Public bug reported: I'm using my phone as an USB modem. It used to be working fine in 15.10, but now in 16.04 it disconnects within approximately 2 minutes when it connects.
Here's dmesg log **before** network manager fails: [ 2493.046646] usb 1-1.1: new high-speed USB device number 6 using ehci-pci [ 2493.139903] usb 1-1.1: New USB device found, idVendor=1004, idProduct=6344 [ 2493.139907] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2493.139922] usb 1-1.1: Product: LGE Android Phone [ 2493.139923] usb 1-1.1: Manufacturer: LG Electronics Inc. [ 2493.139925] usb 1-1.1: SerialNumber: XXXXXXXXXXXX [ 2493.230445] cdc_acm 1-1.1:1.2: ttyACM0: USB ACM device [ 2493.230721] usbcore: registered new interface driver cdc_acm [ 2493.230723] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 2493.268457] usbcore: registered new interface driver cdc_ether [ 2493.290079] rndis_host 1-1.1:1.0 usb0: register 'rndis_host' at usb-0000:00:1a.0-1.1, RNDIS device, 02:4d:41:43:34:07 [ 2493.290108] usbcore: registered new interface driver rndis_host [ 2493.321367] rndis_host 1-1.1:1.0 enp0s26u1u1: renamed from usb0 [ 2493.343344] IPv6: ADDRCONF(NETDEV_UP): enp0s26u1u1: link is not ready And dmesg log **after** network manager fails: [ 2493.046646] usb 1-1.1: new high-speed USB device number 6 using ehci-pci [ 2493.139903] usb 1-1.1: New USB device found, idVendor=1004, idProduct=6344 [ 2493.139907] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2493.139922] usb 1-1.1: Product: LGE Android Phone [ 2493.139923] usb 1-1.1: Manufacturer: LG Electronics Inc. [ 2493.139925] usb 1-1.1: SerialNumber: LGD8552e4244b8 [ 2493.230445] cdc_acm 1-1.1:1.2: ttyACM0: USB ACM device [ 2493.230721] usbcore: registered new interface driver cdc_acm [ 2493.230723] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 2493.268457] usbcore: registered new interface driver cdc_ether [ 2493.290079] rndis_host 1-1.1:1.0 usb0: register 'rndis_host' at usb-0000:00:1a.0-1.1, RNDIS device, 02:4d:41:43:34:07 [ 2493.290108] usbcore: registered new interface driver rndis_host [ 2493.321367] rndis_host 1-1.1:1.0 enp0s26u1u1: renamed from usb0 [ 2493.343344] IPv6: ADDRCONF(NETDEV_UP): enp0s26u1u1: link is not ready [ 2527.615086] NetworkManager[1042]: segfault at 4e8 ip 000000000046c810 sp 00007ffdd47e0120 error 4 in NetworkManager[400000+2b9000] [ 2529.423507] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2529.425511] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 2529.728754] NetworkManager[4830]: segfault at 4e8 ip 000000000046c810 sp 00007ffc5a4cfda0 error 4 in NetworkManager[400000+2b9000] [ 2530.383596] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 2530.394093] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2530.634992] NetworkManager[4866]: segfault at 4e8 ip 000000000046c810 sp 00007fff61f7f060 error 4 in NetworkManager[400000+2b9000] [ 2531.137181] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2531.139427] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready More info: Ubuntu 16.04.1 LTS network-manager 1.2.2-0ubuntu0.16.04.3 ** Affects: network-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1637982 Title: segfault shortly after connection to an USB modem is established Status in network-manager package in Ubuntu: New Bug description: I'm using my phone as an USB modem. It used to be working fine in 15.10, but now in 16.04 it disconnects within approximately 2 minutes when it connects. Here's dmesg log **before** network manager fails: [ 2493.046646] usb 1-1.1: new high-speed USB device number 6 using ehci-pci [ 2493.139903] usb 1-1.1: New USB device found, idVendor=1004, idProduct=6344 [ 2493.139907] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2493.139922] usb 1-1.1: Product: LGE Android Phone [ 2493.139923] usb 1-1.1: Manufacturer: LG Electronics Inc. [ 2493.139925] usb 1-1.1: SerialNumber: XXXXXXXXXXXX [ 2493.230445] cdc_acm 1-1.1:1.2: ttyACM0: USB ACM device [ 2493.230721] usbcore: registered new interface driver cdc_acm [ 2493.230723] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 2493.268457] usbcore: registered new interface driver cdc_ether [ 2493.290079] rndis_host 1-1.1:1.0 usb0: register 'rndis_host' at usb-0000:00:1a.0-1.1, RNDIS device, 02:4d:41:43:34:07 [ 2493.290108] usbcore: registered new interface driver rndis_host [ 2493.321367] rndis_host 1-1.1:1.0 enp0s26u1u1: renamed from usb0 [ 2493.343344] IPv6: ADDRCONF(NETDEV_UP): enp0s26u1u1: link is not ready And dmesg log **after** network manager fails: [ 2493.046646] usb 1-1.1: new high-speed USB device number 6 using ehci-pci [ 2493.139903] usb 1-1.1: New USB device found, idVendor=1004, idProduct=6344 [ 2493.139907] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2493.139922] usb 1-1.1: Product: LGE Android Phone [ 2493.139923] usb 1-1.1: Manufacturer: LG Electronics Inc. [ 2493.139925] usb 1-1.1: SerialNumber: LGD8552e4244b8 [ 2493.230445] cdc_acm 1-1.1:1.2: ttyACM0: USB ACM device [ 2493.230721] usbcore: registered new interface driver cdc_acm [ 2493.230723] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 2493.268457] usbcore: registered new interface driver cdc_ether [ 2493.290079] rndis_host 1-1.1:1.0 usb0: register 'rndis_host' at usb-0000:00:1a.0-1.1, RNDIS device, 02:4d:41:43:34:07 [ 2493.290108] usbcore: registered new interface driver rndis_host [ 2493.321367] rndis_host 1-1.1:1.0 enp0s26u1u1: renamed from usb0 [ 2493.343344] IPv6: ADDRCONF(NETDEV_UP): enp0s26u1u1: link is not ready [ 2527.615086] NetworkManager[1042]: segfault at 4e8 ip 000000000046c810 sp 00007ffdd47e0120 error 4 in NetworkManager[400000+2b9000] [ 2529.423507] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2529.425511] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 2529.728754] NetworkManager[4830]: segfault at 4e8 ip 000000000046c810 sp 00007ffc5a4cfda0 error 4 in NetworkManager[400000+2b9000] [ 2530.383596] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 2530.394093] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2530.634992] NetworkManager[4866]: segfault at 4e8 ip 000000000046c810 sp 00007fff61f7f060 error 4 in NetworkManager[400000+2b9000] [ 2531.137181] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 2531.139427] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready More info: Ubuntu 16.04.1 LTS network-manager 1.2.2-0ubuntu0.16.04.3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1637982/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp