I recently upgraded my 12.10 installation on my Alienware m11x laptop, and lost both my network cards (wired and wireless network). How do I get them back? I would like a solution that doesn't involve going to my work computer and downloading files on a USB stick to get on the laptop; instead I would like to see a solution where the partial upgrade is reverted back to what was functioning before, so I can retry the upgrade.
The upgrade was aborted halfway through because the network went down and/or because the laptop was running out of batteries. I am not sure, but I don't think the upgrade was a problem in itself, rather the problem was that the upgrade was aborted in the middle of it all.
Output of lspci -nn includes:
0d:00.0 Network controller : Intel Corporations Centrino Wireless-N 1000 [8086:0083] 07:00.0 Ethernet controller : Atheros Communications Inc. AR8151 v2.0 Gigabit Ethernet [1969:1083]
sudo ifconfig wlan0 up yields:
wlan0: ERROR while getting interface flags: No such device
contains lo but nothing else (only loopback network device)
lshw -class Network returns:
*-network UNCLAIMED ...some info on AR8151 ethernet controller... *-network UNCLAIMED ...some info on wireless controller...
rfkill list all returns nothing at all