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[tlug] How to Re-Enable wlan0?
- Date: Wed, 25 Feb 2009 00:09:56 +0900
- From: CL <email@example.com>
- Subject: [tlug] How to Re-Enable wlan0?
- User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:188.8.131.52) Gecko/20090105 Thunderbird/184.108.40.206 Mnenhy/0.7.5.666
Kubuntu 8.10 on a Lenovo R-61
Because I usually use Ethernet at home -- which is how I am connecting right now -- I didn't notice exactly when in the recent spate of updates that my wireless lan quit working. Of course, I didn't notice until I needed it during a client visit. KNetworkmanager says *wlan0 wireless disabled* and, when the mouse pointer hovers over the icon it reports wlan0 as "down" and eth0 as "activated."
I have this sick feeling that I have missed something basic. But, the wlan0 network connection was working previously and I didn't consciosly do anything to turn it off ... I think.
Despite the how-tos I am still without wifi ... any polite suggestions would be appreciated.
checking hardware, I find:
~$ sudo lspci -v
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) Subsystem: Intel Corporation Device 1013 Flags: fast devsel, IRQ 17 Memory at df6ff000 (32-bit, non-prefetchable) [size=4K] Capabilities: [c8] Power Management version 2 Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [e0] Express Legacy Endpoint, MSI 00 Capabilities:  Advanced Error Reporting <?> Capabilities:  Device Serial Number 66-a0-43-ff-ff-3c-1f-00 Kernel driver in use: iwl3945 Kernel modules: iwl3945
I have confirmed that wpasupplicant is installed, then:
~$ iwconfig lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11abg ESSID:"" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Tx-Power=0 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.
~$ sudo ifconfig wlan0 up SIOCSIFFLAGS: No such deviceand:
~$ sudo lshw
description: Ethernet interface
physical id: 2
logical name: pan0
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A link=yes multicast=yeswhere do I go from here? I seem to be hitting brick walls.
- [tlug] How to Re-Enable wlan0?
- From: Stephen J. Turnbull
- Re: [tlug] How to Re-Enable wlan0?
- From: Alexander Danilov
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