Mam następujący problem. Mam kartę PCI WiFi Edimax. Wszystko było OK. Karta łączyła się z router. Wszystko działało bez problemu. Następnie chciałem połączyć GNS3 z mają siecią LAN według tego tutoriala http://www.blindhog.net/linux-bridging- ... nications/ . Instalowałem (i później odinstalowałem) uml-utilities. Niestety po ponownych uruchomieniu komputera karta WiFi nie daje oznak życia. Próbowałem (także zgodnie z tutorialem) odwrócić proces jednak nic to nie dało. Polecenie ifconfig nie pokazuje karty wlan0 (dopiero ifconfig -a). Podniesienie interfejsu też nic nie daje. Gdy kliknę ikonę sieci mam tam "wyszarzały" tekst "Ralink Corp RT256/RT61 802.11g urządzenie nie obsługiwane".
Wpisy z syslog:
Tak jakby karta nie działała (nawet nie pokazuje sieci sąsiadów). Próbowałem ręcznie ustawić połączenie w Network Managerze ale nic to nie dało. Reinstalacja systemu to 2-3 dni wyjęte z życia. PomóżcieNov 15 09:06:02 arek-pc postfix/master[1322]: reload -- version 2.8.2, configuration /etc/postfix
Nov 15 09:06:02 arek-pc avahi-daemon[827]: Interface wlan0.IPv4 no longer relevant for mDNS.
Nov 15 09:06:02 arek-pc avahi-daemon[827]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.2.52.
Nov 15 09:06:02 arek-pc avahi-daemon[827]: Withdrawing address record for 192.168.2.52 on wlan0.
Nov 15 09:06:02 arek-pc avahi-daemon[827]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.2.52.
Nov 15 09:06:02 arek-pc avahi-daemon[827]: New relevant interface wlan0.IPv4 for mDNS.
Nov 15 09:06:02 arek-pc avahi-daemon[827]: Registering new address record for 192.168.2.52 on wlan0.IPv4.
Nov 15 09:06:02 arek-pc kernel: [ 1652.561743] ADDRCONF(NETDEV_UP): wlan0: link is not ready
Nov 15 09:06:02 arek-pc ntpdate[2381]: Can't find host ntp.ubuntu.com: Name or service not known (-2)
Nov 15 09:06:02 arek-pc ntpdate[2381]: no servers can be used, exiting
Nov 15 09:06:02 arek-pc postfix/master[1322]: reload -- version 2.8.2, configuration /etc/postfix
Nov 15 09:08:22 arek-pc postfix/master[1322]: reload -- version 2.8.2, configuration /etc/postfix
Nov 15 09:08:22 arek-pc avahi-daemon[827]: Interface wlan0.IPv4 no longer relevant for mDNS.
Nov 15 09:08:22 arek-pc avahi-daemon[827]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.2.52.
Nov 15 09:08:22 arek-pc avahi-daemon[827]: Withdrawing address record for 192.168.2.52 on wlan0.
Nov 15 09:08:22 arek-pc avahi-daemon[827]: Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.2.52.
Nov 15 09:08:22 arek-pc avahi-daemon[827]: New relevant interface wlan0.IPv4 for mDNS.
Nov 15 09:08:22 arek-pc avahi-daemon[827]: Registering new address record for 192.168.2.52 on wlan0.IPv4.
Nov 15 09:08:23 arek-pc kernel: [ 1793.197667] ADDRCONF(NETDEV_UP): wlan0: link is not ready
Nov 15 09:08:23 arek-pc ntpdate[2509]: Can't find host ntp.ubuntu.com: Name or service not known (-2)
Nov 15 09:08:23 arek-pc ntpdate[2509]: no servers can be used, exiting
Nov 15 09:08:23 arek-pc postfix/master[1322]: reload -- version 2.8.2, configuration /etc/postfix
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> disable requested (sleeping: no enabled: yes)
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> sleeping or disabling...
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> (eth0): now unmanaged
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> (eth0): device state change: 2 -> 1 (reason 37)
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> (eth0): cleaning up...
Nov 15 09:15:30 arek-pc NetworkManager[882]: <info> (eth0): taking down device.
Nov 15 09:15:48 arek-pc NetworkManager[882]: keyfile: removed /etc/NetworkManager/system-connections/Auto eth0.
Nov 15 09:16:24 arek-pc NetworkManager[882]: keyfile: updating /etc/NetworkManager/system-connections/armagedon
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> enable requested (sleeping: no enabled: no)
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> waking up and re-enabling...
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> WWAN now enabled by management service
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> (eth0): now managed
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> (eth0): device state change: 1 -> 2 (reason 2)
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> (eth0): bringing up device.
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> (eth0): preparing device.
Nov 15 09:16:30 arek-pc NetworkManager[882]: <info> (eth0): deactivating device (reason: 2).
...
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> monitoring kernel firmware directory '/lib/firmware'.
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: init!
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: update_system_hostname
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPluginIfupdown: guessed connection type (wlan0) = 802-3-ethernet
Nov 15 10:05:01 arek-pc kernel: [ 6.941818] ppdev: user-space parallel port driver
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: update_connection_setting_from_if_block: name:wlan0, type:802-3-ethernet, id:Ifupdown (wlan0), uuid: 5391eba4-6426-faca-338e-5828034ff9d1
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: addresses count: 1
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: No dns-nameserver configured in /etc/network/interfaces
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: adding wlan0 to iface_connections
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: adding iface wlan0 to well_known_interfaces
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: autoconnect
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPluginIfupdown: management mode: unmanaged
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/eth0, iface: eth0)
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/net/eth0, iface: eth0): no ifupdown configuration found.
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo)
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found.
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: end _init.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> Loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc. To report bugs please use the NetworkManager mailing list.
Nov 15 10:05:01 arek-pc NetworkManager[743]: Ifupdown: get unmanaged devices count: 0
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: (159712800) ... get_connections.
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: (159712800) ... get_connections (managed=false): return empty list.
Nov 15 10:05:01 arek-pc NetworkManager[743]: keyfile: parsing armagedon ...
Nov 15 10:05:01 arek-pc NetworkManager[743]: keyfile: read connection 'armagedon'
Nov 15 10:05:01 arek-pc NetworkManager[743]: Ifupdown: get unmanaged devices count: 0
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> found WiFi radio killswitch rfkill0 (at /sys/devices/pci0000:00/0000:00:1e.0/0000:03:00.0/ieee80211/phy0/rfkill0) (driver <unknown>)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> WiFi enabled by radio killswitch; enabled by state file
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> WWAN enabled by radio killswitch; enabled by state file
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> WiMAX enabled by radio killswitch; enabled by state file
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> Networking is enabled by state file
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): carrier is OFF
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): new Ethernet device (driver: 'r8169' ifindex: 2)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): exported as /org/freedesktop/NetworkManager/Devices/0
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): now managed
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): device state change: 1 -> 2 (reason 2)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): bringing up device.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): preparing device.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (eth0): deactivating device (reason: 2).
Nov 15 10:05:01 arek-pc kernel: [ 7.024898] i915 0000:00:02.0: irq 43 for MSI/MSI-X
Nov 15 10:05:01 arek-pc kernel: [ 7.024904] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
Nov 15 10:05:01 arek-pc kernel: [ 7.024905] [drm] Driver supports precise vblank timestamp query.
Nov 15 10:05:01 arek-pc kernel: [ 7.025853] r8169 0000:02:00.0: eth0: link down
Nov 15 10:05:01 arek-pc kernel: [ 7.027547] ADDRCONF(NETDEV_UP): eth0: link is not ready
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> modem-manager is now available
Nov 15 10:05:01 arek-pc NetworkManager[743]: <warn> bluez error getting default adapter: The name org.bluez was not provided by any .service files
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> Trying to start the supplicant...
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): driver supports SSID scans (scan_capa 0x01).
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): new 802.11 WiFi device (driver: 'rt61pci' ifindex: 3)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/1
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): now managed
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): device state change: 1 -> 2 (reason 2)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): bringing up device.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): preparing device.
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): deactivating device (reason: 2).
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:00.0/net/wlan0, iface: wlan0)
Nov 15 10:05:01 arek-pc NetworkManager[743]: SCPluginIfupdown: locking wired connection setting
Nov 15 10:05:01 arek-pc NetworkManager[743]: Ifupdown: get unmanaged devices count: 1
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): now unmanaged
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): device state change: 2 -> 1 (reason 3)
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): cleaning up...
Nov 15 10:05:01 arek-pc NetworkManager[743]: <info> (wlan0): taking down device.
Sława Ukrajini!
Niestety do nie końca wiem jak udało mi się to przywrócić do życia 
Podejrzewam, że: w akcie ostatecznym zrobiłem backup danych i przygotowałem się do reinstalacji systemu. Przyszło mi jednak na myśl 
aby spróbować usunąć to urządzenie wlan0 (jak system nie wystartuje to trudno ) i też tak uczyniłem. Oczywiście system nie dał go usunąć, jednak coś musiało zostać usunięte (jakiś plik konfiguracyjny czy coś) bo po restarcie systemu karta zaczęła działać jak wcześniej.