Sierra Aircard 875 (PCMCIA, vendor 0x1199; ID 0x6820 ) showed same problem on Dell D630 when first inserted. (Device recognized as USB modem but did not appear in Network Manager menu) It was working in 8.10 but not in 9.04. But after unplugging and then reseating and then using the WIFI connection to connect to the Web and searching for other reports like this, it finally did get recognized! (Might have something to do with the modem registration on the 3G network? (I have also have a Novatel MC950D (USB) which *does* work in both 8.10 and 9.04 once you "eject" the NVTL_AICD drive that it gets mounted initially as.) Apr 26 07:45:53 psvan-03 kernel: [ 1195.164172] pcmcia_socket pcmcia_socket0: pccard: CardBus card inserted into slot 0 Apr 26 07:45:53 psvan-03 kernel: [ 1195.164261] pci 0000:04:00.0: reg 10 32bit mmio: [0x000000-0x000fff] Apr 26 07:45:53 psvan-03 kernel: [ 1195.164367] pci 0000:04:00.0: supports D1 D2 Apr 26 07:45:53 psvan-03 kernel: [ 1195.164373] pci 0000:04:00.0: PME# supported from D0 D1 D2 D3hot Apr 26 07:45:53 psvan-03 kernel: [ 1195.164384] pci 0000:04:00.0: PME# disabled Apr 26 07:45:53 psvan-03 kernel: [ 1195.164474] pci 0000:04:00.1: reg 10 32bit mmio: [0x000000-0x000fff] Apr 26 07:45:53 psvan-03 kernel: [ 1195.164578] pci 0000:04:00.1: supports D1 D2 Apr 26 07:45:53 psvan-03 kernel: [ 1195.164583] pci 0000:04:00.1: PME# supported from D0 D1 D2 D3hot Apr 26 07:45:53 psvan-03 kernel: [ 1195.164594] pci 0000:04:00.1: PME# disabled Apr 26 07:45:53 psvan-03 kernel: [ 1195.165364] ohci_hcd 0000:04:00.0: enabling device (0000 -> 0002) Apr 26 07:45:53 psvan-03 kernel: [ 1195.165381] ohci_hcd 0000:04:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 Apr 26 07:45:53 psvan-03 kernel: [ 1195.165842] ohci_hcd 0000:04:00.0: setting latency timer to 64 Apr 26 07:45:53 psvan-03 kernel: [ 1195.165851] ohci_hcd 0000:04:00.0: OHCI Host Controller Apr 26 07:45:53 psvan-03 kernel: [ 1195.166378] ohci_hcd 0000:04:00.0: new USB bus registered, assigned bus number 8 Apr 26 07:45:53 psvan-03 kernel: [ 1195.166413] ohci_hcd 0000:04:00.0: irq 19, io mem 0x8c000000 Apr 26 07:45:54 psvan-03 kernel: [ 1195.250083] usb usb8: configuration #1 chosen from 1 choice Apr 26 07:45:54 psvan-03 kernel: [ 1195.250162] hub 8-0:1.0: USB hub found Apr 26 07:45:54 psvan-03 kernel: [ 1195.250187] hub 8-0:1.0: 1 port detected Apr 26 07:45:54 psvan-03 kernel: [ 1195.250575] ohci_hcd 0000:04:00.1: enabling device (0000 -> 0002) Apr 26 07:45:54 psvan-03 kernel: [ 1195.250592] ohci_hcd 0000:04:00.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19 Apr 26 07:45:54 psvan-03 kernel: [ 1195.250659] ohci_hcd 0000:04:00.1: setting latency timer to 64 Apr 26 07:45:54 psvan-03 kernel: [ 1195.250667] ohci_hcd 0000:04:00.1: OHCI Host Controller Apr 26 07:45:54 psvan-03 kernel: [ 1195.250819] ohci_hcd 0000:04:00.1: new USB bus registered, assigned bus number 9 Apr 26 07:45:54 psvan-03 kernel: [ 1195.250850] ohci_hcd 0000:04:00.1: irq 19, io mem 0x8c001000 Apr 26 07:45:54 psvan-03 kernel: [ 1195.334496] usb usb9: configuration #1 chosen from 1 choice Apr 26 07:45:54 psvan-03 kernel: [ 1195.334806] hub 9-0:1.0: USB hub found Apr 26 07:45:54 psvan-03 kernel: [ 1195.334830] hub 9-0:1.0: 1 port detected Apr 26 07:45:58 psvan-03 kernel: [ 1199.549189] usb 8-1: new full speed USB device using ohci_hcd and address 2 Apr 26 07:45:58 psvan-03 kernel: [ 1199.764070] usb 8-1: configuration #1 chosen from 1 choice Apr 26 07:45:58 psvan-03 kernel: [ 1199.765353] sierra 8-1:1.0: Sierra USB modem converter detected Apr 26 07:45:58 psvan-03 kernel: [ 1199.770682] usb 8-1: Sierra USB modem converter now attached to ttyUSB0 Apr 26 07:45:58 psvan-03 kernel: [ 1199.770788] usb 8-1: Sierra USB modem converter now attached to ttyUSB1 Apr 26 07:45:58 psvan-03 kernel: [ 1199.770884] usb 8-1: Sierra USB modem converter now attached to ttyUSB2 Apr 26 07:45:59 psvan-03 nm-system-settings: SCPlugin-Ifupdown: device added (udi: /org/freedesktop/Hal/devices/usb_device_1199_6820_noserial_if0_serial_usb_0, iface: (null)): iface not found Apr 26 07:45:59 psvan-03 NetworkManager: (ttyUSB0): found serial port (udev:GSM hal:GSM) Apr 26 07:45:59 psvan-03 NetworkManager: (ttyUSB0): new Modem device (driver: 'sierra') Apr 26 07:45:59 psvan-03 NetworkManager: (ttyUSB0): exported as /org/freedesktop/Hal/devices/usb_device_1199_6820_noserial_if0_serial_usb_0 Apr 26 07:46:03 psvan-03 NetworkManager: (ttyUSB0): device state change: 1 -> 2 Apr 26 07:46:03 psvan-03 NetworkManager: (ttyUSB0): deactivating device (reason: 2). Apr 26 07:46:03 psvan-03 NetworkManager: Policy set 'Auto happy' (wlan0) as default for routing and DNS. Apr 26 07:46:03 psvan-03 NetworkManager: nm_system_device_flush_ip4_routes_with_iface: assertion `iface_idx >= 0' failed Apr 26 07:46:03 psvan-03 NetworkManager: nm_system_device_flush_ip4_addresses_with_iface: assertion `iface_idx >= 0' failed Apr 26 07:46:03 psvan-03 NetworkManager: (ttyUSB0): device state change: 2 -> 3 Apr 26 07:59:38 psvan-03 NetworkManager: Activation (ttyUSB0) starting connection 'AT&T' Apr 26 07:59:38 psvan-03 NetworkManager: (ttyUSB0): device state change: 3 -> 4 Apr 26 07:59:38 psvan-03 NetworkManager: Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) scheduled... Apr 26 07:59:38 psvan-03 NetworkManager: Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) started... Apr 26 07:59:38 psvan-03 NetworkManager: [1240757978.857651] nm_serial_device_open(): (ttyUSB0) opening device... Apr 26 07:59:38 psvan-03 NetworkManager: Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) complete. Apr 26 07:59:39 psvan-03 NetworkManager: (ttyUSB0): powering up... Apr 26 07:59:39 psvan-03 NetworkManager: Registered on Roaming network Apr 26 07:59:39 psvan-03 NetworkManager: Associated with network: +COPS: 0,0,"Rogers Wireless",2 Apr 26 07:59:39 psvan-03 NetworkManager: Connected, Woo! Apr 26 07:59:39 psvan-03 NetworkManager: Activation (ttyUSB0) Stage 2 of 5 (Device Configure) scheduled... Apr 26 07:59:39 psvan-03 NetworkManager: Activation (ttyUSB0) Stage 2 of 5 (Device Configure) starting... Apr 26 07:59:39 psvan-03 NetworkManager: (ttyUSB0): device state change: 4 -> 5 Apr 26 07:59:39 psvan-03 NetworkManager: Starting pppd connection Apr 26 07:59:39 psvan-03 NetworkManager: [1240757979.335993] nm_ppp_manager_start(): Command line: /usr/sbin/pppd nodetach lock nodefaultroute user