sudo ifconfig wlan0 up => SIOCSIFFLAGS: Resource temporarily unavailable

[bleausardke]

Hi,

This is my first post here. I'm trying to install wireless usb Hercules HWNUm-300 but I keep getting the same problem. I'm using kubuntu 10.10

sudo ifconfig wlan0 up
always gives this as a result SIOCSIFFLAGS: Resource temporarily unavailable

I've tried installing using ndiswrapper and realtek linux driver, but I always get stuck at this part.

Anyone an idea how I can solve this? I've spent hours on google but can't find a solution that works.

Thanks

[spiky001]

Hi well I have googled as well plus searched forum post cant find any help on google I found some post but were all foriegn so could not read them. Have you just installed Ubuntu?

[bleausardke]

Yes, it's a fresh install.
The strange thing is installing the realtek linux driver worked before (I still couldn't connect, but the network was visible in network manager), but now, even after reinstalling I keep getting this error.

[spiky001]

Have you updated drivers via eth0 with usb in machine

[bleausardke]

Yes, but than I read that might be the problem. So I removed the drivers and started again and only plugged the usb in afterwards. Same problem.

[bleausardke]

Downgrading to kubuntu 10.4 has solved the problem. Wireless network is now visible, allthough I still can't connect.

[LeMeun]

hello bleausardke,

Can you post the result of this command typed in the terminal:

sudo iwconfig -a

and also

sudo lsmod

[bleausardke]

Here it is:

sofie@sofiepc:~$ sudo iwconfig -a
-a No such device

sofie@sofiepc:~$ sudo lsmod
Module Size Used by
ppdev 5259 0
ndiswrapper 184867 0
fbcon 35102 71
tileblit 2031 1 fbcon
font 7557 1 fbcon
bitblit 4707 1 fbcon
softcursor 1189 1 bitblit
vga16fb 11385 0
vgastate 8961 1 vga16fb
snd_hda_codec_via 27111 1
snd_hda_intel 22133 1
snd_hda_codec 74201 2 snd_hda_codec_via,snd_hda_intel
snd_hwdep 5412 1 snd_hda_codec
snd_ice1724 95837 2
snd_ice17xx_ak4xxx 2547 1 snd_ice1724
snd_ac97_codec 100646 1 snd_ice1724
ac97_bus 1002 1 snd_ac97_codec
snd_ak4xxx_adda 7364 2 snd_ice1724,snd_ice17xx_ak4xxx
snd_ak4114 7450 1 snd_ice1724
snd_pcm_oss 35308 0
snd_mixer_oss 13746 1 snd_pcm_oss
snd_pcm 70918 6 snd_hda_intel,snd_hda_codec,snd_ice1724,snd_ac97_c odec,snd_ak4114,snd_pcm_oss
snd_seq_dummy 1338 0
snd_pt2258 2911 1 snd_ice1724
snd_i2c 4398 2 snd_ice1724,snd_pt2258
snd_seq_oss 26722 0
snd_seq_midi 4557 0
snd_rawmidi 19056 2 snd_ice1724,snd_seq_midi
snd_seq_midi_event 6003 2 snd_seq_oss,snd_seq_midi
snd_seq 47263 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_timer 19098 2 snd_pcm,snd_seq
nouveau 467624 2
snd_seq_device 5700 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
psmouse 63245 0
ttm 50071 1 nouveau
asus_atk0110 9017 0
drm_kms_helper 29297 1 nouveau
snd 54180 23 snd_hda_intel,snd_hda_codec,snd_hwdep,snd_ice1724, snd_ac97_codec,snd_ak4xxx_adda,snd_ak4114,snd_pcm_ oss,snd_mixer_oss,snd_pcm,snd_pt2258,snd_i2c,snd_s eq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_devic e
serio_raw 3978 0
drm 163098 4 nouveau,ttm,drm_kms_helper
agpgart 31788 2 ttm,drm
i2c_algo_bit 5028 1 nouveau
i2c_piix4 8527 0
soundcore 6620 1 snd
snd_page_alloc 7172 2 snd_hda_intel,snd_pcm
lp 7028 0
parport 32635 2 ppdev,lp
ohci1394 27238 0
floppy 53080 0
ieee1394 81213 1 ohci1394
ahci 32232 0
atl1e 28146 0
pata_atiixp 3148 3

sudo iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11g ESSID:off/any
Mode:Managed Frequency:2.457 GHz Access Point: Not-Associated
Bit Rate:65 Mb/s Tx-Power:20 dBm Sensitivity=0/3
RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

[LeMeun]

and if you type ifconfig

then ifconfig -a

[bleausardke]

sofie@sofiepc:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 90:e6:ba:a2:9d:fc
inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::92e6:baff:fea2:9dfc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1492 Metric:1
RX packets:9598 errors:0 dropped:0 overruns:0 frame:0
TX packets:8703 errors:0 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:9150083 (9.1 MB) TX bytes:1436504 (1.4 MB)
Interrupt:27

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:40 errors:0 dropped:0 overruns:0 frame:0
TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2000 (2.0 KB) TX bytes:2000 (2.0 KB)

wlan0 Link encap:Ethernet HWaddr 00:08:d3:82:3c:88
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2038 (2.0 KB) TX bytes:5190 (5.1 KB)

[LeMeun]

ok i might be wrong but to me it does not seems like a driver problem so ndiswrapperis doing its job as shown in the lsmod (list the module loaded)

Wlan0 is up already?

sudo ifconfig (without the -a)?

[LeMeun]

if after typing sudo ifconfig your wlan0 is listed it mean that it is a network configuration problem.

if not wlan0 after typing sudo ifconfig it mean that the interface is there but not up (ifconfig -a shows all interfaces even if they are not up) so it is another problem.

are you on a laptop? if yes do you have a button to switch off wireless?

[bleausardke]

No, I'm on a desktop. I can see the network in network manager, I just can't connect to it. I'm not getting an IP address

[LeMeun]

try with iwconfig to set up the essid and the encryption then run dhclient wlan0 to get the ip

[bleausardke]

I've tried setting the essid and do'nt get an error.
But iwconfig wlan0 shows

wlan0 IEEE 802.11g ESSID:off/any
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Bit Rate:24 Mb/s Tx-Power:20 dBm Sensitivity=0/3
RTS thr:off Fragment thr:off
Power Management:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0


sudo dhclient wlan0
There is already a pid file /var/run/dhclient.pid with pid 1914
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/wlan0/00:08:d3:82:3c:88
Sending on LPF/wlan0/00:08:d3:82:3c:88
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 17
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

[LeMeun]

yes without the essid assigned the dhclient won't work on wifi interface.

you did a similar command when you tried to set the essid?
sudo iwconfig wlan0 essid MY_WIFI

If yes then network manager is blocking the iwconfig command, you could turn it off just to test if you can login to your access point with iwconfig but you might lost your connection with eth0 as well. Ending up with no internet at all.

Here is what i would try if i was in your shoes:

ps -ax (find the PID # of the network manager ex: 1234)

kill 1234 (kill the process for now, will resume if you reboot)

cd /etc/init.d/
./networking stop

now internet is off! and normally nothing is using your card

test the iwconfig command again
sudo iwconfig wlan0 essid MY_WIFI
then iwconfig to see if your essid has been assigned.

if you want your internet back you can reboot or simply type
sudo ifconfig eth0 up (should be up but just in case)
sudo dhclient eth0

firefox should show you ubuntu forum now if not reboot

[bleausardke]

I've tried, but can't assign essid. It remains off/any.
The strange thing is I know it was set correctly right after I installed the driver with ndiswrapper.
So I don't understand what made this change.

[miodziu]

I have had the same problem.
I have just tried to run


nm-applet

on console and then my wlan0 connection automatically appeared, with all settings I set earlier (essid, key, ...)
But when I kill nm-applet, connection is lost...

I don't know, why it work, but works. I use wifi to write this post :)

Why do nm-applet help? Anobody knows?

[bleausardke]

I'm on KDE so I don't have nm-applet. But I'll install gnome too and give it a try!

[LeMeun]

network manager-applet I suppose, you should give it a try

[bleausardke]

Hi all,

I reinstalled my system and now chose for ubuntu 10.4.
I got my wifi working with ndiswrapper (without prblems) but it's timing out frequently.
Maybe the connection isn't strong enough.
I don't know what was wrong under kubuntu, but this has been solved for me now.
Thanks for your help!

[miodziu]

I also resolve my problems... without system reinstall :)

And I knew, what was wrong!
The Network Manager uses option "keep connection configuration encrypted" and this is the reason, why iwconfig doesn't work!

Disable this option and then everything will be working (iwconfig etc...)

[A-rap]

I've been messin with this last 2 days. Those iwconfig and other commands aint havin no effect, because i just cant get wlan0 up.
Can somebody tell me where i could modify "The Network Manager uses option "keep connection configuration encrypted"".... ?
Thank you!

[Khufucius]

I am running into this as well.

I'm running Ubuntu 10.04 server, and using an EnGenius EUB9603H USB wireless device.

I've installed a driver using ndiswrapper, done a "sudo modprobe ndiswrapper," and when I try to bring the wlan0 interface up or down, I get the same "Resource temporarily unavailable" error.

Using "ifconfig -a" I can see the wlan0 device, with information that is similar to what was posted previously. It sounds like exactly the same issue.

I'd like to echo the previous poster's question -- is there any way to turn off this "keep connection information encrypted" switch?

Thanks.