kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Darla, thank you for reporting this and helping make Ubuntu better.
Could you please provide the full computer model as noted on the sticker
of the computer itself (not from the Bug Description)?

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

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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
  --- 
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC1D0p:   darla      2479 F...m pulseaudio
   /dev/snd/controlC1:  darla      2479 F.... pulseaudio
   /dev/snd/controlC0:  darla      2479 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 15.04
  HibernationDevice: RESUME=UUID=ac85efbe-0ab6-41b5-9397-9eaebaf2f6f8
  InstallationDate: Installed on 2015-01-25 (130 days ago)
  InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Hewlett-Packard HP ENVY m6 Sleekbook
  NonfreeKernelModules: fglrx
  Package: linux (not installed)
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-18-generic.efi.signed root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-18-generic N/A
   linux-backports-modules-3.19.0-18-generic  N/A
   linux-firmware                             1.143.1
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  vivid
  Uname: Linux 3.19.0-18-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2015-05-03 (32 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/15/2013
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.02
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 1995
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 04.20
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.02:bd05/15/2013:svnHewlett-Packard:pnHPENVYm6Sleekbook:pvr0883100022305B00000320100:rvnHewlett-Packard:rn1995:rvr04.20:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP ENVY m6 Sleekbook
  dmi.product.version: 0883100022305B00000320100
  dmi.sys.vendor: Hewlett-Packard

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