I can confirm that E620 now works correctly, i.e I can go online and browse etc, using Vodafone Mobile Connect in Kubuntu Karmic on AMD64 with the 2.6.31-15-generic kernel. Plugged in and out, and went on and off line several times, it worked at every attempt. And, it reverted correctly to ethernet or wifi afterwards. But I am using wicd, not network-manager! There may be a slight anomaly, as it seems to occupy ttyUSB0, 1 and 2. Should it do that? Acer Aspire 7520 (AMD Athlon X2, Nvidia Gforce 7000M, with 2xSATA drives and non-standard Broadcom wireless card. uname -a (machine ID redacted): Linux ********** 2.6.31-15-generic #49-Ubuntu SMP Fri Nov 6 09:55:13 UTC 2009 x86_64 GNU/Linux lspci: 00:00.0 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2) 00:01.0 ISA bridge: nVidia Corporation MCP67 ISA Bridge (rev a2) 00:01.1 SMBus: nVidia Corporation MCP67 SMBus (rev a2) 00:01.2 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2) 00:01.3 Co-processor: nVidia Corporation MCP67 Co-processor (rev a2) 00:02.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2) 00:02.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2) 00:04.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller (rev a2) 00:04.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller (rev a2) 00:06.0 IDE interface: nVidia Corporation MCP67 IDE Controller (rev a1) 00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1) 00:08.0 PCI bridge: nVidia Corporation MCP67 PCI Bridge (rev a2) 00:09.0 IDE interface: nVidia Corporation MCP67 AHCI Controller (rev a2) 00:0a.0 Ethernet controller: nVidia Corporation MCP67 Ethernet (rev a2) 00:0c.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2) 00:0d.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2) 00:12.0 VGA compatible controller: nVidia Corporation C67 [GeForce 7000M / nForce 610M] (rev a2) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:04.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05) 01:04.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) 01:04.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12) 01:04.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12) 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) lsusb: Bus 004 Device 005: ID 12d1:1001 Huawei Technologies Co., Ltd. E620 USB Modem dmesg (tail): 653.410135] usb 4-1: new full speed USB device using ohci_hcd and address 6 [ 653.644632] usb 4-1: configuration #1 chosen from 1 choice [ 653.649214] scsi10 : SCSI emulation for USB Mass Storage devices [ 653.649858] usb-storage: device found at 6 [ 653.649864] usb-storage: waiting for device to settle before scanning [ 653.710103] usbcore: deregistering interface driver option [ 653.710217] USB Serial deregistering driver GSM modem (1-port) [ 653.770084] usbcore: deregistering interface driver usbserial_generic [ 653.770219] USB Serial deregistering driver generic [ 653.770273] usbcore: deregistering interface driver usbserial [ 653.792697] usb 4-1: USB disconnect, address 6 [ 654.035345] usbcore: registered new interface driver usbserial [ 654.035390] USB Serial support registered for generic [ 654.292728] usbcore: registered new interface driver usbserial_generic [ 654.292738] usbserial: USB Serial Driver core [ 654.297935] USB Serial support registered for GSM modem (1-port) [ 654.298027] usbcore: registered new interface driver option [ 654.298033] option: v0.7.2:USB Driver for GSM modems [ 654.632587] usb 4-1: new full speed USB device using ohci_hcd and address 7 [ 654.860327] usb 4-1: configuration #1 chosen from 1 choice [ 654.880915] option 4-1:1.0: GSM modem (1-port) converter detected [ 654.881215] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 654.903204] option 4-1:1.1: GSM modem (1-port) converter detected [ 654.903476] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB1 [ 654.905460] option 4-1:1.2: GSM modem (1-port) converter detected [ 654.905685] usb 4-1: GSM modem (1-port) converter now attached to ttyUSB2 [ 654.919277] scsi14 : SCSI emulation for USB Mass Storage devices [ 654.919687] usb-storage: device found at 7 [ 654.919693] usb-storage: waiting for device to settle before scanning [ 659.912214] usb-storage: device scan complete [ 659.919162] scsi 14:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 [ 659.926111] scsi 14:0:0:1: Direct-Access HUAWEI SD Storage 2.31 PQ: 0 ANSI: 2 [ 660.012215] sr1: scsi-1 drive [ 660.012591] sr 14:0:0:0: Attached scsi CD-ROM sr1 [ 660.012806] sr 14:0:0:0: Attached scsi generic sg3 type 5 [ 660.013122] sd 14:0:0:1: Attached scsi generic sg4 type 0 [ 660.099334] sd 14:0:0:1: [sdc] Attached SCSI removable disk