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Old 09-28-2009, 06:02 PM   #1
8bitpal
LQ Newbie
 
Registered: Sep 2009
Distribution: Debian Sid/Squeeze
Posts: 2

Rep: Reputation: 0
Wlan connected but no internet access on Debian Sid/Squeeze


Hi,
I run Debian Sid/Squeeze with kernel 2.6.30-1-amd64. The wireless hardware is a DLINK DWL-G122 C1.
After the last update of several packages my wireless internet stopped working.
I worked on this for hours and found many people with similar problems but all attempts to fix the problem failed.
I use wicd 1.5.9 and tried network-manager before but it is not working. Manual configuration also doesn't work, it did before before. The encryption type is WPA2 (worked always) with wext.

dmesg | grep wlan0 gives the following:

Code:
[ 8890.291963] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9128.594251] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9129.408602] wlan0: authenticate with AP 00:1c:4a:05:8b:a6
[ 9129.410119] wlan0: authenticated
[ 9129.410122] wlan0: associate with AP 00:1c:4a:05:8b:a6
[ 9129.413614] wlan0: RX AssocResp from 00:1c:4a:05:8b:a6 (capab=0x11 status=0 aid=1)
[ 9129.413617] wlan0: associated
[ 9129.425567] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 9218.596038] wlan0: deauthenticating by local choice (reason=3)
[ 9218.614752] wlan0: authenticate with AP 00:1c:4a:05:8b:a6
[ 9218.645523] wlan0: deauthenticating by local choice (reason=3)
[ 9282.472366] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9324.260204] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9325.081944] wlan0: authenticate with AP 00:1c:4a:05:8b:a6
[ 9325.084695] wlan0: authenticated
[ 9325.084697] wlan0: associate with AP 00:1c:4a:05:8b:a6
[ 9325.088208] wlan0: RX AssocResp from 00:1c:4a:05:8b:a6 (capab=0x11 status=0 aid=1)
[ 9325.088211] wlan0: associated
[ 9325.099409] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 9341.192886] wlan0: deauthenticating by local choice (reason=3)
[ 9341.211873] wlan0: direct probe to AP 00:1c:4a:05:8b:a6 try 1
[ 9341.244518] wlan0: deauthenticating by local choice (reason=3)
[ 9406.127477] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9409.354558] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 9410.168540] wlan0: authenticate with AP 00:1c:4a:05:8b:a6
[ 9410.170558] wlan0: authenticated
[ 9410.170561] wlan0: associate with AP 00:1c:4a:05:8b:a6
[ 9410.179547] wlan0: RX AssocResp from 00:1c:4a:05:8b:a6 (capab=0x11 status=0 aid=1)
[ 9410.179550] wlan0: associated
[ 9410.191503] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Furthermore ifconfig:
Code:
wlan0     Link encap:Ethernet  Hardware Adresse 00:17:9a:b7:1d:3d  
          inet Adresse:192.168.2.103  Bcast:192.168.2.255  Maske:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          RX packets:236 errors:0 dropped:0 overruns:0 frame:0
          TX packets:629 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:28946 (28.2 KiB)  TX bytes:78285 (76.4 KiB)
iwconfig wlan0 shows:
Code:
wlan0     IEEE 802.11bg  ESSID:"WLAN-HAASE"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1C:4A:05:8B:A6   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr:off
          Encryption key:xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx [2]   Security mode:open
          Power Management:off
          Link Quality=36/70  Signal level=-74 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
I think it's not about the DNS settings cause when I
ping 64.179.4.149:
Code:
PING 64.179.4.149 (64.179.4.149) 56(84) bytes of data.
From 192.168.2.103 icmp_seq=3 Destination Host Unreachable
From 192.168.2.103 icmp_seq=4 Destination Host Unreachable
^C
--- 64.179.4.149 ping statistics ---
7 packets transmitted, 0 received, +2 errors, 100% packet loss, time 6009ms
, pipe 2
cat /etc/resolv.conf:
Code:
nameserver 192.168.2.1
route -n:
Code:
Kernel-IP-Routentabelle
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 wlan0
So in conclusion: Nowhere in my system I can acess the internet which is present -according to wicd, nm, dhclient etc. I checked the rights, all users have the right to have access to the internet. I disabled IPv6 in the kernel and in my browser. I did a load of other little ideas given by people of several communities.
I hope that someone is able to help me.
Thanks in advance.
Regards,
8bitpal

Last edited by 8bitpal; 09-28-2009 at 06:49 PM. Reason: additional information
 
Old 09-30-2009, 09:00 AM   #2
handydan
Member
 
Registered: Mar 2005
Location: palmdale, california
Distribution: MEPIS 8; Debian (stable/testing)
Posts: 83

Rep: Reputation: 23
Wireless diagnostics

As a matter of procedure, I would always recommend disabling encryption for diagnostic purposes. If it still doesn't work with encryption off, then you've at least eliminated that as a suspect.
 
Old 09-30-2009, 09:06 AM   #3
alroger
Member
 
Registered: Apr 2008
Location: Brazil
Distribution: Ubuntu
Posts: 34

Rep: Reputation: 17
Can you ping 192.168.2.1?
Have you tried to reboot your wifi AP?
Some times I get strange problems with my tests, because the router or AP or even my servers ARP table gets messed up or doesn't update acordingly, thinking that I'm not who I'm trying to be... something like that. In that case I have to arp -d my IP ou fully reboot my server or router.
Another possibility is if you compile your own kernel that one of the default configs for networking might have changed...
 
Old 09-30-2009, 04:34 PM   #4
8bitpal
LQ Newbie
 
Registered: Sep 2009
Distribution: Debian Sid/Squeeze
Posts: 2

Original Poster
Rep: Reputation: 0
I did try those things you suggest, only without success.
But I guess I located the problem:
When I disable encryption on my router then it works. So it should be something with wpa_supplicant. I tried xsupplicant without success.
I tried to downgrade wpa_supplicant but it's no use, still the same problem.
Any ideas in that direction?
Regards, 8bitpal
 
  


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