Ubuntu Breedy Problem with cisco airo wireless
I finally arrange time to upgrade my old laptop to breedy last week. Unfortunately, I found the KDE reponse is fairy slow. I am not sure why.
Another problem is the airo wireless card driver creates two interfaces --- eth1 and eth2, ifconfig returns sth. like:
eth1     Link encap:UNSPEC  HWaddr 00-09-E8-B4-CF-8D-6C-6F-00...
          BROADCAST MULTICAST  MTU:2312  Metric:1
          RX packets:2 errors:7 dropped:0 overruns:0 frame:7
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:105 (105.0 b)  TX bytes:0 (0.0 b)
          Interrupt:3 Base address:0x100
eth2      Link encap:Ethernet  HWaddr 00:09:E8:B4:CF:8D
          inet addr:192.168.0.101  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::209:e8ff:feb4:cf8d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3 errors:1014 dropped:0 overruns:0 frame:1014
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1186 (1.1 KiB)  TX bytes:920 (920.0 b)
          Interrupt:3 Base address:0x100
With this kind of configuration, the wireless network cannot be brought up by default.
In this post, byronclark told me airo card create one interface to rfmon mode to monitor sth. To overcome the problem, I changed /etc/iftab to bind the MAC address of my card to eth1, as:
eth1 mac 00:09:e8:b4:cf:8d arp 1
Now, it is OK.