http://linuxexchange.org/questions/1334/wifi-got-drivers-but-no-signal<p>I'm running Debian Lenny on a Toshiba A200 notebook:</p> <pre><code>$ lspci | grep Wireless 03:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01) </code></pre> <p>So I installed linux-image 2.6.32 from the Debian backports repository:</p> <pre><code>$ uname -r 2.6.32-bpo-4-686 </code></pre> <p>This gives me, and loads the driver necessary for my wireless chipset.</p> <pre><code>$ lsmod | grep ath ath5k 103958 0 mac80211 122310 1 ath5k ath 5982 1 ath5k cfg80211 86941 3 ath5k,mac80211,ath led_class 1757 2 ath5k,sdhci # iwconfig lo no wireless extensions. eth0 no wireless extensions. wlan0 IEEE 802.11bg Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off </code></pre> <p>and: # ifconfig wlan0 up reports success. (# echo $? returns 0)</p> <p>But:</p> <pre><code>cat /proc/net/wireless Inter-| sta-| Quality | Discarded packets | Missed | WE face | tus | link level noise | nwid crypt frag retry misc | beacon | 22 wlan0: 0000 0 0 0 0 0 0 0 0 0 </code></pre> <p>So not surprisingly wicd finds no wireless networks. What have I missed? (wireless switch under notebook is on!)</p>enTue, 07 Sep 2010 07:24:33 -0400http://linuxexchange.org/questions/1334/wifi-got-drivers-but-no-signal/1338<p>I removed a reference to wlan0 from /etc/net/interfaces. wicd now finds wireless networks. Problem solved.</p>slothcheetahTue, 07 Sep 2010 07:24:33 -0400http://linuxexchange.org/questions/1334/wifi-got-drivers-but-no-signal/1338