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[Bug 1406982] Re: WARNING: CPU: 1 PID: 1253 at /build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_display.c:9237 intel_modeset_check_state+0x62d/0x780 [i915]


Gurvinder Dadyala, the next step is to fully reverse commit bisect from
kernel 3.13 to 3.18.1 in order to identify the last bad commit, followed
immediately by the first good one. Once this commit has been identified,
then it may be reviewed as a candidate for backporting into your
release. Could you please do this following

Please note, finding adjacent kernel versions is not fully commit

Thank you for your understanding.

Helpful bug reporting tips:

** Tags removed: kernel-fixed-upstream-3.18.1-031801-generic
** Tags added: kernel-fixed-upstream-3.18.1

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  WARNING: CPU: 1 PID: 1253 at
  intel_modeset_check_state+0x62d/0x780 [i915]

Status in linux package in Ubuntu:

Bug description:
  Hi there, I am also facing the same issue. I have Dell Inspiron 1525 running 14.04.1 LTS and kernel version 3.13.0-43-generic.
  System becomes unusable completly and screen goes off as well. Following is what i have found in dmesg

  [  144.446687] WARNING: CPU: 1 PID: 1253 at /build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_display.c:9237 intel_modeset_check_state+0x62d/0x780 [i915]()
  [  144.446690] encoder's hw state doesn't match sw tracking (expected 0, found 1)
  [  144.446691] Modules linked in: cdc_ether usbnet mii usb_storage ctr ccm bnep rfcomm bluetooth snd_hda_codec_idt snd_hda_codec_hdmi uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev gpio_ich dell_wmi sparse_keymap dell_laptop dcdbas snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq_midi snd_seq_midi_event dm_multipath scsi_dh snd_rawmidi coretemp snd_seq joydev serio_raw arc4 r852 sm_common nand nand_ecc nand_bch bch r592 nand_ids mtd memstick iwl3945 snd_seq_device iwlegacy mac80211 snd_timer snd cfg80211 lpc_ich i915 drm_kms_helper soundcore drm i2c_algo_bit mac_hid wmi video parport_pc ppdev lp parport hid_generic usbhid hid firewire_ohci psmouse sdhci_pci sdhci ahci firewire_core libahci crc_itu_t sky2
  [  144.446750] CPU: 1 PID: 1253 Comm: Xorg Tainted: G        W     3.13.0-43-generic #72-Ubuntu
  [  144.446753] Hardware name: Dell Inc. Inspiron 1525                   /0WP007, BIOS A17 10/27/2009
  [  144.446755]  0000000000000009 ffff8800aaaf99f8 ffffffff81720bf6 ffff8800aaaf9a40
  [  144.446759]  ffff8800aaaf9a30 ffffffff810677cd ffff8800aaaf9ab0 0000000000000001
  [  144.446763]  ffff880036621800 ffff880036621af8 ffff8800b6cc4800 ffff8800aaaf9a90
  [  144.446767] Call Trace:
  [  144.446770]  [<ffffffff81720bf6>] dump_stack+0x45/0x56
  [  144.446774]  [<ffffffff810677cd>] warn_slowpath_common+0x7d/0xa0
  [  144.446778]  [<ffffffff8106783c>] warn_slowpath_fmt+0x4c/0x50
  [  144.446802]  [<ffffffffa01ad285>] ? intel_sdvo_get_hw_state+0x55/0xc0 [i915]
  [  144.446823]  [<ffffffffa019751d>] intel_modeset_check_state+0x62d/0x780 [i915]
  [  144.446846]  [<ffffffffa0197705>] intel_set_mode+0x25/0x30 [i915]
  [  144.446867]  [<ffffffffa01977d6>] intel_release_load_detect_pipe+0xc6/0xf0 [i915]
  [  144.446892]  [<ffffffffa01bf8e9>] intel_tv_detect+0x359/0x500 [i915]
  [  144.446901]  [<ffffffffa00dc25b>] drm_helper_probe_single_connector_modes+0x1eb/0x380 [drm_kms_helper]
  [  144.446918]  [<ffffffffa011e617>] drm_mode_getconnector+0x417/0x480 [drm]
  [  144.446923]  [<ffffffff8108eb62>] ? __hrtimer_start_range_ns+0x1a2/0x3a0
  [  144.446936]  [<ffffffffa010fc22>] drm_ioctl+0x502/0x630 [drm]
  [  144.446942]  [<ffffffff81077f42>] ? __set_task_blocked+0x32/0x70
  [  144.446948]  [<ffffffff811d0e90>] do_vfs_ioctl+0x2e0/0x4c0
  [  144.446952]  [<ffffffff811d10f1>] SyS_ioctl+0x81/0xa0
  [  144.446956]  [<ffffffff817316ad>] system_call_fastpath+0x1a/0x1f
  [  144.446958] ---[ end trace ccc7cdf9d70214e2 ]---
  [  402.128351] perf samples too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-43-generic 3.13.0-43.72
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic
  Uname: Linux 3.13.0-43-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
   /dev/snd/controlC0:  gurvinder   2023 F.... pulseaudio
                        gurvinder   3161 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Jan  2 01:27:54 2015
  HibernationDevice: RESUME=UUID=398088de-7b7e-4d91-adb0-4d5b4cb8d963
  InstallationDate: Installed on 2014-11-22 (40 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Inspiron 1525
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic root=UUID=6dc40c4b-5124-4216-a79f-44b870f54651 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.13.0-43-generic N/A
   linux-backports-modules-3.13.0-43-generic  N/A
   linux-firmware                             1.127.10
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/27/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A17
  dmi.board.name: 0WP007
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA17:bd10/27/2009:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0WP007:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Inspiron 1525
  dmi.sys.vendor: Dell Inc.

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