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skiabox 11-12-2012 02:02 PM

Slackware does not see any wireless connection
I've just installed slackware v14 but I can't see any wireless network , although I installed NetworkManager.
Any ideas?

markush 11-12-2012 02:12 PM


start your wireless interface with

ifconfig wlan0 up
and execute the command

iwlist wlan0 scan
If this gives no output please post the output of

lspci -k | grep -iA3 wire
(all commands executed as root)


ReaperX7 11-12-2012 03:08 PM

Check and see if you might need firmware for your wireless card.

skiabox 11-12-2012 03:30 PM

Executing ifconfig wlan0 up gives :

SIOCSIFFLAGS: No such file or directory

markush 11-12-2012 03:32 PM

And what shows

Please post the output of

lspci -k | grep -iA3 wire

skiabox 11-12-2012 03:35 PM

lspci -k | grep -iA3 wire gives:

Subsystem: Dell Wireless 1397 WLAN Mini-Card
Kernel driver in use: b43-pci-bridge

skiabox 11-12-2012 03:37 PM

ifconfig gives details for 2 things : eth0 and lo

markush 11-12-2012 03:40 PM

Well, b43-pci-bridge looks like a broadcom device.

as ReaperX7 stated above, maybe it needs firmware.


skiabox 11-12-2012 03:42 PM

Is there any way I can check the current firmware version?

markush 11-12-2012 03:43 PM


Broadcom 43xx wireless support (mac80211 stack) (B43)


b43 is a driver for the Broadcom 43xx series wireless devices.

Check "lspci" for something like
"Broadcom Corporation BCM43XX 802.11 Wireless LAN Controller"
to determine whether you own such a device.

This driver supports the new BCM43xx IEEE 802.11G devices, but not
the old IEEE 802.11B devices. Old devices are supported by
the b43legacy driver.
Note that this has nothing to do with the standard that your AccessPoint
supports (A, B, G or a combination).
IEEE 802.11G devices can talk to IEEE 802.11B AccessPoints.

It is safe to include both b43 and b43legacy as the underlying glue
layer will automatically load the correct version for your device.

This driver uses V4 firmware, which must be installed separately using

This driver can be built as a module (recommended) that will be called "b43".
If unsure, say M.

Symbol: B43 [=m]
Type : tristate
Prompt: Broadcom 43xx wireless support (mac80211 stack)
Defined at drivers/net/wireless/b43/Kconfig:1
Depends on: NETDEVICES [=y] && WLAN [=y] && SSB_POSSIBLE [=y] && MAC80211 [=m] && HAS_DMA [=y]
-> Device Drivers
-> Network device support (NETDEVICES [=y])
-> Wireless LAN (WLAN [=y])
Selects: SSB [=m] && FW_LOADER [=y]
I'm not sure if it needs additional firmware, in the kernel-help there's no firmware mentioned


Alien Bob 11-12-2012 03:44 PM


Originally Posted by skiabox (Post 4827794)
... I installed NetworkManager.

What did you answer to this choice during install?

Which type of network setup would you like?
"static IP"      "Use a static IP address to configure ethernet"
"DHCP"          "Use a DHCP server to configure ethernet"
"loopback"      "Set up a loopback connection (modem or no net)"
"NetworkManager" "Autoconfigure network using NetworkManager"

If you did not choose the last option, then the NetworkManager daemon will not start on boot and you will not be able to configure your network using the NM appet.
Simple to cure though:

chmod +x /etc/rc.d/rc.networkmanager
followed by a reboot.


markush 11-12-2012 03:51 PM

Here's a link

They say that the card needs additional firmware, but I have a Broadcom-card in my subnotebook which once needed additional firmware, but with the recenct kernels (> 3) doesn't need it any more.
I made a mistake, it's not Broadcom in my computer.

Maybe you should try it out.


allend 11-12-2012 04:03 PM


Dell Wireless 1397 WLAN Mini-Card
Apparently this uses the BCM4312

SlackBuilds has scripts so that you can install the b43-fwcutter and b43-firmware packages you need

skiabox 11-12-2012 04:17 PM

So guys you suggest that I follow the other distributions part of this guide ?

skiabox 11-12-2012 04:48 PM

Trying to follow the instructions I get the following errors when I do 'make':

md5.c: In function 'MD5Final':
md5.c:239:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
md5.c:240:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

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