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[Aapo Rantalainen <1547204@xxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "ProcModules.txt"
   https://bugs.launchpad.net/bugs/1547204/+attachment/4574903/+files/ProcModules.txt

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Title:
  i915 several 'call traces' in dmesg

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 16.04
  Kernel: Ubuntu 4.4.0-4.19-generic 4.4.1

  There are seven WARNINGS in dmesg during boot.
  dmesg | grep "cut here" -A 1
  [    5.916356] ------------[ cut here ]------------
  [    5.916450] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12147 intel_atomic_check+0x307/0x6d0 [i915]()
  --
  [    5.917586] ------------[ cut here ]------------
  [    5.917661] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:11695 intel_plane_atomic_calc_changes+0x549/0x6b0 [i915]()
  --
  [    5.996083] ------------[ cut here ]------------
  [    5.996176] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12724 intel_modeset_check_state+0x556/0x910 [i915]()
  --
  [    6.100769] ------------[ cut here ]------------
  [    6.100853] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12147 intel_atomic_check+0x307/0x6d0 [i915]()
  --
  [    6.336057] ------------[ cut here ]------------
  [    6.336151] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:12724 intel_modeset_check_state+0x556/0x910 [i915]()
  --
  [    6.338439] ------------[ cut here ]------------
  [    6.338516] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/i915/intel_fbdev.c:406 intel_fb_initial_config+0x2e4/0x5f0 [i915]()
  --
  [    6.342397] ------------[ cut here ]------------
  [    6.342413] WARNING: CPU: 0 PID: 47 at /build/linux-IIZPYL/linux-4.4.0/drivers/gpu/drm/drm_atomic_helper.c:682 drm_atomic_helper_update_legacy_modeset_state+0x26a/0x280 [drm_kms_helper]()

  Happens also with mainline kernel 4.4.1-040401-generic.

  Doesn't happen with mainline kernel  4.2.0-040200-generic.
  --- 
  ApportVersion: 2.20-0ubuntu2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  user       1021 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=67704630-8b83-4442-92fe-7cfeb6200110
  InstallationDate: Installed on 2016-02-15 (3 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha i386 (20160214)
  MachineType: FUJITSU SIEMENS LIFEBOOK P1610
  Package: linux (not installed)
  PccardctlIdent:
   Socket 0:
     product info: "OMNIKEY
   ", "CardMan 4040
   ", "", ""
     manfid: 0x0223, 0x0200
  PccardctlStatus:
   Socket 0:
     5.0V
    16-bit
    PC Card
     Subdevice 0 (function 0) bound to driver "cm4040_cs"
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-4-generic root=UUID=1756610f-00c1-4886-b55d-e842ffdf62e4 ro nosplash
  ProcVersionSignature: Ubuntu 4.4.0-4.19-generic 4.4.1
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-4-generic N/A
   linux-backports-modules-4.4.0-4-generic  N/A
   linux-firmware                           1.155
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  xenial
  Uname: Linux 4.4.0-4-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 04/02/2007
  dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
  dmi.bios.version: Version 1.13
  dmi.board.name: FJNB1C5
  dmi.board.vendor: FUJITSU
  dmi.board.version: CP307305-01
  dmi.chassis.type: 10
  dmi.chassis.vendor: FUJITSU SIEMENS
  dmi.chassis.version: P16__
  dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.13:bd04/02/2007:svnFUJITSUSIEMENS:pnLIFEBOOKP1610:pvr:rvnFUJITSU:rnFJNB1C5:rvrCP307305-01:cvnFUJITSUSIEMENS:ct10:cvrP16__:
  dmi.product.name: LIFEBOOK P1610
  dmi.sys.vendor: FUJITSU SIEMENS

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