我有两台笔记本电脑，运行的是最新更新的 ubuntu 12.04。一台是网关 ID79C，另一台是华硕 SM56CM。要连接到网关，我只需添加
usbserial
option
到 /etc/modules。
我在华硕上做了同样的事情，但它似乎无法在 dmesg 中识别和添加选项行。
相关 dmesg 输出：
网关：
[469749.811939] usb 2-1.2: new high-speed USB device number 52 using ehci_hcd
[469750.267397] scsi52 : usb-storage 2-1.2:1.0
[469751.272023] scsi 52:0:0:0: Direct-Access ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[469751.272742] scsi 52:0:0:1: CD-ROM ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[469751.274511] sd 52:0:0:0: Attached scsi generic sg3 type 0
[469751.280206] sr1: scsi-1 drive
[469751.280509] sr 52:0:0:1: Attached scsi CD-ROM sr1
[469751.280714] sr 52:0:0:1: Attached scsi generic sg5 type 5
[469751.281166] sd 52:0:0:0: [sdc] Attached SCSI removable disk
[469751.403557] usb 2-1.2: USB disconnect, device number 52
[469751.733967] usb 2-1.2: new high-speed USB device number 53 using ehci_hcd
[469752.189850] option 2-1.2:1.0: GSM modem (1-port) converter detected
[469752.190072] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[469752.190267] option 2-1.2:1.1: GSM modem (1-port) converter detected
[469752.190482] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[469752.190831] option 2-1.2:1.2: GSM modem (1-port) converter detected
[469752.190984] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB2
[469752.191243] option 2-1.2:1.3: GSM modem (1-port) converter detected
[469752.191449] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB3
[469752.191875] scsi53 : usb-storage 2-1.2:1.4
[469752.192126] option 2-1.2:1.5: GSM modem (1-port) converter detected
[469752.192331] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB4
[469752.192520] option 2-1.2:1.6: GSM modem (1-port) converter detected
[469752.192656] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB5
[469753.189991] scsi 53:0:0:0: Direct-Access ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[469753.191413] sd 53:0:0:0: Attached scsi generic sg3 type 0
[469753.194091] sd 53:0:0:0: [sdc] Attached SCSI removable disk
华硕：
[55094.440196] usb 3-2: new high-speed USB device number 4 using xhci_hcd
[55094.459739] usb 3-2: ep 0x1 - rounding interval to 32768 microframes, ep desc says 0 microframes
[55094.459752] usb 3-2: ep 0x81 - rounding interval to 32768 microframes, ep desc says 0 microframes
[55094.856171] scsi8 : usb-storage 3-2:1.0
[55095.855573] scsi 8:0:0:0: Direct-Access ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[55095.856306] scsi 8:0:0:1: CD-ROM ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[55095.858282] sd 8:0:0:0: Attached scsi generic sg3 type 0
[55095.860853] sr1: scsi-1 drive
[55095.861136] sr 8:0:0:1: Attached scsi CD-ROM sr1
[55095.861322] sr 8:0:0:1: Attached scsi generic sg4 type 5
[55095.864531] sd 8:0:0:0: [sdc] Attached SCSI removable disk
我能看到的唯一区别是华硕在网关上使用的是 xhci_hcd（usb 3.0）与 ehci_hcd（usb 2.0）。
我也尝试过使用 usb_modeswitch 手动切换，但它说找不到以前的驱动程序。
任何帮助将不胜感激。
答案1
我通过进入 bios 并禁用 xhci 让它在 ASUS 上运行。所以 xhci 功能与 usb_modeswitch/option 结合肯定有问题。所以在这个问题解决之前，我不会喜欢 usb 3.0 :(
华硕 dmesg 输出：
[ 199.903558] usb 2-1.2: new high-speed USB device number 3 using ehci_hcd
[ 200.362841] Initializing USB Mass Storage driver...
[ 200.363104] scsi6 : usb-storage 2-1.2:1.0
[ 200.363319] usbcore: registered new interface driver usb-storage
[ 200.363326] USB Mass Storage support registered.
[ 200.368504] usbcore: registered new interface driver uas
[ 201.362896] scsi 6:0:0:0: Direct-Access ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[ 201.363623] scsi 6:0:0:1: CD-ROM ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[ 201.365534] sd 6:0:0:0: Attached scsi generic sg3 type 0
[ 201.367932] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[ 201.372133] sr1: scsi-1 drive
[ 201.373843] sr 6:0:0:1: Attached scsi CD-ROM sr1
[ 201.374064] sr 6:0:0:1: Attached scsi generic sg4 type 5
[ 201.544644] usb 2-1.2: USB disconnect, device number 3
[ 201.808647] usb 2-1.2: new high-speed USB device number 4 using ehci_hcd
[ 202.264289] option 2-1.2:1.0: GSM modem (1-port) converter detected
[ 202.264630] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 202.264915] option 2-1.2:1.1: GSM modem (1-port) converter detected
[ 202.265222] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[ 202.265512] option 2-1.2:1.2: GSM modem (1-port) converter detected
[ 202.265834] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB2
[ 202.266098] option 2-1.2:1.3: GSM modem (1-port) converter detected
[ 202.266355] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB3
[ 202.266582] option 2-1.2:1.4: GSM modem (1-port) converter detected
[ 202.266817] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB4
[ 202.267021] option 2-1.2:1.5: GSM modem (1-port) converter detected
[ 202.267252] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB5
[ 202.267460] option 2-1.2:1.6: GSM modem (1-port) converter detected
[ 202.267629] usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB6
[ 272.095114] usb 2-1.2: USB disconnect, device number 4
[ 272.095476] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 272.095523] option 2-1.2:1.0: device disconnected
[ 272.096378] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 272.096486] option 2-1.2:1.1: device disconnected
[ 272.097240] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 272.097377] option 2-1.2:1.2: device disconnected
[ 272.098003] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 272.098083] option 2-1.2:1.3: device disconnected
[ 272.098637] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
[ 272.098716] option 2-1.2:1.4: device disconnected
[ 272.098957] option: option_instat_callback: error -108
[ 272.099359] option1 ttyUSB5: GSM modem (1-port) converter now disconnected from ttyUSB5
[ 272.099406] option 2-1.2:1.5: device disconnected
[ 272.099629] option: option_instat_callback: error -108
[ 272.099895] option1 ttyUSB6: GSM modem (1-port) converter now disconnected from ttyUSB6
[ 272.099908] option 2-1.2:1.6: device disconnected