I hope its not a coincidence; but this is the longest I've been able to go w/out having to reboot the router.

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December 21, 2010 4:42 AM

Sounds good. I'm currently watching tomato forum for any possible problems with the latest broadcom driver. The latest original netgear relese also comes with a more recent broadcom driver.
Therefore I plan on updating this driver in my next releases.

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January 2, 2011 9:33 PM

Just had to reboot the router yesterday due to no wireless devices able to connect to it. That was the longest (a couple weeks) w/out any problems. I wont make any changes, just wanted to post an update. Hope the new driver helps.

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January 7, 2011 7:25 PM

The router is back to running terrible. Had to reset it 3 times today, to allow wireless devices to connect. Is there a timeframe when you will release a new update, that has the new driver?

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January 9, 2011 8:33 AM

Ok, now I noticed a pattern. If I have my laptop connected to the router via wifi, then I shut the lid of the laptop (putting the laptop into Standby mode); no devices can connect to the router wirelessly. I have to reset the router. Have you ever heard of anything like this? Any idea what's going on? I thinking this could be related to my main problem.

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January 10, 2011 6:16 AM

Hi JLehman,

this is really cool. You are the second person I know that suffered from this problem, person nr 1 is me:-)

I used to have this problem too at home but with a different router, happened to me when using a IBM Thinkpad(I think some ipw2200 wlan chipset) + Toshiba Laptop.
At somepoint my Thinkpad was upgraded to a DELL, after that this problem went away. Even stranger was the fact that this just happened if I closed the lid of the Thinkpad first, the other way around was never a problem.

It must be some strange incompatibility with certain wireless chipsets, that locks up the router wlan unit.

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January 10, 2011 10:18 AM

Ok,I to am using a Thinkpad. It has a Intel 5350 WiFi adapter. I will see if I can get a new driver for it. Thanks, for the info!

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July 7, 2011 4:35 PM

Just to update (sorry for late response) the problem went away when I installed your latest kong mod. Thanks.

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