Hi, I installed ubuntu jaunty on an external USB drive (since I know more or less how to configure jaunty). I also installed karmic (kernel linux 2.6.31-17-generic) to test this karmic distribution. I have the following problem for configuring the network. On jaunty, my /etc/network/interfaces file was: Code: auto lo wlan0 iface lo inet loopback iface wlan0 inet dhcp wireless-key ABCD-EFGH-IJ wireless-essid ABCDEF netmask 255.255.255.0 channel 6 mode Managed metric 10 needhostname yes and the network worked, before I even connected via gdm or console. Keeping the same file does not work with karmic. At startup, I don't have wireless network. I can connect using the wireless tools in KDE and gnome, but I am not fully satisfied with this, because when I am connecting remotely, if the computer reboots I will not be able to be connected again. So I am trying to understand the new syntax in /etc/network/interfaces. My interface is still wlan0, since Code: sudo iwlist scan gives Code: lo Interface doesn't support scanning. eth0 Interface doesn't support scanning. wmaster0 Interface doesn't support scanning. wlan0 Scan completed : Cell 01 - Address: aa:bb:cc:dd:ee:ff Channel:6 Frequency:2.437 GHz (Channel 6) Quality=52/70 Signal level=-58 dBm Encryption key:on ESSID:"ABCDEF" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 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=00000004c49b000e Extra: Last beacon: 81308ms ago IE: Unknown: 00065253464D4A42 IE: Unknown: 010482848B96 IE: Unknown: 030106 IE: Unknown: 0406000200000000 IE: Unknown: 2A0100 IE: Unknown: 32080C1218243048606C vboxnet0 Interface doesn't support scanning. I tried some variants below in /etc/network/interfaces, inspired by posts on http://forum.ubuntu-fr.org/ concerning karmic and networking, and in particular I tried to use the keywords wireless-keymode, wireless-channel, etc. instead of keymode, channel... but nothing works, so I am stuck. Code: auto lo wlan0 iface lo inet loopback iface wlan0 inet dhcp wireless-mode Managed wireless-essid ABCDEF wireless-keymode restricted wireless-key ABCD-EFGH-IJ wireless-channel 6 metric 10 needhostname yes netmask 255.255.255.0 Code: ifconfig gives Code: eth0 Link encap:Ethernet HWaddr 00:0c:76:f1:f2:44 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:0 erreurs:0 :0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B) Interruption:19 Adresse de base:0xe800 lo Link encap:Boucle locale inet adr:127.0.0.1 Masque:255.0.0.0 adr inet6: ::1/128 Scope:Hôte UP LOOPBACK RUNNING MTU:16436 Metric:1 Packets reçus:8 erreurs:0 :0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 Octets reçus:480 (480.0 B) Octets transmis:480 (480.0 B) wlan0 Link encap:Ethernet HWaddr 00:18:f8:a9:f7:84 adr inet6: fe80::218:f8ff:fea9:f784/64 Scope:Lien UP BROADCAST MULTICAST MTU:1492 Metric:1 Packets reçus:7 erreurs:0 :0 overruns:0 frame:0 TX packets:7 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:1100 (1.1 KB) Octets transmis:944 (944.0 B) wlan0:avahi Link encap:Ethernet HWaddr 00:18:f8:a9:f7:84 inet adr:169.254.11.116 Bcast:169.254.255.255 Masque:255.255.0.0 UP BROADCAST MULTICAST MTU:1492 Metric:1 wmaster0 Link encap:UNSPEC HWaddr 00-18-F8-A9-F7-84-00-00-00-00-00-00-00-00-00-00 UP RUNNING MTU:0 Metric:1 Packets reçus:0 erreurs:0 :0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B) I also tried different network wifi cards, different wifi access points (netgear and linksys), and I cant make any of this work with /etc/netwkor/interfaces (unless I disable WEP). Any idea please ? Thank you !
I think you forgot some whitespace in /etc/network/interfaces. Code: auto lo wlan0 iface lo inet loopback iface wlan0 inet dhcp wireless-mode Managed wireless-essid ABCDEF wireless-keymode restricted wireless-key ABCD-EFGH-IJ wireless-channel 6 metric 10 needhostname yes netmask 255.255.255.0 should be Code: auto lo wlan0 iface lo inet loopback iface wlan0 inet dhcp wireless-mode Managed wireless-essid ABCDEF wireless-keymode restricted wireless-key ABCD-EFGH-IJ wireless-channel 6 metric 10 needhostname yes netmask 255.255.255.0 instead.
Thanks for the tip, Falko. I tried to insert whitespaces as you suggested. Unfortunately, the network does not work better (I restarted it using service networking --full-restart and also using ifdown -a ; ifup wlan0 to be sure). Now Code: ifdown -a gives Code: Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Invalid argument. and Code: iwconfig gives Code: wlan0 IEEE 802.11bg Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated Tx-Power=12 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on 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
Same here I am having exactly the same problem. These used to work before I upgraded to 9.10. Now, the only way I can get wifi to work is if I click on the network manager applet in gnome and like you i wont be able to connect remotely to my office if my PC is somehow rebooted while I am away. In my case, I have already tried manually editing /etc/network/interfaces, so I thought I must have done something wrong. So I install network-admin and configured wireless via that. The configuration that was added via the gui tool was: iface wlan0 inet dhcp wireless-key ********** wireless-essid ******** auto wlan0 When I tried rebooting and logging in via a text console, the interface did not come back up. dmesg showed me this: [ 24.863155] ADDRCONF(NETDEV_UP): wlan0: link is not ready I am pretty convinced there is some script that is failing to configure the interface properly before dhclient runs. Please let me know if you found the solution to this problem. I have been searching the internet for some information for quite some time now and it has been frustrating. Thanks
Problem SOLVED! Please ignore my previous post. I have managed to solve my problem. Apparently Network Manager in karmic only allows your wifi to activate upon logging in to Gnome or KDE (not sure if this is a bug or what). I solved the problem by installing wicd (which replaces network manager) and configuring the wifi to automatically start. When the machine rebooted, the wifi was up even before I logged into Gnome. Hope this helps you as well.
Another solution: Use wpa_supplicant for your WEP connection. If you use WEP like me, here is how to solve the problem without using or installing wicd. Firstly, test that it will work by first stopping the network manager service: Code: /etc/init.d/network-manager stop This is to verify that you are running independently of network-manager. Then edit /etc/network/interfaces like this: Code: iface wlan0 inet dhcp pre-up wpa_supplicant -iwlan0 -c/etc/wpa_supplicant.conf & post-down kill -9 `pidof wpa_supplicant` auto wlan0 Depending on your wifi card, you may need to use the -D option for wpa_supplicant. Then, edit /etc/wpa_supplicant.conf (this will probably be created as a new file) and make it look like this: Code: # Static WEP keys ctrl_interface=/var/run/wpa_supplicant network={ ssid="YOUR_SSID" key_mgmt=NONE wep_key0=YOUR_WEP_KEY wep_tx_keyidx=0 } (The above code was modified from examples in /usr/share/doc/wpa_supplicant/examples) Then restart networking: Code: /etc/init.d/networking restart Verify that your wlan0 interface has an IP and you can ping other hosts on your LAN. If it works you may safely remove network-manager via apt-get like i did.
Dear alidrus, thank you for your suggestion. I did not try it for the moment, but I used the following syntax for /etc/network/interfaces Code: auto lo wlan0 iface lo inet loopback iface wlan0 inet dhcp pre-up iwconfig wlan0 mode managed pre-up iwconfig wlan0 channel 6 pre-up iwconfig wlan0 essid ABCDEF pre-up iwconfig wlan0 key ABCD-EFGH-IJ metric 10 netmask 255.255.255.0 needhostname yes and everything works fine on karmic 32 bits. Then I changed my wireless device to an ANATEL - LITEON WN7600R with RaLink RT2860 chipset (if I understand correctly), and I also switched to jaunty 64bits. Since then, neither version of /etc/network/interfaces works - I have to use the NetworkManager on kde or gnome. Besides, I am not connected to the network automatically on kde, but only on gnome. On kde I have to click on the ESSID in the list of the wireless networks. This suggests that the syntax in /etc/network/interfaces may depend on which particular wireless card is used. If I have the patience to try other solutions, including that of alidrus, I will let you know about the results... PS. How do I mark this issues as "solved" in the forum please ?
