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[Russell Faull <rfaull@xxxxxxxxxxx>]

I've worked around the dropout-then-mandatory-reboot problem in Oneiric
by using wvdial (NM still handles connection to router and on forwarding
to other devices). With wvdial, dropouts are reconnected and internet
access continues.

It's hard to measure but dropout frequency also seem less (this
obviously depends on many hard-to-control variables: weather, cell
range/load/usage, inside/outside etc).

Strange that I seem to have this problem and it is not being reported by
other mobile broadband users. (ISP is Virgin Mobile Broadband leasing
capacity on the Singtel-owned Optus network in Australia.)

Any hints in my logs as to the cause?

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/905622

Title:
  Mobile broadband fails after dropout

Status in “network-manager” package in Ubuntu:
  Incomplete

Bug description:
  My Huawei E1762 modem is the only method I use to connect to the
  internet. If a dropout occurs (sometime frequently in my location),
  the modem is no longer recognised by network-manager and I can't
  reconnect.

  I have tried sudo restart network-manager and sudo restart
  modemmanager, this works sometimes after several minutes, but is so
  inconsistent, it's  quicker to simply reboot to get a connect to the
  web. I have also tried physically pulling the usb modem and
  reinserting with a combination of the above commands -- nothing seems
  to work consistently in 11.10.

  In 11.04, I could run sudo killall modem-manager from a remote desktop
  and get my network going again.

  I'm not sure what logs would help debug this. Advice would be appreciated, please.
  --- 
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  CRDA: Error: [Errno 2] No such file or directory
  CheckboxSubmission: 05d371aaade9ce7acda2b317f5e2e31c
  CheckboxSystem: d00f84de8a555815fa1c4660280da308
  DistroRelease: Ubuntu 11.10
  EcryptfsInUse: Yes
  IpRoute:
   default via 10.64.64.64 dev ppp0  proto static 
   10.64.64.64 dev ppp0  proto kernel  scope link  src 119.12.138.64 
   169.254.0.0/16 dev ppp0  scope link  metric 1000
  Keyfiles: Error: [Errno 2] No such file or directory
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  Package: network-manager 0.9.1.90-0ubuntu5.1
  PackageArchitecture: i386
  ProcVersionSignature: Ubuntu 3.0.0-15.24-generic 3.0.13
  Tags:  oneiric running-unity
  Uname: Linux 3.0.0-15-generic i686
  UpgradeStatus: Upgraded to oneiric on 2011-10-06 (88 days ago)
  UserGroups: adm admin audio cdrom dialout dip fax fuse lpadmin netdev plugdev sambashare tape video
  mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2011-04-02T11:18:08

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