I have a wireless device on my computer. The operating system is Debian 7.
The file /etc/udev/rules.d/70-persistent-net.rules
recognizes the presence of the wireless device because two of the lines in the file read as follows:
# PCI device 0x8086:0x4236 (iwlagn)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:21:6a:b2:fd:42", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"
Also, I used other means to verify that the wireless device is recognized:
lspci | grep -i wireless
03:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300
dmesg | grep -i wireless
[ 47.624265] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
So, the system recognizes the wireless device.
However, when I entered the command: ifconfig -a
The wireless interface card (wlan0) was not listed.
These are the steps that I have taken so far:
Following the link
https://wiki.debian.org/WiFi and other links therein,
I downloaded and installed the firmware iwlwifi.
Next, loaded the related modules:
# modprobe -r iwlwifi ; modprobe iwlwifi
Next, logged out and logged in.
The problem still prevails. When, issuing the command "ifconfig -a", the interface wlan0 is not listed.
It is noteworthy that Debian 6 is installed on another partition, but there is no problem, regarding the wireless, with that version of Debian.
Any idea what is happening?