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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/1513648

Title:
  [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled
  (expected 1, found 0)

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  A few seconds after boot I get this message in the log (and wifi does
  not activate).

  Many things still work, but the system acts a bit confused. Sometimes
  it gets almost unsusable until reboot (and then there are more of
  those "cut here" sections in the log).

  Kind regards,
    Patrik


  [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
   ------------[ cut here ]------------
  [    6.549187] WARNING: CPU: 2 PID: 1048 at /build/linux-AxjFAn/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]()
  [    6.549188] pipe state doesn't match!
  [    6.549189] Modules linked in: iptable_filter ip_tables x_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc bnep pn544_mei mei_phy pn544 hci nfc arc4 dell_wmi joydev btusb btrtl btbcm sparse_keymap btintel bluetooth dell_laptop dcdbas dell_smm_hwmon uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_soc_rt5640 iwlmvm snd_soc_rl6231 mac80211 snd_soc_core snd_compress snd_hda_codec_hdmi crct10dif_pclmul ac97_bus crc32_pclmul snd_pcm_dmaengine ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd iwlwifi snd_pcm input_leds serio_raw
  [    6.549234]  cfg80211 lpc_ich snd_seq_midi snd_seq_midi_event shpchp mei_me mei snd_rawmidi snd_seq snd_seq_device snd_timer snd 8250_fintek soundcore dw_dmac dw_dmac_core dell_smo8800 snd_soc_sst_acpi 8250_dw dell_rbtn i2c_designware_platform i2c_designware_core spi_pxa2xx_platform mac_hid cdc_mbim qcserial cdc_wdm cdc_ncm usb_wwan usbnet mii usbserial parport_pc ppdev lp parport autofs4 uas usb_storage i915 i2c_algo_bit psmouse drm_kms_helper e1000e drm ahci libahci ptp sdhci_pci pps_core wmi sdhci_acpi video sdhci i2c_hid hid
  [    6.549269] CPU: 2 PID: 1048 Comm: Xorg Tainted: G        W  OE   4.2.0-16-generic #19-Ubuntu
  [    6.549270] Hardware name: Dell Inc. Latitude E7440/07F3F4, BIOS A09 05/01/2014
  [    6.549272]  0000000000000000 000000002ecf7f35 ffff880409e337c8 ffffffff817e8c09
  [    6.549275]  0000000000000000 ffff880409e33820 ffff880409e33808 ffffffff8107b3c6
  [    6.549278]  ffff880409e33848 ffff880409e338b0 ffff8804072d6800 0000000000000001
  [    6.549280] Call Trace:
  [    6.549286]  [<ffffffff817e8c09>] dump_stack+0x45/0x57
  [    6.549291]  [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0
  [    6.549293]  [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70
  [    6.549308]  [<ffffffffc0225bc1>] ? intel_pipe_config_compare+0xb31/0xc60 [i915]
  [    6.549320]  [<ffffffffc0225fb5>] check_crtc_state+0x2c5/0x440 [i915]
  [    6.549336]  [<ffffffffc0239d6d>] intel_modeset_check_state+0x21d/0x6d0 [i915]
  [    6.549350]  [<ffffffffc023af27>] intel_crtc_set_config+0x4c7/0x580 [i915]
  [    6.549364]  [<ffffffffc00b6ee5>] ? drm_mode_create+0x25/0x60 [drm]
  [    6.549374]  [<ffffffffc00b04c6>] drm_mode_set_config_internal+0x66/0x100 [drm]
  [    6.549384]  [<ffffffffc00b4b29>] drm_mode_setcrtc+0x3e9/0x500 [drm]
  [    6.549392]  [<ffffffffc00a5495>] drm_ioctl+0x125/0x610 [drm]
  [    6.549400]  [<ffffffffc00b4740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
  [    6.549404]  [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480
  [    6.549407]  [<ffffffff81087f61>] ? __set_task_blocked+0x41/0xa0
  [    6.549410]  [<ffffffff81210b09>] SyS_ioctl+0x79/0x90
  [    6.549413]  [<ffffffff8108ab8e>] ? SyS_rt_sigprocmask+0x8e/0xc0
  [    6.549416]  [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75
  [    6.549418] ---[ end trace 5a9f3f63db8e3888 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  patrikj    1724 F.... pulseaudio
   /dev/snd/controlC1:  patrikj    1724 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Nov  5 23:43:28 2015
  HibernationDevice: RESUME=UUID=2c948eae-cab3-47b5-a293-ceefec2af360
  InstallationDate: Installed on 2014-10-14 (387 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Latitude E7440
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=a8c1bdf4-4a10-4923-be0e-03d7148a6b88 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
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/01/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A09
  dmi.board.name: 07F3F4
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA09:bd05/01/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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