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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1462108

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1462108

Title:
  kworker high cpu utilization

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I upgraded to vivid 15.04 on my HP Sleekbook (AMD A10 CPU) and it runs
  very hot. Top shows kworker taking up 60-70% CPU immediately after
  rebooting and not launching any programs.

    top - 17:27:55 up 10 min,  3 users,  load average: 2.93, 2.75, 1.51
  Tasks: 205 total,   3 running, 202 sleeping,   0 stopped,   0 zombie
  %Cpu(s): 22.8 us, 35.5 sy,  0.0 ni, 39.5 id,  0.2 wa,  0.0 hi,  1.9 si,  0.0 st
  KiB Mem:   5233588 total,  4715036 used,   518552 free,    56484 buffers
  KiB Swap:  5468156 total,        0 used,  5468156 free.   689644 cached Mem

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND     
     97 root      20   0       0      0      0 R  66.0  0.0   6:13.97 kworker/2:3 
   3512 darla     20   0 1020444 320036  61580 S  45.8  6.1   2:02.92 chrome      
     22 root      20   0       0      0      0 S  34.2  0.0   3:08.83 ksoftirqd/2 
   3493 darla     20   0 2868728 1.492g  39876 S  30.5 29.9   2:04.76 chrome      
   1033 root      20   0  351108 136976  90380 R  24.9  2.6   1:46.40 Xorg        
   3311 darla     20   0 1085248 205976  90288 S  17.6  3.9   1:26.52 chrome      
   2479 darla      9 -11  630432  10824   7760 S   6.3  0.2   0:13.21 pulseaudio  
   3342 darla     20   0 1109672 332000 135212 S   5.6  6.3   0:29.85 chrome      
   3467 darla     20   0  959564 184012  60188 S   3.0  3.5   0:21.64 chrome      
     77 root      20   0       0      0      0 S   1.7  0.0   0:08.37 kworker/1:1 
   2697 darla     20   0  388040  24652  18852 S   1.7  0.5   0:00.85 xfce4-term+ 
   3483 darla     20   0 1039356 209628  64692 S   1.7  4.0   0:23.44 chrome      
   3561 darla     20   0  879172 146972  64124 S   1.0  2.8   0:07.04 chrome      
     50 root      20   0       0      0      0 S   0.7  0.0   0:05.24 kworker/0:1

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