[Bug 985735] Re: update-manager restarts KDM and interrupts update process

[Steve Langasek]

So bug #744944 dealt with this same issue with pam, where it was
concluded that kdm does not need to be restarted on libpam upgrade
because libpam is not loaded persistently so will always get the new
version of the library no matter what.

I'm not sure the same can be said for libc.  If kdm only does all its
username lookups in a short-lived helper process of the daemon, then
it's probably ok to have eglibc not restart it.  Otherwise, we're just
trading one failure scenario for another here - either kdm gets
ungracefully restarted out from under the desktop mid-upgrade, or kdm is
left running but is no longer able to let users back in if the user logs
out for some reason.

Some guidance from the kubuntu developers is needed here about what we
should do.  Is there a different method we should use to request a
graceful restart of kdm?  Should we just leave kdm running for the
current session, knowing users may be locked out afterwards due to NSS
mismatches?

** Package changed: update-manager (Ubuntu) => eglibc (Ubuntu)

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

** Changed in: eglibc (Ubuntu)
     Assignee: (unassigned) => Kubuntu Developers (kubuntu-dev)

** Changed in: eglibc (Ubuntu)
    Milestone: None => ubuntu-12.04

** Tags added: rls-p-tracking

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https://bugs.launchpad.net/bugs/985735

Title:
  update-manager restarts KDM and interrupts update process

Status in “eglibc” package in Ubuntu:
  Incomplete

Bug description:
  When updating to 12.04 LTS from Oneiric, the update-manager process
  prompts to restart KDM. The problem is that it actually restarts the
  whole X server, interrupting the update process. The only way to work
  around the issue is to finish the installation manually, with aptitude
  for example.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.13
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
  Uname: Linux 3.2.0-23-generic-pae i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu5
  Architecture: i386
  Date: Thu Apr 19 18:20:55 2012
  GsettingsChanges:
   
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  UpgradeStatus: Upgraded to precise on 2012-04-11 (8 days ago)

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