Stracing a setuid program changes its behaviour; in this case, sudo
doesn't run with effective uid 0, so it exits with an error message very
early in execution. You might as well delete the strace log, anyone else
can get an identical one with "strace sudo ls" (for example).

How can someone else reproduce what you've seen here? Please set the
status back to 'New' once you've replied.

Thanks

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

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https://bugs.launchpad.net/bugs/1345600

Title:
  Sudo hangs after resume

Status in “sudo” package in Ubuntu:
  Incomplete

Bug description:
  After resuming from a suspend, sudo hangs: doesn't prompt for
  password, doesn't give an error, does absolutely nothing. The entire
  terminal is blocked and Ctrl C does nothing.

  Attached strace.

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