I have a strange problem with my wireless connection. Both SUSE and Ubuntu detected the my DWL G-510 card I am able to internet.

My connection seems so unstable it pauses between after a few seconds and continuous. This happens for internet, ssh connection from other computers, or even pinging the router(192.168.0.1)

The same behaviour for both Suse and Ubuntu. But the windows machine working fine.

I don;t think the problem is dns becase it happens while downloading a file as well as ssh connections.

Pinging various sites shows 35- 55 % packet loss.

Here are the things I tried.

Shutdown firewall.
disabled ipv6
downloaded new madwifi drivers and installed.

nothing helped so far.

Here are some outputs from the commads.

COMMAND: cat /etc/resolv.conf
nameserver 192.168.0.1
search site

COMMAND: ping -c 15 yahoo.com

=37.6 ms
64 bytes from w2.rc.vip.dcn.yahoo.com (216.109.112.135): icmp_seq=12 ttl=48 time=23.3 ms
64 bytes from w2.rc.vip.dcn.yahoo.com (216.109.112.135): icmp_seq=13 ttl=48 time=30.9 ms
64 bytes from w2.rc.vip.dcn.yahoo.com (216.109.112.135): icmp_seq=14 ttl=48 time=28.5 ms
64 bytes from w2.rc.vip.dcn.yahoo.com (216.109.112.135): icmp_seq=15 ttl=48 time=28.5 ms
ping -c 15 yahoo.com

--- yahoo.com ping statistics ---
15 packets transmitted, 9 received, 40% packet loss, time 14032ms
rtt min/avg/max/mdev = 23.318/27.559/37.601/4.268 ms

COMMAND ping 192.168.0.1

PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=127 time=5.90 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=127 time=1.82 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=127 time=1.79 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=127 time=2.06 ms
64 bytes from 192.168.0.1: icmp_seq=5 ttl=127 time=1.79 ms
64 bytes from 192.168.0.1: icmp_seq=6 ttl=127 time=1.81 ms
64 bytes from 192.168.0.1: icmp_seq=7 ttl=127 time=1.80 ms
64 bytes from 192.168.0.1: icmp_seq=8 ttl=127 time=1.80 ms
64 bytes from 192.168.0.1: icmp_seq=9 ttl=127 time=1.80 ms
64 bytes from 192.168.0.1: icmp_seq=15 ttl=127 time=1.81 ms

--- 192.168.0.1 ping statistics ---
15 packets transmitted, 10 received, 33% packet loss, time 14037ms
rtt min/avg/max/mdev = 1.793/2.242/5.907/1.224 ms

COMMAND ip route
192.168.0.0/24 dev ath0 proto kernel scope link src 192.168.0.101
169.254.0.0/16 dev ath0 scope link
127.0.0.0/8 dev lo scope link
default via 192.168.0.1 dev ath0
COMMAND tracepath yahoo.com

tracepath yahoo.com
1: 192.168.0.101 (192.168.0.101) 0.109ms pmtu 1500
1: 192.168.0.1 (192.168.0.1) asymm 2 4.023ms
1?: 10.216.192.1 (10.216.192.1) asymm 2
2: 10.216.192.1 (10.216.192.1) 13.848ms
3: 68.87.157.33 (68.87.157.33) 43.409ms
4: 10g-8-3-ar02.needham.ma.boston.comcast.net (68.87.144.241) 14.531ms
5: 12.125.47.49 (12.125.47.49) asymm 10 17.114ms
6: tbr1-p013301.cb1ma.ip.att.net (12.123.40.218) asymm 14 25.266ms
7: tbr2-cl16.n54ny.ip.att.net (12.122.10.22) asymm 13 25.997ms
8: ggr2-p3120.n54ny.ip.att.net (12.123.3.109) asymm 11 23.024ms
9: if-9-0.core1.NYY-NewYork.Teleglobe.net (207.45.196.129) asymm 18 90.272ms
10: if-15-0.core3.NQT-NewYork.Teleglobe.net (66.110.8.134) asymm 20 94.667ms
11: if-1-0.core2.AEQ-Ashburn.teleglobe.net (209.58.27.57) asymm 18 94.107ms
12: ix-11-0.core2.AEQ-Ashburn.teleglobe.net (209.58.27.38) asymm 16 29.666ms
13: so-3-1-0.pat2.pao.yahoo.com (216.115.101.130) asymm 19 94.964ms
14: ge-3-0-0-p251.msr2.scd.yahoo.com (216.115.106.183) asymm 17 89.559ms
15: ten-2-3-bas1.scd.yahoo.com (66.218.82.221) asymm 19 96.147ms
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Too many hops: pmtu 1500
Resume: pmtu 1500


ifdown ath0 and then ifup ath0 shows no Ip yet backgrounding.. message, but I am able to get an ip from the router.
I see this message in dmes output too.

My Router is DI-614+ and the card is dwl-g510. The have the latest firmwares.

Please help. I already spent 3 days on this.

Paul

And what is the output of iwconfig?

Here is the output from iwconfig

linux:~ # iwconfig
lo no wireless extensions.

sit0 no wireless extensions.

eth1 no wireless extensions.

ath0 IEEE 802.11g ESSID:"JOEWORKGROUP" Nickname:"linux"
Mode:Managed Frequency:2.437 GHz Access Point: 00:40:05:C8:44:88
Bit Rate:11 Mb/s Tx-Power:18 dBm Sensitivity=0/3
Retryff RTS thrff Fragment thrff
Encryption key:<MyWireless Key> Security modepen
Power Managementff
Link Quality=34/94 Signal level=-61 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

eth0 no wireless extensions.

I forgot to mention that this is Atheros chipset.

Also I tried shutting down eth0 and eth1 ( I have two wired Nics but not connected) using <ifdown> and also tried with disabling in BIOS, with apparantly no luck.

Thanks for your help. Let me know if you need any other info.

Paul

Maybe there is interference from other neigbouring APs? Does iwconfig output change over time, when there is alot of activity? Such as the fields "excessive retries" and "invalid misc", for example. You could also try switching between madwifi-old and madwifi-ng drivers and use the countrycode option when loading the ath_pci module. Your connection looks great otherwise, so I'm out of ideas. Sorry.

None of them worked so far. I don't have any nearby aps to have interference either. I will keep looking and update the post if I find something.

Thanks

Folks

I switched to a most recent version of ndiswrapper and it is all set.