I am having this same problem. Were you able to resolve it? On Wednesday, September 11, 2013 3:24:41 PM UTC-4, BenMcDui wrote: > > Having installed the Edimax USB WiFi dongle, I am getting sttrange > behaviour: > > If my ethernet cable is plugged in, WiFi works. But if I unplug the cable, > WiFi stops working and does not get alive after reboot. > > I connect through USB and can find the following: > > # iwconfig > wlan0 IEEE 802.11bgn ESSID:"KangYatze" > Mode:Managed Frequency:2.432 GHz Access Point: > 00:0C:F6:D6:6A:F0 > Bit Rate=150 Mb/s Tx-Power=20 dBm > Retry long limit:7 RTS thr=2347 B Fragment thr:off > Encryption key:off > Power Management:off > Link Quality=31/70 Signal level=-79 dBm > Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 > Tx excessive retries:0 Invalid misc:1 Missed beacon:0 > lo no wireless extensions. > eth0 no wireless extensions. > usb0 no wireless extensions. > # ifconfig > eth0 Link encap:Ethernet HWaddr 90:59:af:4e:19:7f > inet addr:192.168.0.132 Bcast:192.168.0.255 Mask:255.255.255.0 > 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) > Interrupt:56 > 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:65536 Metric:1 > RX packets:100 errors:0 dropped:0 overruns:0 frame:0 > TX packets:100 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:9128 (9.1 KB) TX bytes:9128 (9.1 KB) > usb0 Link encap:Ethernet HWaddr a2:75:01:e1:d0:93 > inet addr:192.168.7.2 Bcast:192.168.7.3 Mask:255.255.255.252 > inet6 addr: fe80::a075:1ff:fee1:d093/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:5212 errors:0 dropped:0 overruns:0 frame:0 > TX packets:127 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:431464 (431.4 KB) TX bytes:24602 (24.6 KB) > wlan0 Link encap:Ethernet HWaddr 80:1f:02:ae:ee:ce > inet addr:192.168.0.133 Bcast:192.168.0.255 Mask:255.255.255.0 > inet6 addr: fe80::821f:2ff:feae:eece/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:191 errors:0 dropped:0 overruns:0 frame:0 > TX packets:9 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:15359 (15.3 KB) TX bytes:1054 (1.0 KB) > # lsusb > Bus 001 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un > 802.11n Wireless Adapter [Realtek RTL8188CUS] > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > # lsmod | grep rtl8192cu > rtl8192cu 88700 0 > rtlwifi 78422 1 rtl8192cu > rtl8192c_common 60882 1 rtl8192cu > mac80211 500877 3 rtlwifi,rtl8192c_common,rtl8192cu > # cat interfaces > > # ================================================================== > # The loopback network interface > auto lo > iface lo inet loopback > # ================================================================== > # WiFi > auto wlan0 > iface wlan0 inet static > address 192.168.0.133 > netmask 255.255.255.0 > gateway 192.168.0.1 > dns-nameservers 213.46.228.196 62.179.104.196 > wpa-ssid "*********" > wpa-psk "*********" > *(ssid and key made unreadable for this pub, however they can not be > doubted as the* > * connection works if eth0 activated)* > # ================================================================== > # wired ethernet > auto eth0 > iface eth0 inet static > address 192.168.0.132 > netmask 255.255.255.0 > gateway 192.168.0.1 > dns-nameservers 213.46.228.196 62.179.104.196 > # ================================================================== > # Ethernet/RNDIS gadget (g_ether) > # ... or on host side, usbnet and random hwaddr > iface usb0 inet static > address 192.168.7.2 > netmask 255.255.255.0 > network 192.168.7.0 > gateway 192.168.7.1 > I can see nothing missing, and the blue led in the dongle is on. > > Any help is highly appreciated! >
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