[Bug 1288411] Re: udev restart on upgrade broke my wireless state

[Martin Pitt]

Did you happen to check in "rfkill list" whether anything set it to
soft-block? I wouldn't know what udev had to do with soft rfkill
settings, as it is not touching anything in /sys/class/rfkill nor is
there any rule which would fiddle with /dev/rfkill, nor should
restarting the daemon have any effect on either.

You shoudl be able to stop and restart udev without any ill effect
(except of course losing rules evaluation while it is down) at any time.
Just to double-check, can you do "sudo stop udev" / "sudo start udev"
and see whether it has any effect on NM or rfkill?

I assume this was a trusty→trusty daily upgrade, not one from saucy, so
hopefully the list of upgraded packages should be not too big. Could you
filter out the list of packages that were upgraded in that run from
/var/log/dpkg.log?

Thanks!

** Changed in: systemd (Ubuntu)
       Status: New => Incomplete

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Title:
  udev restart on upgrade broke my wireless state

Status in “systemd” package in Ubuntu:
  Incomplete

Bug description:
  Upgrading on trusty today, my wireless connection suddenly cut out,
  with network-manager reporting that "wireless is disabled".  Looking
  at the logs, I see that udev was upgraded, and that as part of that
  upgrade udev was restarted.  I had to toggle the wireless switch on my
  laptop off and on again to get the wireless to come back.

  I don't know why udev is being restarted on upgrade in Ubuntu - this
  is a delta from the Debian package, where udev is never restarted.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: udev 204-5ubuntu13
  ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
  Uname: Linux 3.13.0-12-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CurrentDesktop: Unity
  CustomUdevRuleFiles: 70-ssd-scheduler.rules 70-kvm-perms.rules
  Date: Wed Mar  5 12:43:35 2014
  InstallationDate: Installed on 2010-09-24 (1258 days ago)
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
  MachineType: LENOVO 2306CTO
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-12-generic root=UUID=362a1cf5-63b7-4122-8457-33ca1d10a8ad ro quiet splash
  SourcePackage: systemd
  UpgradeStatus: Upgraded to trusty on 2013-10-23 (133 days ago)
  dmi.bios.date: 10/25/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ET97WW (2.57 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2306CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2306CTO
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO

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