I have a similar issue - although I am using an embedded Sierra MC8780 card.
Happy to test or provide additional details. Modem Manager is segfault every time I try to connect ... (Latest syslog details) Nov 11 02:04:26 eduLaptop kernel: [18433.791300] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0 Nov 11 02:04:26 eduLaptop kernel: [18433.791408] sierra ttyUSB1: Sierra USB modem converter now disconnected from ttyUSB1 Nov 11 02:04:26 eduLaptop kernel: [18433.791535] sierra ttyUSB2: Sierra USB modem converter now disconnected from ttyUSB2 Nov 11 02:04:26 eduLaptop kernel: [18433.791558] sierra 4-1:1.0: device disconnected Nov 11 02:04:26 eduLaptop kernel: [18433.874875] __ratelimit: 20 callbacks suppressed Nov 11 02:04:26 eduLaptop kernel: [18433.874884] modem-manager[1216]: segfault at 847c750 ip 00007fa1160d134c sp 00007fffecec5bc8 error 6 in libdbus-1.so.3.4.0[7fa1160ab000+3d000] Nov 11 02:04:30 eduLaptop kernel: [18438.522578] usb 4-1: new full speed USB device using uhci_hcd and address 3 Nov 11 02:04:30 eduLaptop kernel: [18438.687810] usb 4-1: configuration #1 chosen from 1 choice Nov 11 02:04:30 eduLaptop kernel: [18438.693708] sierra 4-1:1.0: Sierra USB modem converter detected Nov 11 02:04:30 eduLaptop kernel: [18438.694754] usb 4-1: Sierra USB modem converter now attached to ttyUSB0 Nov 11 02:04:30 eduLaptop kernel: [18438.694848] usb 4-1: Sierra USB modem converter now attached to ttyUSB1 Nov 11 02:04:30 eduLaptop kernel: [18438.694940] usb 4-1: Sierra USB modem converter now attached to ttyUSB2 Nov 11 02:04:47 eduLaptop kernel: [18455.542695] usb 4-1: USB disconnect, address 3 Nov 11 02:04:47 eduLaptop kernel: [18455.544246] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0 Nov 11 02:04:47 eduLaptop kernel: [18455.544404] sierra ttyUSB1: Sierra USB modem converter now disconnected from ttyUSB1 Nov 11 02:04:47 eduLaptop kernel: [18455.544579] sierra ttyUSB2: Sierra USB modem converter now disconnected from ttyUSB2 Nov 11 02:04:47 eduLaptop kernel: [18455.544607] sierra 4-1:1.0: device disconnected Nov 11 02:04:47 eduLaptop kernel: [18455.554061] modem-manager[5777] general protection ip:7fc35ad7e25c sp:7fff7d86d918 error:0 in libdbus-1.so.3.4.0[7fc35ad58000+3d000] Nov 11 02:04:52 eduLaptop kernel: [18460.272576] usb 4-1: new full speed USB device using uhci_hcd and address 4 Nov 11 02:04:52 eduLaptop kernel: [18460.452323] usb 4-1: configuration #1 chosen from 1 choice Nov 11 02:04:52 eduLaptop kernel: [18460.458700] sierra 4-1:1.0: Sierra USB modem converter detected Nov 11 02:04:52 eduLaptop kernel: [18460.459814] usb 4-1: Sierra USB modem converter now attached to ttyUSB0 Nov 11 02:04:52 eduLaptop kernel: [18460.459881] usb 4-1: Sierra USB modem converter now attached to ttyUSB1 Nov 11 02:04:52 eduLaptop kernel: [18460.459949] usb 4-1: Sierra USB modem converter now attached to ttyUSB2 Nov 11 02:06:04 eduLaptop kernel: [18531.791737] usb 4-1: USB disconnect, address 4 Nov 11 02:06:04 eduLaptop kernel: [18531.793266] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0 Nov 11 02:06:04 eduLaptop kernel: [18531.793427] sierra ttyUSB1: Sierra USB modem converter now disconnected from ttyUSB1 Nov 11 02:06:04 eduLaptop kernel: [18531.793610] sierra ttyUSB2: Sierra USB modem converter now disconnected from ttyUSB2 Nov 11 02:06:04 eduLaptop kernel: [18531.793639] sierra 4-1:1.0: device disconnected Nov 11 02:06:04 eduLaptop kernel: [18531.801707] modem-manager[5808]: segfault at 9 ip 00007f8c2737434c sp 00007fff99f6ec28 error 6 in libdbus-1.so.3.4.0[7f8c2734e000+3d000] Nov 11 02:06:08 eduLaptop kernel: [18536.520090] usb 4-1: new full speed USB device using uhci_hcd and address 5 Nov 11 02:06:09 eduLaptop kernel: [18536.712362] usb 4-1: configuration #1 chosen from 1 choice Nov 11 02:06:09 eduLaptop kernel: [18536.718471] sierra 4-1:1.0: Sierra USB modem converter detected Nov 11 02:06:09 eduLaptop kernel: [18536.719228] usb 4-1: Sierra USB modem converter now attached to ttyUSB0 Nov 11 02:06:09 eduLaptop kernel: [18536.719293] usb 4-1: Sierra USB modem converter now attached to ttyUSB1 Nov 11 02:06:09 eduLaptop kernel: [18536.719366] usb 4-1: Sierra USB modem converter now attached to ttyUSB2 -- ModemManager segfaults with Sierra AirCard 880 https://bugs.launchpad.net/bugs/476621 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
