[SOLVED] Wireless networks not showing up after change to interfaces file

jetty · 06-22-2015, 11:50 AM

Hi everyone,

This is my first post in any Q&A site

Yesterday I tried to clone my wiress NIC MAC so I edited /etc/network/interfaces. I didn't checked if it worked because I was able to clone my MAC through the GUI. The next time I booted my machine I tried to connect to a Wireless network, but when I checked the list of available networks I didn't see one, while there are. I undo the changes to the file and rebooted my computer, still I'm not able to see any.
I am using Debian 8 with Gnome 3.

This is the content of my interfaces file:
/etc/network/interfaces
source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback
iface wlan0 inet dhcp

Here is some information that might be useful:
lshw -class network

*-network DISABLED
description: Wireless interface
product: RTL8188EE Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 48:d2:24:53:c5:a4
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8188ee driverversion=3.16.0-4-amd64 firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 ioport:2000(size=256) memory:c8400000-c8403fff

ifconfig -a

wlan0 Link encap:Ethernet HWaddr 48:d2:24:53:c5:a4
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)

Please let me know if I can add some additional information.
Any help would be very much appreciated

Head_on_a_Stick · 06-22-2015, 12:05 PM

Try this:

Code:

# rfkill unblock all

If that doesn't work, post the output of:

Code:

rfkill list all

Check that any keyboard controls or firmware (BIOS) options for your wireless card are activated

jetty · 06-22-2015, 12:11 PM

Hi,

rfkill unblock all didnt't work.

Here's the output of rfkill list all

Code:

0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

EDIT:
Checked the BIOS, the wireless card is activated.

Head_on_a_Stick · 06-22-2015, 12:15 PM

Quote:

Originally Posted by Head_on_a_Stick

Check that any keyboard controls or firmware (BIOS) options for your wireless card are activated

↑ How about this?

If that doesn't work, post the output of:

Code:

ip l
lspci -knn|grep -iA2 net

jetty · 06-22-2015, 12:22 PM

Thanks for your replies,

The NIC is not hardware disabled. I double checked.

Here is the output of the commands:

Code:

# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:8c:fa:69:30:5f brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 48:d2:24:53:c5:a4 brd ff:ff:ff:ff:ff:ff


# lspci -knn|grep -iA2 net
01:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8162 Fast Ethernet [1969:1090] (rev 10)
    Subsystem: Toshiba America Info Systems Device [1179:ff1e]
    Kernel driver in use: alx
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188EE Wireless Network Adapter [10ec:8179] (rev 01)
    Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:0181]
    Kernel driver in use: rtl8188ee

Head_on_a_Stick · 06-22-2015, 12:26 PM

Try this:

Code:

# ip l set wlan0 up

jetty · 06-22-2015, 12:28 PM

I tried it, didn't work.

Head_on_a_Stick · 06-22-2015, 12:44 PM

What is the ouptut of `ip l` now?

jetty · 06-22-2015, 12:56 PM

Code:

# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
    link/ether 00:8c:fa:69:30:5f brd ff:ff:ff:ff:ff:ff
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether 48:d2:24:53:c5:a4 brd ff:ff:ff:ff:ff:ff

Head_on_a_Stick · 06-22-2015, 01:08 PM

Quote:

Originally Posted by jetty

/etc/network/interfaces
source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback
iface wlan0 inet dhcp

Either set up wlan0 in this file (ie, add an "auto wlan0" line and the "wpa-ssid" & "wpa-psk" lines) or remove the wlan0 line completely.

jetty · 06-22-2015, 01:12 PM

I removed the line wlan0 from the file and everything works properly now

Thank you so much.

Head_on_a_Stick · 06-22-2015, 01:13 PM

You're welcome -- I should have spotted that straight away really...