Once the connection has started with usb-uhci, it is still impossible to unplug the modem without rebooting the kernel.
Even if the connection was properly closed with pppd, unpluging the modem start a big flow of error messages like Nov 7 08:43:20 passerelle pppd[3021]: Exit. => modem unplugged Nov 7 08:43:43 passerelle kernel: usb-uhci.c: interrupt, status 3, frame# 1990 Nov 7 08:43:43 passerelle kernel: [eagle-usb] eu_irq : URB canceled by user. Nov 7 08:43:43 passerelle kernel: [EAGLE-USB] eu_irq : Callback on unregistered interrupt handler! Nov 7 08:43:43 passerelle last message repeated 3 times Nov 7 08:43:43 passerelle kernel: usb.c: USB disconnect on device 00:14.2-1 address 4 Nov 7 08:43:43 passerelle kernel: [EAGLE-USB] eu_irq : Callback on unregistered interrupt handler! Nov 7 08:43:43 passerelle last message repeated 12 times Nov 7 08:43:43 passerelle kernel: [eagle-usb] ADSL device removed Nov 7 08:43:43 passerelle kernel: [EAGLE-USB] eu_irq : Callback on unregistered interrupt handler! Nov 7 08:43:48 passerelle last message repeated 1219 times Nov 7 08:43:48 passerelle kernel: usb-uhci.c: interrupt, status 3, frame# 856 Nov 7 08:43:48 passerelle kernel: [EAGLE-USB] eu_irq : Callback on unregistered interrupt handler! Nov 7 08:43:53 passerelle last message repeated 1199 times Nov 7 08:43:53 passerelle kernel: hub.c: new USB device 00:14.2-1, assigned address 5 Nov 7 08:43:53 passerelle kernel: [EAGLE-USB] eu_irq : Callback on unregistered interrupt handler! Nov 7 08:43:53 passerelle last message repeated 7 times
