кусок лога при подключение модема
Jan 1 02:01:46 Gargoyle kern.info kernel: [ 161.300000] usb 1-1: new high-speed USB device number 2 using ehci-platform
Jan 1 02:01:47 Gargoyle kern.info kernel: [ 161.460000] scsi0 : usb-storage 1-1:1.0
Jan 1 02:01:47 Gargoyle user.notice usb-modeswitch: 1-1:1.0: Manufacturer=USBModem Product=HSPA_Data_Card Serial=1234567890ABCDEF
Jan 1 02:01:47 Gargoyle user.notice usb-modeswitch: 1-1:1.0: Selecting /etc/usb_modeswitch.d/1bbb:f000 for mode switching
Jan 1 02:01:47 Gargoyle syslog.notice usb_modeswitch: switch device 1bbb:f000 on 001/002
Jan 1 02:01:47 Gargoyle kern.info kernel: [ 162.080000] usb 1-1: USB disconnect, device number 2
Jan 1 02:01:48 Gargoyle kern.info kernel: [ 162.490000] usb 1-1: new high-speed USB device number 3 using ehci-platform
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.0: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.1: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.2: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.3: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.4: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
Jan 1 02:01:49 Gargoyle user.notice usb-modeswitch: 1-1:1.5: Manufacturer=USBModem Product=HSPA_Data_Card Serial=?
upd. Может нужно в модеме отключить режим сдрома? ат командами...