For me, the problem began without touching the hardware switch, I merely turned off wifi in network manager. To me, this issue seems related to https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/997114 , since "airplane mode" was turned on when I turned wifi off.
Once on, I cannot turn "airplane mode" back off, and consequently I can't turn wifi on. Found a workaround here http://askubuntu.com/questions/119195/cannot-disable-airplane-mode sudo rfkill list all shows that wifi is blocked sudo rfkill unblock all will unblock it. After that, wireless works again. Until you turn it off via network manager, or turn on "airplane mode", then the problem reappears. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/996389 Title: NetworkManager unable to detect wifi when turning on hardware switch Status in “network-manager” package in Ubuntu: Confirmed Bug description: 1) Version Description: Ubuntu 11.10 Release: 11.10 Using a HPmini1000 laptop. 2) network-manager: Installé : 0.9.1.90-0ubuntu5.1 Candidat : 0.9.1.90-0ubuntu5.1 Table de version : *** 0.9.1.90-0ubuntu5.1 0 500 http://fr.archive.ubuntu.com/ubuntu/ oneiric-updates/main i386 Packages 100 /var/lib/dpkg/status 0.9.1.90-0ubuntu3 0 500 http://fr.archive.ubuntu.com/ubuntu/ oneiric/main i386 Packages 3) What happens When turning on hardware switch for wifi, the network manager doesn't recognise the hardware (greyed entries for wifi). 4) What I expected I expected it to recognise the wifi equipment and start scanning for wifi networks. 5) More info Strangely enough, while reporting this bug (on a wired connection), the network manager started detecting wifi again. I rebooted, and the bug came again. I started reporting the bug, and the wired connection started again. 6) a few logs: --------------- When there is a bug-------- /var/log/syslog says: May 7 23:33:38 matga-umpc NetworkManager[611]: <info> WiFi now enabled by radio killswitch May 7 23:33:38 matga-umpc NetworkManager[611]: <info> (eth1): bringing up device. May 7 23:33:38 matga-umpc NetworkManager[611]: <error> [1336426418.772051] [nm-device-wifi.c:3046] real_update_hw_address(): (eth1): unable to read hardware address (error 19) May 7 23:33:38 matga-umpc NetworkManager[611]: <error> [1336426418.791858] [nm-device-wifi.c:486] wireless_get_range(): (eth1): couldn't get driver range information (19). May 7 23:33:38 matga-umpc wpa_supplicant[16499]: nl80211: 'nl80211' generic netlink not found May 7 23:33:38 matga-umpc wpa_supplicant[16499]: Could not read interface eth1 flags: No such device May 7 23:33:38 matga-umpc wpa_supplicant[16499]: Failed to initialize driver interface May 7 23:33:38 matga-umpc NetworkManager[611]: <error> [1336426418.804444] [nm-supplicant-interface.c:570] interface_add_cb(): (eth1): error adding interface: wpa_supplicant couldn't grab this interface. May 7 23:33:38 matga-umpc NetworkManager[611]: dbus_g_proxy_cancel_call: assertion `pending != NULL' failed May 7 23:33:38 matga-umpc NetworkManager[611]: <info> (eth1): supplicant interface state: starting -> down May 7 23:33:38 matga-umpc NetworkManager[611]: <warn> Trying to remove a non-existant call id. May 7 23:33:39 matga-umpc avahi-daemon[614]: Joining mDNS multicast group on interface eth2.IPv6 with address fe80::225:56ff:fe5c:62a3. May 7 23:33:39 matga-umpc avahi-daemon[614]: New relevant interface eth2.IPv6 for mDNS. May 7 23:33:39 matga-umpc avahi-daemon[614]: Registering new address record for fe80::225:56ff:fe5c:62a3 on eth2.*. May 7 23:33:48 matga-umpc kernel: [31877.112227] eth2: no IPv6 routers present --------------- ifconfig result: -------------- When there is no bug ------------ root@matga-umpc:/home/matga# ifconfig eth0 Link encap:Ethernet HWaddr 00:25:b3:5c:d8:a5 inet adr:192.168.2.4 Bcast:192.168.2.255 Masque:255.255.255.0 adr inet6: fe80::225:b3ff:fe5c:d8a5/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:1116 erreurs:0 :0 overruns:0 frame:0 TX packets:1270 errors:0 dropped:0 overruns:0 carrier:3 collisions:0 lg file transmission:1000 Octets reçus:990687 (990.6 KB) Octets transmis:352377 (352.3 KB) Interruption:42 eth2 Link encap:Ethernet HWaddr 00:25:56:5c:62:a3 inet adr:192.168.2.20 Bcast:192.168.2.255 Masque:255.255.255.0 adr inet6: fe80::225:56ff:fe5c:62a3/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Packets reçus:2 erreurs:0 :0 overruns:0 frame:1830 TX packets:161 errors:36 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 Octets reçus:640 (640.0 B) Octets transmis:33809 (33.8 KB) Interruption:16 Adresse de base:0xc000 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:20 erreurs:0 :0 overruns:0 frame:0 TX packets:20 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 Octets reçus:1520 (1.5 KB) Octets transmis:1520 (1.5 KB) -------------- ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: network-manager 0.9.1.90-0ubuntu5.1 ProcVersionSignature: Ubuntu 3.0.0-19.33-generic 3.0.27 Uname: Linux 3.0.0-19-generic i686 NonfreeKernelModules: wl ApportVersion: 1.23-0ubuntu4 Architecture: i386 CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type Date: Tue May 8 09:38:40 2012 ExecutablePath: /usr/sbin/NetworkManager Gconf: IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) IpRoute: Keyfiles: Error: [Errno 2] Aucun fichier ou dossier de ce type NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ProcEnviron: PATH=(custom, no user) SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/996389/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
