Public bug reported:
Using my Merlin XU870 UMTS card makes the system hang, after inserting
the card everything is ok with the following output from dmesg:
[ 905.558000] usb 4-1: new full speed USB device using uhci_hcd and address 2
[ 905.705000] usb 4-1: configuration #1 chosen from 1 choice
[ 906.559000] usbcore: registered new interface driver usbserial
[ 906.560000] drivers/usb/serial/usb-serial.c: USB Serial support registered
for generic
[ 906.599000] usbcore: registered new interface driver usbserial_generic
[ 906.599000] drivers/usb/serial/usb-serial.c: USB Serial Driver core
[ 906.629000] drivers/usb/serial/usb-serial.c: USB Serial support registered
for airprime
[ 906.630000] airprime 4-1:1.0: airprime converter detected
[ 906.630000] usb 4-1: airprime converter now attached to ttyUSB0
[ 906.631000] usb 4-1: airprime converter now attached to ttyUSB1
[ 906.632000] usb 4-1: airprime converter now attached to ttyUSB2
[ 906.632000] airprime 4-1:1.1: airprime converter detected
[ 906.632000] usb 4-1: airprime converter now attached to ttyUSB3
[ 906.632000] usb 4-1: airprime converter now attached to ttyUSB4
[ 906.632000] usb 4-1: airprime converter now attached to ttyUSB5
[ 906.632000] usbcore: registered new interface driver airprime
But if I try to use the created serial device /dev/ttyUSB0 from my
wvdial script the system hangs. I can reproduce this on two laptops
(Thinkpad z60m and Fujitsu Siemens Amilo si1520)
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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System hangs when using Merlin XU870 UMTS card (airprime driver)
https://bugs.launchpad.net/bugs/118505
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