[Bug 1206897] Re: logind fails to work, falling back to ConsoleKit when /run/users already exists

[Iain Lane]

That other bug is bug #1197395, FWIW

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https://bugs.launchpad.net/bugs/1206897

Title:
  logind fails to work, falling back to ConsoleKit when /run/users
  already exists

Status in “systemd” package in Ubuntu:
  Incomplete

Bug description:
  When testing Mir I've found a case where logind fails and this causes
  the user to lose access the hardware accelerated rendering. The cause
  is (for some unknown reason) /run/user exists and logind aborts when
  trying to open a session.

  From /var/log/auth.log:

  Jul 31 13:25:07 alchemy lightdm: pam_unix(lightdm:session): session opened for user bob by (uid=0)
  Jul 31 13:25:07 alchemy systemd-logind[725]: Failed to create /run/user: File exists
  Jul 31 13:25:07 alchemy lightdm: pam_systemd(lightdm:session): Failed to create session: File exists

  When this first occurred it would persist between reboots and went
  away eventually (don't know if I did anything to cause that).

  The second time it occurred I did:
  $ sudo stop lightdm
  $ sudo umount /run/user
  $ sudo rmdir /run/user
  $ sudo start lightdm

  and this fixes the problem.

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