wi fi doesnt work!!! plz help

[drhadidy]

today a very strange thing happened... my wifi suddenly stopped connecting to networks...
it can see the networks around but fails to connect in any way...
i use KDE... i couldnt connect to any of the preset networks or new...
after many trials i went to pcc... system... manage system services...
i found that wlan is stopped!!!! it was working fine about 4 hours ago...
and the on boot box was unchecked!!
i checked the on boot button...tried to start the service got a message:

/etc/Wlan/shared: line 71: [: too many arguments
/etc/Wlan/shared: line 71: [: too many arguments
shutting down WLAN devices: shutting down WLAN devices: wlanctl-ng operation not supported
FATAL: Module p80211 not found
[ OK ]
/etc/wlan/shared: line 71: [: too many arguments
starting WLAN Devices: FATAL: Module p80211 not found
failed to load p80211.0.

what shall i do?? plz i need to solve that very urgently
waiting ur replies

[muungwana]

when was the last time you updated?

did you change the kernel?

what does these commands give you?

uname -a

ifconfig

iwconfig

lspci

[djohnston]

Did you recently update a Broadcom wireless driver? Open Synaptic. Click File > History. Go back through the last few days' update history to check.

Did you recently install aircrack, airfart or airsnort?

[Yankee]

today a very strange thing happened... my wifi suddenly stopped connecting to networks...

You might have to reboot your modem.   In my area if you turn your
modem power off there's a good chance you'll have to reboot the modem,
because your dedicated line was temporarily lost.

If I leave my modem on the connection remains.  If I turn the modem
off and on everyday I sometimes lose my dedicated connection.

Then I have to call AT&T and go thru a lengthy procedure to reserve
the darn line again.   They actually recommend never turning the modem off.

I just get a screen on Firefox saying server not found tho the modem
says it's connected to something.   Something it doesn't recognize.

Might help might not.

My Fn F2 key turns the WiFi on and off, you didn't hit that by mistake ?

[drhadidy]

just made my synaptic update...after full updates it still doesnt work(
it was working yesterday then after reboot it just stopped working(
the output is as follows

[mo@localhost ~]$ uname -a
Linux localhost.localdomain 2.6.38.8-pclos3.bfs #1 SMP PREEMPT Fri Jul 8 18:01:30 CDT 2011 i686 i686 i386 GNU/Linux

[mo@localhost ~]$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:23:26:8D:54:49
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::223:26ff:fe8d:5449/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6457 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6876 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4901435 (4.6 MiB)  TX bytes:1224736 (1.1 MiB)
          Interrupt:42 Base address:0x4000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:164 errors:0 dropped:0 overruns:0 frame:0
          TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:12592 (12.2 KiB)  TX bytes:12592 (12.2 KiB)

wlan0     Link encap:Ethernet  HWaddr F0:7B:CB:2A:C7:8B
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

[mo@localhost ~]$


[mo@localhost ~]$ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"dottori"
          Mode:Managed  Access Point: Not-Associated   Tx-Power=17 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

[mo@localhost ~]$


[mo@localhost ~]$ lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 05)
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
[mo@localhost ~]$


what can i do ??

[Just17]

I suggest deleting the NIC for the wlan through PCC and then recreating it again.

[drhadidy]

I suggest deleting the NIC for the wlan through PCC and then recreating it again.

how to do that in easy steps plz??

[djohnston]

Open PCLinuxOS Control Center. Click Network & Internet in left pane, Remove a connection in right pane. Select your wireless connection as the Net Device. Next, etc., until connection has been deleted. Back in the Network & Internet section again, click Set up a new network interface. Set up the wireless connection again.

[drhadidy]

Open PCLinuxOS Control Center. Click Network & Internet in left pane, Remove a connection in right pane. Select your wireless connection as the Net Device. Next, etc., until connection has been deleted. Back in the Network & Internet section again, click Set up a new network interface. Set up the wireless connection again.

tried that it didnt work... finished all steps but when came to "start this connection now"  a problem happened and connection wasnt established

[djohnston]

tried that it didnt work... finished all steps but when came to "start this connection now"  a problem happened and connection wasnt established

Tells us nothing. What "problem"? What was the error message? Should we keep guessing what you see?

[muungwana]

what does this command give you?

iw wlan0 scan

[drhadidy]

what does this command give you?

iw wlan0 scan

[root@localhost ~]# iw wlan0 scan
BSS 04:c0:6f:1e:e7:c0 (on wlan0)
        TSF: 313015207052 usec (3d, 14:56:55)
        freq: 2412
        beacon interval: 100
        capability: ESS Privacy ShortSlotTime (0x0411)
        signal: -93.00 dBm
        last seen: 864 ms ago
        SSID: frack-off
        Supported rates: 1.0* 2.0* 5.5* 11.0*
        DS Parameter set: channel 1
        WPA:     * Version: 1
                 * Group cipher: TKIP
                 * Pairwise ciphers: TKIP
                 * Authentication suites: PSK
        ERP: Barker_Preamble_Mode
        Extended supported rates: 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
BSS b4:82:fe:0c:aa:42 (on wlan0)
        TSF: 313007584860 usec (3d, 14:56:47)
        freq: 2412
        beacon interval: 100
        capability: ESS Privacy ShortSlotTime (0x0411)
        signal: -87.00 dBm
        last seen: 847 ms ago
        SSID: samia anwar
        Supported rates: 1.0* 2.0* 5.5* 11.0*
        DS Parameter set: channel 1
        WPA:     * Version: 1
                 * Group cipher: TKIP
                 * Pairwise ciphers: TKIP
                 * Authentication suites: PSK
        ERP: Barker_Preamble_Mode
        Extended supported rates: 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
BSS 00:26:5a:51:88:80 (on wlan0)
        TSF: 35871539587 usec (0d, 09:57:51)
        freq: 2462
        beacon interval: 100
        capability: ESS Privacy ShortSlotTime (0x0411)
        signal: -57.00 dBm
        last seen: 195 ms ago
        SSID: dottori
        Supported rates: 1.0* 2.0* 5.5* 11.0* 18.0 24.0 36.0 54.0
        DS Parameter set: channel 11
        ERP: <no flags>
        Extended supported rates: 6.0 9.0 12.0 48.0
        WPA:     * Version: 1
                 * Group cipher: TKIP
                 * Pairwise ciphers: TKIP
                 * Authentication suites: PSK
                 * Capabilities: (0x0000)
[root@localhost ~]#

[drhadidy]

tried that it didnt work... finished all steps but when came to "start this connection now"  a problem happened and connection wasnt established

Tells us nothing. What "problem"? What was the error message? Should we keep guessing what you see?

this is exactly what was said...this is the message again

[muungwana]

wlan0 is up and it can scan for wireless networks, there doesnt seem to be any problem on the hardware or kernel.

The problem must be on the user level configuration tool

what does these command give you? ( you may want to remove any identifiable information before posting )

cat /etc/sysconfig/network-scripts/ifcfg-wlan0

try to connect again and then run this command and give its output when the connection fail

tail -n 20 /var/log/syslog

[drhadidy]

wlan0 is up and it can scan for wireless networks, there doesnt seem to be any problem on the hardware or kernel.

The problem must be on the user level configuration tool

what does these command give you? ( you may want to remove any identifiable information before posting )

cat /etc/sysconfig/network-scripts/ifcfg-wlan0

try to connect again and then run this command and give its output when the connection fail

tail -n 20 /var/log/syslog

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-wlan0
DEVICE=wlan0
BOOTPROTO=dhcp
ONBOOT=yes
METRIC=35
MII_NOT_SUPPORTED=no
USERCTL=yes
RESOLV_MODS=no
WIRELESS_MODE=Managed
WIRELESS_ESSID=dottori
WIRELESS_ENC_KEY=s:etisalatsd
WIRELESS_WPA_DRIVER=wext
WIRELESS_WPA_REASSOCIATE=no
IPV6INIT=no
IPV6TO4INIT=no
ACCOUNTING=yes
DHCP_CLIENT=dhclient
NEEDHOSTNAME=no
PEERDNS=yes
PEERYP=yes
PEERNTPD=no
[root@localhost ~]#



tried to connect and got this output as u asked

[root@localhost ~]# tail -n 20 /var/log/syslog
Jan 30 20:47:03 localhost klogd: cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jan 30 20:47:03 localhost klogd: cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211: Calling CRDA for country: US
Jan 30 20:47:03 localhost klogd: cfg80211: Regulatory domain changed to country: US
Jan 30 20:47:03 localhost klogd: cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Jan 30 20:47:03 localhost klogd: cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Jan 30 20:47:03 localhost klogd: cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
Jan 30 20:47:03 localhost ifplugd(wlan0)[2253]: Program executed successfully.
Jan 30 20:47:03 localhost ifplugd(wlan0)[2253]: Exiting.
Jan 30 20:47:05 localhost klogd: Kernel logging (proc) stopped.
Jan 30 20:47:05 localhost klogd: Kernel log daemon terminating.
Jan 30 20:47:06 localhost exiting on signal 15
[root@localhost ~]#