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[Chris <910845@xxxxxxxxxxxxxxxxxx>]

There may still be a difference on 32 bit systems: I can NOT change the
priority on a process at all - the normal user does not have access to
do so.

To test this further I changed the view to "all processes" and found
that the error occurs for any process with the priority set to "very
high"

I then ran top as superuser and changed the niceness of pulse-audio to 0
(normal).  The problem did not occur when selecting the pulse-audio
process in 'system monitor'.  I then changed the niceness back to -20 in
top and found I could _still_not_get_the_error_ to occur.

I then rebooted and proved the error could still be created.  
I then logged out and logged back in selecting Unity2d - the niceness is set to 0 (default) and the problem can not be recreated
I then logged out and back in with Unity3d and though the niceness is now -20 the problem can still not be created.

There seems to be a problem with the way the niceness is being set on
boot.

Chris

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-system-monitor in Ubuntu.
https://bugs.launchpad.net/bugs/910845

Title:
  Message "Cannot change the priority of process" is displayed with a
  normal user selects a high priority process

Status in “gnome-system-monitor” package in Ubuntu:
  Triaged

Bug description:
  TEST CASE
  1. Launch gnome-system-monitor as a normal user
  2. Scroll down the list and select the process 'pulseaudio' 
  OR
     Select the first process and scroll down to the bottom of the list

  EXPECTED RESULT
  Nothing special happens

  ACTUAL RESULT
  A popup appears with the following message:
  "Cannot change the priority of process with PID 2640 to -20.
  Permission denied"

  === Original Description ===
  open system monitor switch to tab processe
  select any process
  press down and up key continusaly
  a popup will appear
  this is a 32-bit problem
  see the images:
  http://ubuntuforums.org/attachment.php?attachmentid=210046&d=1325422483
  http://ubuntuforums.org/attachment.php?attachmentid=210106&stc=1&thumb=1&d=1325500407
  http://ubuntuforums.org/attachment.php?attachmentid=210115&d=1325512351
  may 32-bit users are facing problem
  see the threads:
  http://ubuntuforums.org/showthread.php?p=11581200#post11581200
  http://ubuntuforums.org/showthread.php?t=1902931
  this bug is for 32-bit ubuntu users dont know about other vairants many are facing(32-bit users)

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: gnome-system-monitor 3.3.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
  Uname: Linux 3.2.0-7-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 1.90-0ubuntu1
  Architecture: i386
  Date: Mon Jan  2 19:19:20 2012
  ExecutablePath: /usr/bin/gnome-system-monitor
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcEnviron:
   LANGUAGE=en_IN:en
   PATH=(custom, no user)
   LANG=en_IN
   SHELL=/bin/bash
  SourcePackage: gnome-system-monitor
  UpgradeStatus: Upgraded to precise on 2011-12-25 (7 days ago)

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