Проверялось на USB->Network переходнике. Изменения происходили только после перезапуска демона.
NM из свежего Сизифа?
Да, конечно.
Что в /var/log/messages при этом?
При подключении USB->Eth адаптера с подключеным кабелем в /var/log/messages имеем: Jun 7 20:44:30 roman kernel: [ 3010.128087] usb 5-1: new high speed USB device using ehci_hcd and address 3 Jun 7 20:44:30 roman kernel: [ 3010.274293] usb 5-1: New USB device found, idVendor=2001, idProduct=3c05 Jun 7 20:44:30 roman kernel: [ 3010.274303] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jun 7 20:44:30 roman kernel: [ 3010.274312] usb 5-1: Product: DUB-E100 Jun 7 20:44:30 roman kernel: [ 3010.274318] usb 5-1: Manufacturer: D-Link Corporation Jun 7 20:44:30 roman kernel: [ 3010.274324] usb 5-1: SerialNumber: 000001 Jun 7 20:44:31 roman kernel: [ 3010.582605] ASIX USB Ethernet Adapter:v4.1.0 10:44:16 Jun 6 2011 Jun 7 20:44:31 roman kernel: [ 3010.582610] <6> http://www.asix.com.tw Jun 7 20:44:31 roman kernel: [ 3010.582621] eth%%d: status ep1in, 8 bytes period 11 Jun 7 20:44:31 roman kernel: [ 3010.583400] eth1: register 'asix' at usb-0000:00:12.2-1, D-Link DUB-E100 USB 2.0 Fast Ethernet Adapter, 00:80 :c8:3b:cc:cb Jun 7 20:44:31 roman kernel: [ 3010.583473] usbcore: registered new interface driver asix Jun 7 20:44:31 roman NetworkManager[4574]: etcnet-alt: read connection: Failed to open file '/etc/net/ifaces/eth1/ipv4address': No such fi le or directory Jun 7 20:44:31 roman NetworkManager[4574]: <error> [1307468671.60826] [nm-device-ethernet.c:750] real_update_permanent_hw_address(): (eth1): unable to read permanent MAC address (error 0) Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): carrier is OFF Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): new Ethernet device (driver: 'asix' ifindex: 4) Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): exported as /org/freedesktop/NetworkManager/Devices/2 Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): now managed Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): bringing up device. Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): preparing device. Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): deactivating device (reason: 2). Jun 7 20:44:31 roman kernel: [ 3010.639973] eth1: rxqlen 0 --> 10 Jun 7 20:44:31 roman kernel: [ 3010.640099] eth1: rxqlen 10 --> 20 Jun 7 20:44:31 roman kernel: [ 3010.640167] eth1: rxqlen 20 --> 30 Jun 7 20:44:31 roman kernel: [ 3010.640235] eth1: rxqlen 30 --> 40 Jun 7 20:44:31 roman kernel: [ 3010.640255] eth1: rxqlen 40 --> 44 Jun 7 20:44:31 roman kernel: [ 3010.661375] eth1: ax88772 - Link status is: 0 Jun 7 20:44:31 roman NetworkManager[4574]: marshal_object: assertion `g_variant_is_object_path (path)' failed Jun 7 20:44:31 roman NetworkManager[4574]: failed to marshal parameter 1 for signal DeviceAdded Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): carrier now ON (device state 20) Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): device state change: unavailable -> disconnected (reason 'carrier-changed') [20 30 40] Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): carrier now OFF (device state 30) Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): device state change: disconnected -> unavailable (reason 'carrier-changed') [30 20 40] Jun 7 20:44:31 roman NetworkManager[4574]: <info> (eth1): deactivating device (reason: 40). Jun 7 20:44:31 roman NetworkManager[4574]: <info> Policy set 'System eth0' (eth0) as default for IPv4 routing and DNS. Jun 7 20:44:31 roman NetworkManager[4574]: <info> Policy set 'System eth0' (eth0) as default for IPv4 routing and DNS. Jun 7 20:44:32 roman NetworkManager[4574]: <info> (eth1): carrier now ON (device state 20) Jun 7 20:44:32 roman NetworkManager[4574]: <info> (eth1): device state change: unavailable -> disconnected (reason 'carrier-changed') [20 30 40]
Тоже касается и USB->Eth адаптера в N800: Bus 005 Device 003: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget
Проверьте с libdbus-glib-0.94-alt2.
(В ответ на комментарий №6) > Проверьте с libdbus-glib-0.94-alt2. Теперь обнаруживает.