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[gnd <1492764@xxxxxxxxxxxxxxxxxx>]

I am having this issue on Ubuntu 15.10 amd64 kernel 4.2.0-27-generic on Asus UX303UB with Radeon 940M.
Occurred after installing bumblebee optimus and bumblebee-nvidia, together with nvidia-352

[   67.167138] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in base.adjusted_mode.crtc_clock (expected 138780, found 92519)
[   67.167140] ------------[ cut here ]------------
[   67.167208] WARNING: CPU: 2 PID: 144 at /build/linux-NgsOGa/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12328 check_crtc_state+0x2c5/0x440 [i915]()
[   67.167209] pipe state doesn't match!
[   67.167297] Modules linked in: drbg ansi_cprng ctr ccm bnep bbswitch(OE) snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic nls_iso8859_1 snd_hda_intel btusb snd_hda_codec snd_hda_core snd_hwdep btrtl intel_rapl x86_pkg_temp_thermal arc4 btbcm intel_powerclamp coretemp snd_pcm btintel kvm_intel asus_nb_wmi snd_seq_midi asus_wmi snd_seq_midi_event bluetooth sparse_keymap mxm_wmi kvm snd_rawmidi iwlmvm mac80211 crct10dif_pclmul snd_seq crc32_pclmul uvcvideo videobuf2_vmalloc snd_seq_device videobuf2_memops iwlwifi snd_timer videobuf2_core v4l2_common aesni_intel videodev aes_x86_64 lrw gf128mul glue_helper ablk_helper media snd cryptd cfg80211 joydev input_leds serio_raw soundcore shpchp processor_thermal_device mei_me intel_soc_dts_iosf mei int3403_thermal wmi intel_lpss_acpi int3402_thermal
[   67.167329]  intel_lpss tpm_crb int340x_thermal_zone int3400_thermal acpi_als acpi_thermal_rel acpi_pad kfifo_buf industrialio mac_hid parport_pc ppdev lp parport autofs4 i915 psmouse i2c_algo_bit drm_kms_helper ahci libahci drm i2c_hid pinctrl_sunrisepoint video pinctrl_intel hid
[   67.167337] CPU: 2 PID: 144 Comm: kworker/2:2 Tainted: G        W  OE   4.2.0-27-generic #32-Ubuntu
[   67.167340] Hardware name: ASUSTeK COMPUTER INC. UX303UB/UX303UB, BIOS UX303UB.202 08/27/2015
[   67.167352] Workqueue: events console_callback
[   67.167361]  0000000000000000 00000000332cdecc ffff88036f0af658 ffffffff817eae99
[   67.167367]  0000000000000000 ffff88036f0af6b0 ffff88036f0af698 ffffffff8107b9c6
[   67.167372]  ffff88036f0af6d8 ffff88036f0af740 ffff880374c0b800 0000000000000001
[   67.167373] Call Trace:
[   67.167387]  [<ffffffff817eae99>] dump_stack+0x45/0x57
[   67.167399]  [<ffffffff8107b9c6>] warn_slowpath_common+0x86/0xc0
[   67.167407]  [<ffffffff8107ba55>] warn_slowpath_fmt+0x55/0x70
[   67.167468]  [<ffffffffc01d39b8>] ? intel_pipe_config_compare+0xb08/0xc60 [i915]
[   67.167521]  [<ffffffffc01d3dd5>] check_crtc_state+0x2c5/0x440 [i915]
[   67.167589]  [<ffffffffc01e7bfd>] intel_modeset_check_state+0x21d/0x6d0 [i915]
[   67.167647]  [<ffffffffc01e8db7>] intel_crtc_set_config+0x4c7/0x580 [i915]
[   67.167703]  [<ffffffffc007bbf0>] ? drm_modeset_lock_all_crtcs+0x90/0xa0 [drm]
[   67.167745]  [<ffffffffc006c4a6>] drm_mode_set_config_internal+0x66/0x100 [drm]
[   67.167768]  [<ffffffffc00f92a1>] drm_fb_helper_pan_display+0x91/0xe0 [drm_kms_helper]
[   67.167778]  [<ffffffff8144352d>] ? soft_cursor+0x1ad/0x230
[   67.167843]  [<ffffffffc01f618a>] intel_fbdev_pan_display+0x1a/0x60 [i915]
[   67.167849]  [<ffffffff8144848f>] fb_pan_display+0xcf/0x160
[   67.167857]  [<ffffffff814425c0>] bit_update_start+0x20/0x50
[   67.167865]  [<ffffffff8143f683>] fbcon_switch+0x3b3/0x650
[   67.167873]  [<ffffffff814d2f6c>] redraw_screen+0x1ac/0x2a0
[   67.167882]  [<ffffffff814c9363>] complete_change_console+0x43/0xe0
[   67.167889]  [<ffffffff814cab59>] change_console+0x59/0xa0
[   67.167895]  [<ffffffff814d5580>] console_callback+0x110/0x180
[   67.167906]  [<ffffffff810947ba>] process_one_work+0x1aa/0x440
[   67.167914]  [<ffffffff81094a9b>] worker_thread+0x4b/0x4c0
[   67.167922]  [<ffffffff81094a50>] ? process_one_work+0x440/0x440
[   67.167930]  [<ffffffff81094a50>] ? process_one_work+0x440/0x440
[   67.167937]  [<ffffffff8109ae38>] kthread+0xd8/0xf0
[   67.167944]  [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
[   67.167951]  [<ffffffff817f209f>] ret_from_fork+0x3f/0x70
[   67.167957]  [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
[   67.167962] ---[ end trace d33c12e63190e8e9 ]---

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https://bugs.launchpad.net/bugs/1492764

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

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  System: Kubuntu 15.10

  Since kernel version 4.2 I have a few of this errors:

  Sep 06 16:16:35 benediktZ50-70 kernel: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
  Sep 06 16:16:35 benediktZ50-70 kernel: ------------[ cut here ]------------
  Sep 06 16:16:35 benediktZ50-70 kernel: WARNING: CPU: 0 PID: 187 at /build/linux-4dBub_/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x2c5/0x440 [i915]()
  Sep 06 16:16:35 benediktZ50-70 kernel: pipe state doesn't match!
  Sep 06 16:16:35 benediktZ50-70 kernel: Modules linked in: rtsx_usb_sdmmc rtsx_usb i915 i2c_algo_bit drm_kms_helper psmouse ahci drm libahci r8169 mii sdhci_acpi video sdhci i2c_hid hid
  Sep 06 16:16:35 benediktZ50-70 kernel: CPU: 0 PID: 187 Comm: plymouthd Tainted: G        W       4.2.0-7-generic #7-Ubuntu
  Sep 06 16:16:35 benediktZ50-70 kernel: Hardware name: LENOVO 20354/Lancer 5A5, BIOS 9BCN91WW 07/21/2015
  Sep 06 16:16:35 benediktZ50-70 kernel:  ffffffffc023f1e8 ffff8802413277e8 ffffffff817b0465 0000000000000000
  Sep 06 16:16:35 benediktZ50-70 kernel:  ffff880241327838 ffff880241327828 ffffffff81076536 ffff880241327858
  Sep 06 16:16:35 benediktZ50-70 kernel:  ffff8802413278c0 ffff880241152000 0000000000000001 ffff880241152350
  Sep 06 16:16:35 benediktZ50-70 kernel: Call Trace:
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff817b0465>] dump_stack+0x45/0x57
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff81076536>] warn_slowpath_common+0x86/0xc0
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff810765b6>] warn_slowpath_fmt+0x46/0x50
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc01d3091>] ? intel_pipe_config_compare+0xb31/0xc60 [i915]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc01d3485>] check_crtc_state+0x2c5/0x440 [i915]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc01e6f3e>] intel_modeset_check_state+0x20e/0x6b0 [i915]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc01e80e7>] intel_crtc_set_config+0x4c7/0x580 [i915]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc009f915>] ? drm_mode_create+0x25/0x60 [drm]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc0099036>] drm_mode_set_config_internal+0x66/0x100 [drm]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc009d5f8>] drm_mode_setcrtc+0x3a8/0x4c0 [drm]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc008e365>] drm_ioctl+0x125/0x610 [drm]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffffc009d250>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff811fffd5>] do_vfs_ioctl+0x285/0x470
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff811ac159>] ? do_munmap+0x349/0x480
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff81200239>] SyS_ioctl+0x79/0x90
  Sep 06 16:16:35 benediktZ50-70 kernel:  [<ffffffff817b6cf2>] entry_SYSCALL_64_fastpath+0x16/0x75
  Sep 06 16:16:35 benediktZ50-70 kernel: ---[ end trace 724377a3c01e4270 ]---

  
  I will check next week if these errors have any impact on my system.

  This is a Nvidia Optimus System with the Intel graphic card activated
  by default.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-7-generic 4.2.0-7.7
  ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
  Uname: Linux 4.2.0-7-generic x86_64
  ApportVersion: 2.18-0ubuntu9
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  benedikt   1550 F.... pulseaudio
   /dev/snd/controlC1:  benedikt   1550 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sun Sep  6 16:22:48 2015
  HibernationDevice: UUID=3383b02e-b89c-462c-903a-cb936e81b2bf
  InstallationDate: Installed on 2014-12-21 (259 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141218)
  MachineType: LENOVO 20354
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-7-generic root=UUID=b549945a-67ac-4d14-849c-b54e561d47cc ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-7-generic N/A
   linux-backports-modules-4.2.0-7-generic  N/A
   linux-firmware                           1.147
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/21/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 9BCN91WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lancer 5A5
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Z50-70
  dmi.modalias: dmi:bvnLENOVO:bvr9BCN91WW:bd07/21/2015:svnLENOVO:pn20354:pvrLenovoZ50-70:rvnLENOVO:rnLancer5A5:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoZ50-70:
  dmi.product.name: 20354
  dmi.product.version: Lenovo Z50-70
  dmi.sys.vendor: LENOVO

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