Arch Linux

helioz

Member

Registered: 2012-01-14

Posts: 8

Unstable wifi.

Hi,
I set up my wifi recently.

[root@lappy /]# ping 192.168.1.1 -c 10
connect: Network is unreachable
[root@lappy /]# ping 192.168.1.1 -c 10
connect: Network is unreachable
[root@lappy /]# ping 192.168.1.1 -c 10
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_req=1 ttl=64 time=8.26 ms
64 bytes from 192.168.1.1: icmp_req=2 ttl=64 time=3.14 ms
64 bytes from 192.168.1.1: icmp_req=3 ttl=64 time=3.26 ms
64 bytes from 192.168.1.1: icmp_req=4 ttl=64 time=3.00 ms
64 bytes from 192.168.1.1: icmp_req=5 ttl=64 time=3.13 ms
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable

--- 192.168.1.1 ping statistics ---
10 packets transmitted, 5 received, 50% packet loss, time 9012ms
rtt min/avg/max/mdev = 3.008/4.162/8.261/2.052 ms
[root@lappy /]# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:"foobarl"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: s:om:eh:ex:nu:mb:er
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-19 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:6   Missed beacon:0
[root@lappy /]# iwlist wlan0 scan
wlan0     Scan completed :
          Cell 01 - Address: so:me:he:xn:um:ber
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70  Signal level=-8 dBm  
                    Encryption key:on
                    ESSID:"foobar"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000000411e3e98a
                    Extra: Last beacon: 80ms ago
                    IE: Unknown: 0006676C6F62616C
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: Unknown: 32040C121860
                    IE: Unknown: DD060010180200F4
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK

I set it up following the archwiki guide(The manual way).

[edit] I don't think it's hardware, because I can access wireless from both ubuntu and windows on the same setup.
Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01) , If you want to know!

PS. I do not know if such a question has been raised already, but I have no resources to check (I have no other connection!). I am not even sure if it belongs to newbie corner. I am sorry for that.

Last edited by helioz (2012-01-17 15:32:16)

onny

Member

From: Europe

Registered: 2010-08-07

Posts: 46

Website

Re: Unstable wifi.

Which driver do you use? Please post output of:

lsmod | egreb 'wl|brcm'

Furthermore, try to set a different, slower transmit rate and check if that solves your problem:

sudo iwlist wlan0 rate 5.5M fixed

helioz

Member

Registered: 2012-01-14

Posts: 8

Re: Unstable wifi.

I think I am getting the hang of it. I use b43 driver.
I solved it by using Network Manager with gui (I did nothing, everything happened automatically)
I have a very stable connection now. But please, I would like to trouble shoot it with cli.
Thanks,
Helioz

[edit] I'll call it solved after I do it with cli . btw I don't need a step by step instruction manual, just a link or idea would be great

Last edited by helioz (2012-01-19 16:53:03)