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    #1

    Wicd: No wireless networks found

    Apologies in advance if this question's already been asked. I've recently installed 8.10 and my wireless can't seem to detect any wireless networks. I have an asus laptop with an Intel Corporation Wireless WiFi Link 5100, which I understand should be supported. The outputs of lspci, lshw -C network, iwconfig, ifconfig and cat /etc/network/interfaces all seem normal, but under both knetwork manager and wicd no wireless networks are detected. Even using sudo iwlist wlan0 scan gives "wlan0 No scan results"

    My wired ethernet works fine. Anyone got a solution? I'm hoping it's something simple like not using the right Wicd suplicant driver.

    Output effluvia to follow:

    lspci
    Code:
    00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03) 
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03) 
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation Device 062b (rev a1)
[b]03:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100[/b]
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernetcontroller (rev 02)
07:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
07:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
07:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
07:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)
    lshw -C network
    Code:
      *-network                                               
    description: Wireless interface                                 
    product: Wireless WiFi Link 5100                                 
    vendor: Intel Corporation                                    
    physical id: 0                                          
    bus info: pci@0000:03:00.0                                    
    logical name: wmaster0                                      
    version: 00                                           
    serial: 00:21:5d:36:4c:78                                    
    width: 64 bits                                          
    clock: 33MHz                                           
    capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless      
    configuration: broadcast=yes driver=iwlagn latency=0 module=iwlagn multicast=yes wireless=IEEE 802.11abgn          
 *-network                                               
    description: Ethernet interface                                 
    product: RTL8111/8168B PCI Express Gigabit Ethernet controller
    vendor: Realtek Semiconductor Co., Ltd.
    physical id: 0
    bus info: pci@0000:06:00.0
    logical name: eth0
    version: 02
    serial: 00:23:54:6c:41:6f
    size: 100MB/s
    capacity: 1GB/s
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full ip=192.168.0.3 latency=0 link=yes module=r8169 multicast=yes port=twisted pair speed=100MB/s
 *-network DISABLED
    description: Ethernet interface
    physical id: 2
    logical name: pan0
    serial: 96:a6:a9:8d:ac:28
    capabilities: ethernet physical
    configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yes
    iwconfig
    Code:
    lo    no wireless extensions.

eth0   no wireless extensions.

wmaster0 no wireless extensions.

wlan0   IEEE 802.11abgn ESSID:"network"
     Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
     Tx-Power=15 dBm
     Retry min limit:7  RTS thr:off  Fragment thr=2352 B
     Power Management:off
     Link Quality:0 Signal level:0 Noise level:0
     Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
     Tx excessive retries:0 Invalid misc:0  Missed beacon:0

pan0   no wireless extensions.
    ifconfig
    Code:
    eth0   Link encap:Ethernet HWaddr 00:23:54:6c:41:6f 
     inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
     inet6 addr: fe80::223:54ff:fe6c:416f/64 Scope:Link      
     UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1      
     RX packets:41987 errors:0 dropped:1136322527047 overruns:0 frame:0
     TX packets:37698 errors:0 dropped:0 overruns:0 carrier:0     
     collisions:0 txqueuelen:1000                   
     RX bytes:27943397 (27.9 MB) TX bytes:3711866 (3.7 MB)      
     Interrupt:250 Base address:0x8000                 

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:332 errors:0 dropped:0 overruns:0 frame:0
     TX packets:332 errors:0 dropped:0 overruns:0 carrier:0
     collisions:0 txqueuelen:0
     RX bytes:16924 (16.9 KB) TX bytes:16924 (16.9 KB)

wlan0   Link encap:Ethernet HWaddr 00:21:5d:36:4c:78
     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)

wmaster0 Link encap:UNSPEC HWaddr 00-21-5D-36-4C-78-00-00-00-00-00-00-00-00-00-00
     UP BROADCAST RUNNING 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)
    sudo cat /etc/network/interfaces
    Code:
    auto lo
iface lo inet loopback
    Tags: None
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    #2
    Re: Wicd: No wireless networks found

    Originally posted by Majidah
    but under both knetwork manager and wicd no wireless networks are detected.
    I guess you describe situation BEFORE wicd installation since wicd deinstalls knetwork manager so you should not have both at the same time.

    Anyway, I have also switched from knetwork to wicd (version 1.5.8. - btw make sure you have also the latest stable version). I have a different hw but at one point I have experienced the same symptoms as you mention. In my case the problem (most likely) was caused by the fact that my laptop was running on low battery and somewhere I read that below a certain battery level the system disables wireless interfaces. After I plugged in (I remember I also rebooted my router) my wicd got back.

    If this is not your case you may have a look at wicd specific discussion forum http://wicd.net/punbb/viewforum.php?id=2. Once you get this solved please let us know what has worked for you.
    Kubuntu user since August 2007&nbsp; <br /><br />CPU : Intel® Core™2 Duo processor, E6550-2,33GHz,1333MHz,4MBL2 BOX<br />RAM : DDR 2, 2x 512 MB . 800MHz . CL 5,0&nbsp; Kingston<br />VGA : GAINWARD Nvidia 8500GT 256MB, SilentFX, GDDR3, 2xDVI, PCI-E<br />Karmic Koala 32-bit
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      #3
      Re: Wicd: No wireless networks found

      As a matter of fact my laptop froze this morning and I had to make a hard restart after which there was no wireless connection in wicd. I tried restarts of both router and laptop with no luck. Finally I went with my laptop really close to my router - about half a meter and then it finally found the connection. After that I could go back to my usual place where I get 65% signal quality (which is not bad I guess).
      Kubuntu user since August 2007&nbsp; <br /><br />CPU : Intel® Core™2 Duo processor, E6550-2,33GHz,1333MHz,4MBL2 BOX<br />RAM : DDR 2, 2x 512 MB . 800MHz . CL 5,0&nbsp; Kingston<br />VGA : GAINWARD Nvidia 8500GT 256MB, SilentFX, GDDR3, 2xDVI, PCI-E<br />Karmic Koala 32-bit
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        #4
        Re: Wicd: No wireless networks found

        The trick with coming close to my router did not work this morning after another hard restart due to frozen system (caused by krusader). However, ath0 restart has brought back my wireless connection to wicd :

        Code:
        sudo ifconfig ath0 down
sudo ifconfig ath0 up
iwlist ath0 scan
        Kubuntu user since August 2007&nbsp; <br /><br />CPU : Intel® Core™2 Duo processor, E6550-2,33GHz,1333MHz,4MBL2 BOX<br />RAM : DDR 2, 2x 512 MB . 800MHz . CL 5,0&nbsp; Kingston<br />VGA : GAINWARD Nvidia 8500GT 256MB, SilentFX, GDDR3, 2xDVI, PCI-E<br />Karmic Koala 32-bit
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          #5
          Re: Wicd: No wireless networks found

          Well, after couple of days of having no problems, there is no wifi connection again on my compaq nc6000 laptop without an apparent reason. Nothing of the above steps works this time. On my another PC with the same Kubuntu version but of course with a different hardware, my wireless has been and still is working fine.

          I have spent hours googling for some kind of solution with no luck. I am not aware of any comprehensive procedure how to get this running smoothly and consistently. I can understand that in a new release some feature here and there may have still issues, but INTERNET, in this case via WIRELESS, just MUST WORK. Otherwise, and I hate to write this, there is hardly another option but to use "other system" until this gets solved. Any further ideas how to solve the original issue posted in this thread ?
          Kubuntu user since August 2007&nbsp; <br /><br />CPU : Intel® Core™2 Duo processor, E6550-2,33GHz,1333MHz,4MBL2 BOX<br />RAM : DDR 2, 2x 512 MB . 800MHz . CL 5,0&nbsp; Kingston<br />VGA : GAINWARD Nvidia 8500GT 256MB, SilentFX, GDDR3, 2xDVI, PCI-E<br />Karmic Koala 32-bit
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            #6
            Re: Wicd: No wireless networks found

            Same issue I can't coonect with Broadcom Corporation BCM4312 802.11b/g. It shows my device, but I can't connect to any networks.
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