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[Bug 1440032] Re: nm-applet is missing the Sierra EM7345 4G LTE

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Alex <mail@xxxxxx>
Date: Sun, 17 May 2015 23:26:01 -0000
Reply-to: Bug 1440032 <1440032@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I also have a TP T450s with a Sierra EM 7345. It appears that this piece
of hardware is generally a bit unstable:

http://askubuntu.com/questions/580167/wwan-modem-disabeling-by-itself-ubuntu-14-10-lenovo-t440s-sierra-wireless-em7
https://forums.lenovo.com/t5/ThinkPad-Tablets/Thinkpad-10-EM7345-stops-working/m-p/1742115/highlight/true#M28656

I also experienced the card being or not being available after reboots.

I was successful bringing up the card by unloading and loading the cdc_*
kernel modules (if necessary, several times):

    modprobe -r cdc_mbim cdc_ncm cdc_wdm
    modprobe cdc_mbim cdc_ncm cdc_wdm

Very unsatisfying, but at least a way to get it working when needed.

I would still be interesting to see a Ubuntu dev's opinion on this
issue, especially as the T450s is a Ubuntu-certified machine.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager-applet in Ubuntu.
https://bugs.launchpad.net/bugs/1440032

Title:
  nm-applet is missing the Sierra EM7345 4G LTE

Status in network-manager-applet package in Ubuntu:
  Confirmed

Bug description:
  The current system Ubuntu 15.04 Beta2 (up2date) is missing the nm-
  applet after restarting the system.

  It might be a problem with the Sierra EM7345 module?!
  After the new install of Ubuntu 15.04 Beta2 i saw the Sierra for one or two times inside the nm-applet and i could create a mobile-data connection over HSDPA/UMTS/LTE. But just for this time.

  Now, after some regular updates, the Sierra Card is not accessable
  inside the nm-applet menu for creating a new mobile data connection,
  the old connection profil is missing too. The Sierra EM7345 was also
  named as cdc-wdm not by name.

  [ 2.277029] usb 1-4: New USB device found, idVendor=1199, idProduct=a001
  [ 2.277031] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
  [ 2.277033] usb 1-4: Product: Sierra Wireless EM7345 4G LTE
  [ 2.277034] usb 1-4: Manufacturer: Sierra Wireless Inc.
  [ 2.277035] usb 1-4: SerialNumber: 013937003691337

  # lsusb
  Bus 003 Device 002: ID 8087:8001 Intel Corp.
  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 006: ID 04f2:b449 Chicony Electronics Co., Ltd
  Bus 001 Device 005: ID 8087:0a2a Intel Corp.
  Bus 001 Device 004: ID 138a:0017 Validity Sensors, Inc.
  Bus 001 Device 003: ID 058f:9540 Alcor Micro Corp.
  Bus 001 Device 002: ID 1199:a001 Sierra Wireless, Inc.
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: network-manager-gnome 0.9.10.1-0ubuntu2
  ProcVersionSignature: Ubuntu 3.19.0-11.11-generic 3.19.3
  Uname: Linux 3.19.0-11-generic x86_64
  ApportVersion: 2.17-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Apr  3 13:24:21 2015
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/nm-applet
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-04-02 (0 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  IpRoute:
   default via 192.168.0.1 dev wlan0  proto static  metric 1024 
   192.168.0.0/24 dev wlan0  proto kernel  scope link  src 192.168.0.193
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   LANGUAGE=de_DE
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager-applet
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-dev:
   DEVICE  TYPE      STATE        DBUS-PATH                                  CONNECTION             CON-UUID                              CON-PATH                                           
   wlan0   wifi      connected    /org/freedesktop/NetworkManager/Devices/2  5ghz.offlinehoster.de  e1d2c80e-d6c2-4029-80bd-ed4e93fac4d5  /org/freedesktop/NetworkManager/ActiveConnection/1 
   eth0    ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/1  --                     --                                    --                                                 
   lo      loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/0  --                     --                                    --
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.
  --- 
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  DistroRelease: Ubuntu 15.04
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-04-03 (18 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  IpRoute:
   default via 10.100.1.1 dev eth0  proto static  metric 1024 
   10.100.1.0/24 dev eth0  proto kernel  scope link  src 10.100.1.99 
   169.254.0.0/16 dev eth0  scope link  metric 1000
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=false
   WWANEnabled=false
   WimaxEnabled=true
  Package: network-manager-applet (not installed)
  ProcEnviron:
   LANGUAGE=de_DE
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Tags:  vivid
  Uname: Linux 3.19.0-15-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  nmcli-dev:
   DEVICE    TYPE      STATE        DBUS-PATH                                  CONNECTION              CON-UUID                              CON-PATH                                           
   eth0      ethernet  connected    /org/freedesktop/NetworkManager/Devices/1  Automatisches Ethernet  97829441-a5a9-4a17-a8b0-817db2292448  /org/freedesktop/NetworkManager/ActiveConnection/5 
   cdc-wdm0  gsm       unavailable  /org/freedesktop/NetworkManager/Devices/6  --                      --                                    --                                                 
   wlan0     wifi      unavailable  /org/freedesktop/NetworkManager/Devices/2  --                      --                                    --                                                 
   lo        loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/0  --                      --                                    --
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

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References

[Bug 1440032] [NEW] nm-applet is missing the Sierra EM7345 4G LTE
From: darkhawk, 2015-04-03