[SOLVED] Kubuntu 9.10 --> wifi connection doesn't work

[sandro54]

Hi guys,
I upgraded kubuntu to 9.10 and the wifi connection has stopped to work (with 9.04 was ok) . I removed KnetworkManager but the problem persists . I noted the cmd "iwconfig" found my wireless "wlan0" but the info
Access point: Not Associated
seems to me bad , could it (NOT ASSOCIATED) be the problem ??

please do you have some idea ??
thanks in advance

[sandro54]

Re: Kubuntu 9.10 --> wifi connection doesn't work

please do you know if Karmic has wifi problem ??

[jglen490]

Re: Kubuntu 9.10 --> wifi connection doesn't work

To the best of my knowledge, Karmic does not nave an intrinsic wifi problem. To resolve your problem, what wifi card do you have (specifically the chip).

My Buffalo G54 which has a normally problematic Broadcom chip, works well with knetworkmanager -- once I downloaded and installed the correct driver.

So a little info would be useful.

[sandro54]

Re: Kubuntu 9.10 --> wifi connection doesn't work

ok, in fact my environment is the following:

mobile vaio T8100 + Kubuntu 9.10 just installed (upgrading from 9.04)

following network environment:
-----------------USEFUL INFO -----------------
IP=192.168.1.1 (Router address)
ssid=”DILINK_WIRELESS” (network name)
encryption key = “VIVIFEDEGO54”
---------------------------------------------
configuration files wireless-

-------------------------------------file---resolv.conf---------------------
sandro@linux:~$ cat /etc/resolv.conf
nameserver 192.168.1.1
--------------------------------------file ----interfaces------------------
sandro@grass:~$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
####################### start wlan0 wireless connectio ############
auto wlan0
iface wlan0 inet dhcp
wireless-essid DLINK_WIRELESS
wireless-channel 11
wireless-mode managed
########################## start wpa_supplicant ##################
wpa-driver wext
wpa-conf /etc/wpa_supplicant.conf
###################### end wlan0 wireless connection #########
-----------------------------------------file -----wpa_supplicant.conf
sandro@grass:~$ cat /etc/wpa_supplicant.conf
######################### start section for supplicant ################
network={
ssid="DLINK_WIRELESS"
psk="VIVIFEDEGO54"
key_mgmt=WPA-PSK
proto=WPA
pairwise=CCMP TKIP
}
############################## end section ################################
list of network commands and relative results---
rass@kid:~$ sudo lshw -c network
[sudo] password for xgrass:
*-network
description: Ethernet interface
product: 88E8039 PCI-E Fast Ethernet Controller
vendor: Marvell Technology Group Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 15
serial: 00:1a:80:b4:93:f4
capacity: 100MB/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.23 firmware=N/A latency=0 link=no multicast=yes port=twisted pair
resources: irq:29 memory:f6000000-f6003fff ioport:3000(size=256)
*-network
description: Wireless interface
product: PRO/Wireless 4965 AG or AGN [Kedron] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:06:00.0
logical name: wmaster0
version: 61
serial: 00:1d:e0:a0:4e:0b
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=iwlagn latency=0 multicast=yes wireless=IEEE 802.11abgn
resources: irq:30 memory:fa000000-fa001fff
xgrass@Kid:~$
---------------------------------------------------------------------------------------------------------------------
grass@Kid:~$ sudo ifconfig -a
[sudo] password for xgrass:
eth0 Link encap:Ethernet HWaddr 00:1a:80:b4:93:f4
UP 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)
Interrupt:16

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:124 errors:0 dropped:0 overruns:0 frame:0
TX packets:124 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9648 (9.6 KB) TX bytes:9648 (9.6 KB)

wlan0 Link encap:Ethernet HWaddr 00:1d:e0:a0:4e:0b
inet6 addr: fe80::21d:e0ff:fea0:4e0b/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:45 errors:0 dropped:0 overruns:0 frame:0
TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5085 (5.0 KB) TX bytes:3410 (3.4 KB)

wlan0:avahi Link encap:Ethernet HWaddr 00:1d:e0:a0:4e:0b
inet addr:169.254.5.45 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1

wmaster0 Link encap:UNSPEC HWaddr 00-1D-E0-A0-4E-0B-00-00-00-00-00-00-00-00-00-00
UP RUNNING MTU:0 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)

xgrass@Kid:~$
-------------------------------------------------------------------------------------------------------------
xgrass@Kid:~$ sudo iwlist wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: 00:15:6D:A6:EF:C6
Channel:9
Frequency:2.452 GHz (Channel 9)
Quality=24/70 Signal level=-86 dBm
Encryption keyn
ESSID:"rete-privata M&G"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
11 Mb/s; 12 Mb/s; 18 Mb/s
Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=0000000059c09181
Extra: Last beacon: 2156ms ago
IE: Unknown: 0010726574652D70726976617461204D2647
IE: Unknown: 010882848B0C12961824
IE: Unknown: 030109
IE: Unknown: 2A0100
IE: Unknown: 32043048606C
IE: Unknown: DD180050F2020101870003A4000027A4000042435E0062322F 00
IE: Unknown: DD26000C42000000011E0400000000660203FF0F4D414E544F 56414E490000000000000000000000
Cell 02 - Address: 00:1B:11:3D:2E:4E
Channel:11
Frequency:2.462 GHz (Channel 11)
Quality=60/70 Signal level=-50 dBm
Encryption keyn
ESSID:"DLINK_WIRELESS"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
36 Mb/s; 48 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=00000003ff65ea64
Extra: Last beacon: 64ms ago
IE: Unknown: 000E444C494E4B5F574952454C455353
IE: Unknown: 010582848B962C
IE: Unknown: 03010B
IE: Unknown: 2A0100
IE: Unknown: 32080C1218243048606C
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK

xgrass@Kid:~$
------------------------------------------------------------------------------------------------------------
xgrass@Kid:~$ sudo ifconfig eth0 down
[sudo] password for xgrass:
xgrass@Kid:~$ sudo ifconfig wlan0 up
xgrass@Kid:~$ sudo iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

wmaster0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:"DLINK_WIRELESS"
Mode:Managed Frequency:2.462 GHz Access Point: Not-Associated
Tx-Power=15 dBm
Retry long limit:7 RTS thrff Fragment thrff
Encryption keyff
Power Managementff
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

xgrass@Kid:~$
-------------------------I tried to restart network ----------------------------------------------------------------------------
xgrass@Kid:~$ sudo /etc/init.d/networking restart
[sudo] password for xgrass:
* Reconfiguring network interfaces... there is already a pid file /var/run/dhclient.wlan0.pid with pid 2993
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/wlan0/00:1d:e0:a0:4e:0b
Sending on LPF/wlan0/00:1d:e0:a0:4e:0b
Sending on Socket/fallback
DHCPRELEASE on wlan0 to 192.168.1.1 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Invalid argument.
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/wlan0/00:1d:e0:a0:4e:0b
Sending on LPF/wlan0/00:1d:e0:a0:4e:0b
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 18
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
[ OK ]
xgrass@Kid:~$

---------------------ping the router------------------------------------------------------------
xgrass@Kid:~$ sudo ping 192.168.1.1
connect: Network is unreachable
xgrass@Kid:~$


---------------------------------------------------------------------------------------

please is there anybody to help me
I have necessity to resolve this problem .

thanks in advance

[sandro54]

Re: Kubuntu 9.10 --> wifi connection doesn't work

at last I solved the problem .
thanks to dibl note, I followed the indications on the email (Re:another wireless question) about "wicd" and KDE4 that is removing "knemo" and "network-manager" and install "wicd", so as following:

sudo apt-get remove --purge knemo network-manager

sudo apt-get update
sudo apt-get install wicd

reboot the system and now I have the wifi connection and all works.

I would like to know why a "new distro" must have these nonsense ??

thanks again dibl !!!