Re: [gentoo-user] wireless dropping connections
On Wed, 31 Oct 2012 15:01:26 -0500 Paul Hartman wrote: > On Tue, Oct 30, 2012 at 6:29 AM, Alan McKinnon > wrote: > > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > > (802.11n) > > > > Several times a day, this thing just drops wireless. > > Has it always done this? If not, did anything change around the time > the problem started? Upgrading drivers/kernel, firmware on router, > change of internet connection speed, usage patters, etc. It's done it since new (which was recently) and nothing else changed. The XBox, tablets, phones and the missus' Windows laptop all show the same problem - so it's not Gentoo :-) Wireless was always stable on all my previous b/g routers, but this one is n and has been doing it out of the box. I switched it from channel 8 to channel 1 yesterday and now find it disconnects more often. Next step I think is to try 6 and 11 in that order whilst making the local hardware store owner weathly by buying trunking and moving the device > I had a D-Link router that would reboot itself every time there were > more than 100 or so connections. That meant any time something like > bittorrent was used, it would reboot every 10 or 15 minutes until the > network traffic died down. The same router would melt down under the > load from 10mbps network traffic. > > I have a Buffalo router running OpenWrt whose network disconnects > randomly, including wired network. The box doesn't reboot but > networking gets reset or something. Usually happens once or twice an > hour. Stock firmware and DD-WRT also suffer from widely-reported > disconnect issues, so this may be another defective design... I've seen issues like that many times too. It used to be I could go down to stores at work and book out a nice shiny new Cisco with pro-grade wireless chips and drivers, no question asked. Those things are rock solid and refuse to die, we have 1000s in the field that have never been touched for years. I can still book stuff out, but lately it's a Billion I'd get :-( > And I have a high-power microwave oven that kills all wifi connections > in the entire house every time it is used. The food comes out nice and > hot, though. :) :-) -- Alan McKinnon alan.mckin...@gmail.com
Re: [gentoo-user] wireless dropping connections
On Tue, Oct 30, 2012 at 6:29 AM, Alan McKinnon wrote: > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > (802.11n) > > Several times a day, this thing just drops wireless. Has it always done this? If not, did anything change around the time the problem started? Upgrading drivers/kernel, firmware on router, change of internet connection speed, usage patters, etc. I had a D-Link router that would reboot itself every time there were more than 100 or so connections. That meant any time something like bittorrent was used, it would reboot every 10 or 15 minutes until the network traffic died down. The same router would melt down under the load from 10mbps network traffic. I have a Buffalo router running OpenWrt whose network disconnects randomly, including wired network. The box doesn't reboot but networking gets reset or something. Usually happens once or twice an hour. Stock firmware and DD-WRT also suffer from widely-reported disconnect issues, so this may be another defective design... And I have a high-power microwave oven that kills all wifi connections in the entire house every time it is used. The food comes out nice and hot, though. :)
Re: [gentoo-user] wireless dropping connections
On Tue, 2012-10-30 at 21:26 +0200, Alan McKinnon wrote: > On Tue, 30 Oct 2012 11:45:37 + > Neil Bothwick wrote: > > > On Tue, 30 Oct 2012 13:29:43 +0200, Alan McKinnon wrote: > > > > > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > > > (802.11n) > > > > > > Several times a day, this thing just drops wireless. I doubt it's my > > > laptop as other devices in the house also get affected. > > > > Have you tried switching to a different channel, just in case it is > > caused by interference? > > > > > > > Actually, I hadn't tried that. I use channel 8 and this is at my house. > I've only ever seen 2 other neighbour's APs show up and they both use > channel 1. > > But then common sense kicked in. All previous APs have been 802.11g, > this is the first 802.11g, and it sits next to a cordless phone. I > really should mount the AP up high and extend the cable. > > > Keep in mind there are only 3 non-overlapping channels in the 11 channel allocation scheme ... channel 8 is not one of them. If you have no neighbours thats fine, but even (perhaps especially because of the hidden node effect/problem) distant stations can effect your throughput. Still, that phone you mention must be suspect number 1 :) BillK
Re: [gentoo-user] wireless dropping connections
On 10/30/2012 9:26 PM, Alan McKinnon wrote: Actually, I hadn't tried that. I use channel 8 and this is at my house. I've only ever seen 2 other neighbour's APs show up and they both use channel 1. But then common sense kicked in. All previous APs have been 802.11g, this is the first 802.11g, and it sits next to a cordless phone. I really should mount the AP up high and extend the cable. most cordless phones that works on 2.4 ghz are not suppose to affect your wireless connection. many of them wont even work in 2.4 ghz but at 5+ ghz. Regards -- Eliezer Croitoru https://www1.ngtech.co.il IT consulting for Nonprofit organizations eliezer ngtech.co.il
Re: [gentoo-user] wireless dropping connections
On Tue, 30 Oct 2012 19:47:34 +0800 Bill Kenworthy wrote: > outside interference? (usual is a microwave oven) - is there a device > closer to the AP that stays in better lock because the signal is > strong enough to override the interference? There is a long range Siemens cordless phone that hides behind the extra monitor :-) It's hidden because a. the power cable is short b. I hate phones and usually pretend to myself they don't exist > > BillK > > On Tue, 2012-10-30 at 13:29 +0200, Alan McKinnon wrote: > > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > > (802.11n) > > > Several times a day, this thing just drops wireless. I doubt it's my > > laptop as other devices in the house also get affected. When this > > happens I usually manually reconnect using wicd, it can do this > > automatically but there's a long timeout first before it realizes > > the connection was dropped. > > > > The router logs have very little in them, all I see is my laptop > > asking for and getting a new IP. Laptop logs show this: > > > > Oct 30 13:10:45 khamul dhcpcd[24141]: wlan0: carrier lost > > Oct 30 13:10:45 khamul kernel: [229075.169304] cfg80211: Calling > > CRDA to update world regulatory domain Oct 30 13:10:45 khamul > > kernel: [229075.214909] cfg80211: World regulatory domain updated: > > Oct 30 13:10:45 khamul kernel: [229075.214911] cfg80211: > > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > > Oct 30 13:10:45 khamul kernel: [229075.214913] cfg80211: (2402000 > > KHz > > - 2472000 KHz @ 4 KHz), (300 mBi, 2000 mBm) > > > > followed by the usual verbose junk of reconnection logs. > > > > I wouldn't even know where to start debugging this. The only unusual > > part of the setup is I don't use the router's dhcp server, that is > > done with dhcp-4.2.4_p2 on a separate wired Gentoo server. > > > > Anyone have a logical series of debug steps I can apply? > > > > > -- Alan McKinnon alan.mckin...@gmail.com
Re: [gentoo-user] wireless dropping connections
On Tue, 30 Oct 2012 11:45:37 + Neil Bothwick wrote: > On Tue, 30 Oct 2012 13:29:43 +0200, Alan McKinnon wrote: > > > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > > (802.11n) > > > > Several times a day, this thing just drops wireless. I doubt it's my > > laptop as other devices in the house also get affected. > > Have you tried switching to a different channel, just in case it is > caused by interference? > > Actually, I hadn't tried that. I use channel 8 and this is at my house. I've only ever seen 2 other neighbour's APs show up and they both use channel 1. But then common sense kicked in. All previous APs have been 802.11g, this is the first 802.11g, and it sits next to a cordless phone. I really should mount the AP up high and extend the cable. -- Alan McKinnon alan.mckin...@gmail.com
Re: [gentoo-user] wireless dropping connections
On Tue, Oct 30, 2012 at 01:29:43PM +0200, Alan McKinnon wrote: > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > (802.11n) > > Several times a day, this thing just drops wireless. I doubt it's my > laptop as other devices in the house also get affected. When this > happens I usually manually reconnect using wicd, it can do this > automatically but there's a long timeout first before it realizes the > connection was dropped. ack on the interference... Last year we experienced this identical problem, and changed the router to channel 11. It was the cordless phone on the same channel for us. -- Happy Penguin Computers >') 126 Fenco Drive ( \ Tupelo, MS 38801 ^^ supp...@happypenguincomputers.com 662-269-2706 662-205-6424 http://happypenguincomputers.com/ Don't top-post: http://en.wikipedia.org/wiki/Top_post#Top-posting
Re: [gentoo-user] wireless dropping connections
outside interference? (usual is a microwave oven) - is there a device closer to the AP that stays in better lock because the signal is strong enough to override the interference? BillK On Tue, 2012-10-30 at 13:29 +0200, Alan McKinnon wrote: > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > (802.11n) > Several times a day, this thing just drops wireless. I doubt it's my > laptop as other devices in the house also get affected. When this > happens I usually manually reconnect using wicd, it can do this > automatically but there's a long timeout first before it realizes the > connection was dropped. > > The router logs have very little in them, all I see is my laptop asking > for and getting a new IP. Laptop logs show this: > > Oct 30 13:10:45 khamul dhcpcd[24141]: wlan0: carrier lost > Oct 30 13:10:45 khamul kernel: [229075.169304] cfg80211: Calling CRDA > to update world regulatory domain Oct 30 13:10:45 khamul kernel: > [229075.214909] cfg80211: World regulatory domain updated: Oct 30 > 13:10:45 khamul kernel: [229075.214911] cfg80211: (start_freq - > end_freq @ bandwidth), (max_antenna_gain, max_eirp) Oct 30 13:10:45 > khamul kernel: [229075.214913] cfg80211: (2402000 KHz > - 2472000 KHz @ 4 KHz), (300 mBi, 2000 mBm) > > followed by the usual verbose junk of reconnection logs. > > I wouldn't even know where to start debugging this. The only unusual > part of the setup is I don't use the router's dhcp server, that is done > with dhcp-4.2.4_p2 on a separate wired Gentoo server. > > Anyone have a logical series of debug steps I can apply? >
Re: [gentoo-user] wireless dropping connections
On Tue, 30 Oct 2012 13:29:43 +0200, Alan McKinnon wrote: > I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP > (802.11n) > > Several times a day, this thing just drops wireless. I doubt it's my > laptop as other devices in the house also get affected. Have you tried switching to a different channel, just in case it is caused by interference? -- Neil Bothwick This universe is sold by mass, not by volume. Some expansion may have occurred during shipment signature.asc Description: PGP signature
[gentoo-user] wireless dropping connections
I'm using wicd-1.7.2.4-r1 and a NetGear DGN2200M v2 wireless AP (802.11n) Several times a day, this thing just drops wireless. I doubt it's my laptop as other devices in the house also get affected. When this happens I usually manually reconnect using wicd, it can do this automatically but there's a long timeout first before it realizes the connection was dropped. The router logs have very little in them, all I see is my laptop asking for and getting a new IP. Laptop logs show this: Oct 30 13:10:45 khamul dhcpcd[24141]: wlan0: carrier lost Oct 30 13:10:45 khamul kernel: [229075.169304] cfg80211: Calling CRDA to update world regulatory domain Oct 30 13:10:45 khamul kernel: [229075.214909] cfg80211: World regulatory domain updated: Oct 30 13:10:45 khamul kernel: [229075.214911] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Oct 30 13:10:45 khamul kernel: [229075.214913] cfg80211: (2402000 KHz - 2472000 KHz @ 4 KHz), (300 mBi, 2000 mBm) followed by the usual verbose junk of reconnection logs. I wouldn't even know where to start debugging this. The only unusual part of the setup is I don't use the router's dhcp server, that is done with dhcp-4.2.4_p2 on a separate wired Gentoo server. Anyone have a logical series of debug steps I can apply? -- Alan McKinnon alan.mckin...@gmail.com
