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[Sebastien Bacher <seb128@xxxxxxxxxx>]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. The issue you are reporting is an upstream one and it
would be nice if somebody having it could send the bug to the developers
of the software by following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please
tell us the number of the upstream bug (or the link), so we can add a
bugwatch that will inform us about its status. Thanks in advance.

** Changed in: gnome-system-monitor (Ubuntu)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1404990

Title:
  system monitor wrong if cpu offline

Status in gnome-system-monitor package in Ubuntu:
  New

Bug description:
  I observe two faults in the Ubuntu 14.04LTS system monitor:

  1. If a CPU is marked offline, the system monitor does not report
  any higher-numbered online CPUs.  E.g.,:

        a. Run system monitor - it reports 8 CPUs.
        b. Mark CPU 3 offline, via:

             echo 0 |  sudo tee /sys/devices/system/cpu/cpu3/online

        c. Restart system monitor: It now reports only 3 CPUS (1,2,3).

     The system monitor display not change immediately, so I suspect the
     immediate failure is caused at system monitor initialization, presumably
     because it assumes that the first offline CPU indicates the end of
     CPUs for this system. Which is not true, of course.

  2. In the system monitor display, CPUs are numbered 1...N, for an N-CPU
      system. This is incorrect, because CPUs are numbered from 0, not 1.
      This can lead to confusion when looking at what particular processors 
      are doing.

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