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- - SIOCSIFFLAGS: No such file or directory (https://www.linuxquestions.org/questions/linux-wireless-networking-41/siocsifflags-no-such-file-or-directory-184147/)

The same problem when configure the wireless card to work

Hi all.
I tried to configure my wireless card to work but i get the same problem.

Quote:

[root@localhost ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
SIOCGIFFLAGS: No such device
Bringing up loopback interface: [ OK ]
Bringing up interface eth0:
Determining IP information for eth0... done.
[ OK ]
Bringing up interface wlan0: SIOCSIFFLAGS: No such file or directory
Error for wireless request "Set Bit Rate" (8B20) :
SET failed on device wlan0 ; Operation not supported.
SIOCSIFFLAGS: No such file or directory
Failed to bring up wlan0.

Then i try dmesg

Quote:

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
bcm43xx_mac80211: Adding Interface type 2
bcm43xx_mac80211: Error: Microcode "bcm43xx_microcode5.fw" not available or load failed.
bcm43xx_mac80211: Adding Interface type 2
bcm43xx_mac80211: Error: Microcode "bcm43xx_microcode5.fw" not available or load failed.
eth0: no IPv6 routers present
ADDRCONF(NETDEV_UP): eth0: link is not ready
tg3: eth0: Link is up at 100 Mbps, full duplex.
tg3: eth0: Flow control is on for TX and on for RX.
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
bcm43xx_mac80211: Adding Interface type 2
bcm43xx_mac80211: Error: Microcode "bcm43xx_microcode5.fw" not available or load failed.
bcm43xx_mac80211: Adding Interface type 2
bcm43xx_mac80211: Error: Microcode "bcm43xx_microcode5.fw" not available or load failed.

Here is my ifcfg-wlan0

Quote:

DEVICE=wlan0

#For Fixed IP Address
IPADDR=192.168.2.1
NETMASK=255.255.255.0
ONBOOT=yes
BOOTPROTO=none

#Wireless configuration
TYPE=Wireless
MODE=Managed
ESSID=homenet
#RATE=54Mb/s
DOMAIN=
DHCP_HOSTNAME=
HWADDR=
USERCTL=no
IPV6INIT=no

I always get trouble with network cards in linux.
Thanks

solution in my poor opinion

follow the instructions of this site : http://linuxwireless.org/en/users/Dr...b43#fw-b43-new

have a good day.

Firmware - SOLUTION

I had the same problem. When I would try to do:

$ sudo ifup wlan0

I would get: SIOCSIFFLAGS: No such file or directory.

When I typed in:

$ lspci | grep Network

I got: Network controller: Broadcom Corp BCM4318 ...

It turns out this is a common problem for Broadcom cards. (The "B43") I am running Ubuntu with Fluxbox and using WICD. WICD wouldn't even list my wlan0, and therefore wasn't showing any networks in the area. I finally got it working by going to:

http://linuxwireless.org/en/users/Dr..._and_b43legacy

and following the instructions for my distribution. All I did was:

$ sudo apt-get install b43-fwcutter

It asks if you want to download the firmware at the same time. I said yes, it installed, I restarted, and it worked. (WICD was able to find networks and connect.) I have been trying to fix this for awhile, so I hope this reply to an old thread still helps someone.