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["H.-Dirk Schmitt" <dirk@xxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1492764 ***
    https://bugs.launchpad.net/bugs/1492764

** This bug has been marked a duplicate of bug 1492764
   [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)

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https://bugs.launchpad.net/bugs/1509788

Title:
  ------------[ cut here ]------------ WARNING: CPU: 3 PID: 783 at
  /build/linux-
  AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326
  check_crtc_state+0x2c5/0x440 [i915]()

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  more than once during boot:

  [   11.973743] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
  [   11.973746] ------------[ cut here ]------------
  [   11.973758] WARNING: CPU: 3 PID: 783 at /build/linux-AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]()
  [   11.973759] pipe state doesn't match!
  [   11.973760] Modules linked in: arc4 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media dell_wmi sparse_keymap btusb btrtl btbcm btintel bluetooth iwlmvm mac80211 dell_laptop dcdbas dell_smm_hwmon intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd input_leds joydev serio_raw iwlwifi cfg80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core 8250_fintek snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd mei_me lpc_ich mei shpchp soundcore mac_hid dell_rbtn dell_smo8800 parport_pc ppdev lp parport autofs4 i915 psmouse ahci
  [   11.973793]  libahci i2c_algo_bit e1000e drm_kms_helper sdhci_pci drm ptp sdhci pps_core wmi video
  [   11.973799] CPU: 3 PID: 783 Comm: Xorg Tainted: G        W       4.2.0-16-generic #19-Ubuntu
  [   11.973800] Hardware name: Dell Inc. Latitude E5540/077XV9, BIOS A12 05/19/2015
  [   11.973802]  0000000000000000 00000000aee23105 ffff8800db8c77c8 ffffffff817e8c09
  [   11.973804]  0000000000000000 ffff8800db8c7820 ffff8800db8c7808 ffffffff8107b3c6
  [   11.973805]  ffff8800db8c7848 ffff8800db8c78b0 ffff8802116f7800 0000000000000001
  [   11.973807] Call Trace:
  [   11.973811]  [<ffffffff817e8c09>] dump_stack+0x45/0x57
  [   11.973815]  [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0
  [   11.973817]  [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70
  [   11.973828]  [<ffffffffc01eebc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915]
  [   11.973837]  [<ffffffffc01eefb5>] check_crtc_state+0x2c5/0x440 [i915]
  [   11.973849]  [<ffffffffc0202d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915]
  [   11.973859]  [<ffffffffc0203f27>] intel_crtc_set_config+0x4c7/0x580 [i915]
  [   11.973869]  [<ffffffffc0054ee5>] ? drm_mode_create+0x25/0x60 [drm]
  [   11.973877]  [<ffffffffc004e4c6>] drm_mode_set_config_internal+0x66/0x100 [drm]
  [   11.973884]  [<ffffffffc0052b29>] drm_mode_setcrtc+0x3e9/0x500 [drm]
  [   11.973889]  [<ffffffffc0043495>] drm_ioctl+0x125/0x610 [drm]
  [   11.973896]  [<ffffffffc0052740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
  [   11.973899]  [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480
  [   11.973902]  [<ffffffff81087f61>] ? __set_task_blocked+0x41/0xa0
  [   11.973904]  [<ffffffff81210b09>] SyS_ioctl+0x79/0x90
  [   11.973907]  [<ffffffff8108ab8e>] ? SyS_rt_sigprocmask+0x8e/0xc0
  [   11.973909]  [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75
  [   11.973911] ---[ end trace 1bf4132a5846f07f ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19 [modified: boot/vmlinuz-4.2.0-16-generic]
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  hmasmoudi   1040 F.... pulseaudio
   /dev/snd/controlC1:  hmasmoudi   1040 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sun Oct 25 12:26:46 2015
  HibernationDevice: RESUME=UUID=99aea242-c239-4886-b584-3bf53b883f00
  InstallationDate: Installed on 2015-10-24 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Dell Inc. Latitude E5540
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=c6047f35-c07b-4022-82ed-964064e65c14 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Aucun fichier ou dossier de ce type: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/19/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A12
  dmi.board.name: 077XV9
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA12:bd05/19/2015:svnDellInc.:pnLatitudeE5540:pvr01:rvnDellInc.:rn077XV9:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E5540
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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