Wireless connection dropouts

English Network/Internet
1

I’m using SuSE 12.1 on my Envy 14 2000eg but have some problems with the Wireless connection. My wireless Card is a Intel 6230

It seems to work fine, but every few minutes it stops working for about a minute and works afterwards again as if nothing happened.
The system Tray Icon says I’m connected all the time but if I do a ping i see icmp_req=18 then abut 100 pings are lost and after that it resumes again after about 5 messages destination unreachable. (I have to lookup the exact error message this evening and post the ping - sorry).
All other devices run fine and even windows on the notebook performs flawlessly with wireless.

If I join other wireless networks it works without problems. The problem exists only with this wireless connection.

The router is a Tilgin VOOD IAD 452w (Tele2 Easybox). I even exchanged it against another router of the same brand but the problem persisted.

What can I do to figure out what the problem is and resolve it?

Thank you very much!

iwconfig:

lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:"My_WLAN"  
          Mode:Managed  Frequency:2.457 GHz  Access Point: ...
          Bit Rate=36 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=34/70  Signal level=-76 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:1  Invalid misc:18490   Missed beacon:0

lspci

09:00.0 Network controller: Intel Corporation Centrino Advanced-N 6230 (rev 34)

iwlist scan

lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: ...
                    Channel:10
                    Frequency:2.457 GHz (Channel 10)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"My_WLAN"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=...
                    Extra: Last beacon: 74ms ago
                    IE: Unknown: ...
                    IE: Unknown: ...
                    IE: Unknown: ...
                    IE: Unknown: ...
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: ...
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
IE: Unknown: ...
2

On 01/03/2012 01:56 AM, tabataba wrote:
>
> I’m using SuSE 12.1 on my Envy 14 2000eg but have some problems with the
> Wireless connection. My wireless Card is a Intel 6230
>
> It seems to work fine, but every few minutes it stops working for about
> a minute and works afterwards again as if nothing happened.
> The system Tray Icon says I’m connected all the time but if I do a ping
> i see icmp_req=18 then abut 100 pings are lost and after that it resumes
> again after about 5 messages destination unreachable. (I have to lookup
> the exact error message this evening and post the ping - sorry).
> All other devices run fine and even windows on the notebook performs
> flawlessly with wireless.
>
> If I join other wireless networks it works without problems. The
> problem exists only with this wireless connection.
>
> The router is a Tilgin VOOD IAD 452w (Tele2 Easybox). I even exchanged
> it against another router of the same brand but the problem persisted.
>
> What can I do to figure out what the problem is and resolve it?

I would suspect a firmware problem in the Tilgin router. Is an upgrade available?

When the wireless goes offline, is anything logged? Use dmesg to see what is there.

The only thing obviously wrong with your setup is the choice of a channel. Wifi
is NOT like television. The channels are 5 MHz apart, but each one is at least
20 MHz wide. As a result, only 1, 6, and 11 do not interfere with one another.
By using 10, you are getting interference with both 6 and 11.

3

Ping:

64 bytes from redirector.heise.de (193.99.144.80): icmp_seq=7230 ttl=242 time=87.9 ms
From 192.168.1.60 icmp_seq=7272 Destination Host Unreachable
From 192.168.1.60 icmp_seq=7275 Destination Host Unreachable
From 192.168.1.60 icmp_seq=7278 Destination Host Unreachable
From 192.168.1.60 icmp_seq=7281 Destination Host Unreachable
64 bytes from redirector.heise.de (193.99.144.80): icmp_seq=7289 ttl=242 time=600 ms

I would suspect a firmware problem in the Tilgin router. Is an upgrade available?

Product: HG1112
Version: HG111xx_SIP_01_03_01_46
Build user: arybchik
Build date and time: 2009/08/10-19:03:33

I don’t think there is a update available but will search for it today.

When the wireless goes offline, is anything logged? Use dmesg to see what is there.

[17620.640213] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=56667 LEN=368 
[17620.641059] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=56667 LEN=368 
[17760.476811] wlan0: deauthenticated from ...] (Reason: 1)
[17760.543040] cfg80211: Calling CRDA to update world regulatory domain
[17760.548528] cfg80211: World regulatory domain updated:
[17760.548531] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[17760.548534] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[17760.548537] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[17760.548539] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[17760.548541] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[17760.548543] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[17763.808454] wlan0: authenticate with ...] (try 1)
[17763.810173] wlan0: authenticated
[17763.810553] wlan0: associate with ...] (try 1)
[17763.816240] wlan0: RX ReassocResp from ...] (capab=0x451 status=0 aid=1)
[17763.816248] wlan0: associated
[17775.630537] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=48526 LEN=368 
[17775.631634] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=48526 LEN=368 
[17775.716687] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=50832 LEN=368 
[17775.893549] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=...] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=50832 LEN=368

sometimes i even get the part between SuSEfirewall multiple fimes.

> The only thing obviously wrong with your setup is the choice of a channel. Wifi
> is NOT like television. The channels are 5 MHz apart, but each one is at least
> 20 MHz wide. As a result, only 1, 6, and 11 do not interfere with one another.
> By using 10, you are getting interference with both 6 and 11.

Thanks I will correct this issue I thought a spacing of 4 would be enough.

4

On 01/04/2012 02:26 AM, tabataba wrote:
>
> Ping:
>
> Code:
> --------------------
> 64 bytes from redirector.heise.de (193.99.144.80): icmp_seq=7230 ttl=242 time=87.9 ms
> From 192.168.1.60 icmp_seq=7272 Destination Host Unreachable
> From 192.168.1.60 icmp_seq=7275 Destination Host Unreachable
> From 192.168.1.60 icmp_seq=7278 Destination Host Unreachable
> From 192.168.1.60 icmp_seq=7281 Destination Host Unreachable
> 64 bytes from redirector.heise.de (193.99.144.80): icmp_seq=7289 ttl=242 time=600 ms
> --------------------
>
>
>
>> I would suspect a firmware problem in the Tilgin router. Is an
> upgrade available?
>
> Product: HG1112
> Version: HG111xx_SIP_01_03_01_46
> Build user: arybchik
> Build date and time: 2009/08/10-19:03:33
>
> I don’t think there is a update available but will search for it
> today.
>
>> When the wireless goes offline, is anything logged? Use dmesg to see
> what is there.
>
>
> Code:
> --------------------
> [17620.640213] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=56667 LEN=368
> [17620.641059] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=56667 LEN=368
> [17760.476811] wlan0: deauthenticated from …] (Reason: 1)
> [17760.543040] cfg80211: Calling CRDA to update world regulatory domain
> [17760.548528] cfg80211: World regulatory domain updated:
> [17760.548531] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
> [17760.548534] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17760.548537] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [17760.548539] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [17760.548541] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17760.548543] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17763.808454] wlan0: authenticate with …] (try 1)
> [17763.810173] wlan0: authenticated
> [17763.810553] wlan0: associate with …] (try 1)
> [17763.816240] wlan0: RX ReassocResp from …] (capab=0x451 status=0 aid=1)
> [17763.816248] wlan0: associated
> [17775.630537] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=48526 LEN=368
> [17775.631634] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=48526 LEN=368
> [17775.716687] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=50832 LEN=368
> [17775.893549] SFW2-INext-DROP-DEFLT IN=wlan0 OUT= MAC=…] SRC=192.168.1.1 DST=192.168.1.60 LEN=388 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=1029 DPT=50832 LEN=368
> --------------------
>
>
> sometimes i even get the part between SuSEfirewall multiple fimes.
>
>> The only thing obviously wrong with your setup is the choice of a
> channel. Wifi
>> is NOT like television. The channels are 5 MHz apart, but each one is
> at least
>> 20 MHz wide. As a result, only 1, 6, and 11 do not interfere with one
> another.
>> By using 10, you are getting interference with both 6 and 11.
>
> Thanks I will correct this issue I thought a spacing of 4 would be
> enough.

Your firewall is dropping incoming UDP packets, which are likely the ping returns.

Do you see the same failures when you ping the router (192.168.1.1)?

5

> Your firewall is dropping incoming UDP packets, which are likely the ping returns.

> Do you see the same failures when you ping the router (192.168.1.1)?

The problem stays the same if I ping the router. The wireless gets deauthenticated and looses the connection until it reauthenticates itself.
If i disable SuSEfirewall it also changes nothing.

6

try the cmd ifstatus wlan0, when it’s say up you probilly have the dchcpd not running, this can be done by the cmd rcnetwork restart.
after this check the network with rcnetwork status and the card with ifstatus wlan0.
this will give you the information you need.

7

Weekend not at home have to test further next week.
It worked for some time but I don`t know what changes did it or if it was more a coincidence. setting the router to g only seemed to help also.

try the cmd ifstatus wlan0, when it’s say up you probilly have the dchcpd not running, this can be done by the cmd rcnetwork restart.
after this check the network with rcnetwork status and the card with ifstatus wlan0.
this will give you the information you need.

ifstatus wlan0

Network interface is managed by the NetworkManager -> skipping

rcnetwork status

redirecting to systemctl
network.service - LSB: Configure the localfs depending network interfaces
          Loaded: loaded (/etc/init.d/network)                                                                                      
          Active: active (exited) since Sat, 07 Jan 2012 22:14:09 +0100; 21min ago                                                  
         Process: 1077 ExecStart=/etc/init.d/network start (code=exited, status=0/SUCCESS)                                          
          CGroup: name=systemd:/system/network.service
8

The problem still persists.

I can reconect via “rcnetwork restart” to speedup the reconnection but still after 1min 20 sec up to 1 min 40 sec the connection drops again.

I tried dhcpcd wlan0
and setting
DHCLIENT_BIN="" -> DHCLIENT_BIN=“dhclient”
DHCLIENT_DEBUG=“no”-> DHCLIENT_DEBUG=“yes”
in “/etc/sysconfig/network/dhcp”

but it seems to change nothing. I still get deauthenticated and have to reauthenticate again.

9

On 01/16/2012 02:46 PM, tabataba wrote:
>
> The problem still persists.
>
> I can reconect via “rcnetwork restart” to speedup the reconnection but
> still after 1min 20 sec up to 1 min 40 sec the connection drops again.
>
> I tried dhcpcd wlan0
> and setting
> DHCLIENT_BIN="" -> DHCLIENT_BIN=“dhclient”
> DHCLIENT_DEBUG=“no”-> DHCLIENT_DEBUG=“yes”
> in “/etc/sysconfig/network/dhcp”
>
> but it seems to change nothing. I still get deauthenticated and have to
> reauthenticate again.

In this thread, you have never posted WHY it gets deauthenticated. The output of
the dmesg command should have that info.

10

I already posted the dmesg output:

> [17760.476811] wlan0: deauthenticated from …] (Reason: 1)
> [17760.543040] cfg80211: Calling CRDA to update world regulatory domain
> [17760.548528] cfg80211: World regulatory domain updated:
> [17760.548531] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
> [17760.548534] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17760.548537] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [17760.548539] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
> [17760.548541] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17760.548543] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
> [17763.808454] wlan0: authenticate with …] (try 1)
> [17763.810173] wlan0: authenticated

What else is missing?

11

On 01/16/2012 03:46 PM, tabataba wrote:
>
> I already posted the dmesg output:
>
>> [17760.476811] wlan0: deauthenticated from …] (Reason: 1)
>> [17760.543040] cfg80211: Calling CRDA to update world regulatory
> domain
>> [17760.548528] cfg80211: World regulatory domain updated:
>> [17760.548531] cfg80211: (start_freq - end_freq @ bandwidth),
> (max_antenna_gain, max_eirp)
>> [17760.548534] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)
>> [17760.548537] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz),
> (300 mBi, 2000 mBm)
>> [17760.548539] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz),
> (300 mBi, 2000 mBm)
>> [17760.548541] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)
>> [17760.548543] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz),
> (300 mBi, 2000 mBm)
>> [17763.808454] wlan0: authenticate with …] (try 1)
>> [17763.810173] wlan0: authenticated

We never see "deauthenticating (Reason X).

12

The first line reads:
>> [17760.476811] wlan0: deauthenticated from …] (Reason: 1)

where …] is the mac adress from the router if i’m not mistaken.

I seached a lot for this line but found mostly people with reason 3 7 and 11 and no list what the numbers stand for.

13

On 01/17/2012 01:26 AM, tabataba wrote:
>
> The first line reads:
>>> [17760.476811] wlan0: deauthenticated from …] (Reason: 1)
>
> where …] is the mac adress from the router if i’m not mistaken.
>
> I seached a lot for this line but found mostly people with reason 3 7
> and 11 and no list what the numbers stand for.

I know what the reasons mean, but I need the one YOUR system gets.

14

I’m sorry if I don’t understand what you need to help me. The reason I get is Reason 1 as shown in my dmesg posts.

I’m also posting my entire dmesg output so you can read it by yourself.

SUSE Paste

Do you need more than the dmesg output?

Thank you for your patience.

15

On 01/17/2012 12:36 PM, tabataba wrote:
>
> I’m sorry if I don’t understand what you need to help me. The reason I
> get is Reason 1 as shown in my dmesg posts.
>
> I’m also posting my entire dmesg output so you can read it by yourself.
>
> ‘SUSE Paste’ (http://susepaste.org/8ab2509b)
>
> Do you need more than the dmesg output?
>
> Thank you for your patience.

Reason 1 is “unspecified reason”. You would need to check your AP vendor to see
why they use that reason code to disconnect.

As I said in my first post, I think you have a firmware problem in that router/AP.