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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1320851

Title:
  WARNING: CPU: 0 PID: 74 at drivers/gpu/drm/i915/intel_pm.c:5817
  i915_request_power_well+0x77/0x80 [i915]()

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I cannot boot my haswell machine in 14.04 unless I use 'recovery'
  mode. I get the following backtrace:

  
  [   10.770854] WARNING: CPU: 0 PID: 74 at /build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_pm.c:5817 i915_request_power_well+0x77/0x80 [i915]()
  [   10.772266] Modules linked in: arc4 i915 iwldvm intel_ips mac80211 snd_hda_codec_realtek microread_mei microread mei_phy crc_ccitt x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel hci drm_kms_helper kvm_intel nfc drm kvm snd_hda_codec iwlwifi snd_hwdep snd_pcm snd_page_alloc snd_timer crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel snd psmouse i2c_algo_bit aes_x86_64 lrw mei_me gf128mul glue_helper serio_raw mac_hid soundcore cfg80211 ablk_helper lpc_ich cryptd mei video hid_generic usbhid hid e1000e ahci ptp libahci pata_acpi pps_core
  [   10.776993] CPU: 0 PID: 74 Comm: kworker/0:1 Not tainted 3.13.0-24-generic #46-Ubuntu
  [   10.777799] Hardware name: <snip>
  [   10.779442] Workqueue: events azx_probe_work [snd_hda_intel]
  [   10.780273]  0000000000000009 ffff880242365d50 ffffffff81715a64 0000000000000000
  [   10.781118]  ffff880242365d88 ffffffff810676bd 0000000000000000 0000000000000000
  [   10.781962]  0000000000000000 ffff8802420ac000 ffff880241a1f800 ffff880242365d98
  [   10.782826] Call Trace:
  [   10.783662]  [<ffffffff81715a64>] dump_stack+0x45/0x56
  [   10.784512]  [<ffffffff810676bd>] warn_slowpath_common+0x7d/0xa0
  [   10.784836] cfg80211: World regulatory domain updated:
  [   10.784836] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
  [   10.784838] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [   10.784839] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [   10.784840] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
  [   10.784840] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [   10.784841] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  [   10.791446]  [<ffffffff8106779a>] warn_slowpath_null+0x1a/0x20
  [   10.792296]  [<ffffffffa04f2ea7>] i915_request_power_well+0x77/0x80 [i915]
  [   10.793134]  [<ffffffffa025de42>] hda_display_power+0x32/0x40 [snd_hda_intel]
  [   10.793970]  [<ffffffffa025c7b1>] azx_probe_continue+0x41/0x960 [snd_hda_intel]
  [   10.794795]  [<ffffffffa025dbd5>] azx_probe_work+0x15/0x20 [snd_hda_intel]
  [   10.795628]  [<ffffffff810838a2>] process_one_work+0x182/0x450
  [   10.796467]  [<ffffffff81084641>] worker_thread+0x121/0x410
  [   10.797297]  [<ffffffff81084520>] ? rescuer_thread+0x3e0/0x3e0
  [   10.798117]  [<ffffffff8108b312>] kthread+0xd2/0xf0
  [   10.798920]  [<ffffffff8108b240>] ? kthread_create_on_node+0x1d0/0x1d0
  [   10.799718]  [<ffffffff8172637c>] ret_from_fork+0x7c/0xb0
  [   10.800508]  [<ffffffff8108b240>] ? kthread_create_on_node+0x1d0/0x1d0

  Related issues:
  http://wyldeplayground.net/kernel-problem-in-14-04-on-hold/
  https://bugzilla.redhat.com/show_bug.cgi?id=1044764
  https://bugzilla.kernel.org/show_bug.cgi?id=73971

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-24-generic.
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D8p', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/pcmC1D1p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
  Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
  Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
  Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
  Date: Mon May 19 07:12:25 2014
  HibernationDevice: RESUME=UUID=6618bc54-5603-45c0-afd3-090398b48f59
  InstallationDate: Installed on 2014-05-18 (0 days ago)
  InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  MachineType: Intel Corporation Shark Bay Client platform
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=fdd7c9a2-bd0e-4206-994e-c5b27aed0ee3 ro recovery nomodeset
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             N/A
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/24/2012
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: HSWLPTU1.86C.0084.R01.1207240349
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Basking Ridge
  dmi.board.vendor: Intel Corp.
  dmi.board.version: 2
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnIntelCorporation:bvrHSWLPTU1.86C.0084.R01.1207240349:bd07/24/2012:svnIntelCorporation:pnSharkBayClientplatform:pvr0.1:rvnIntelCorp.:rnBaskingRidge:rvr2:cvnIntelCorporation:ct9:cvr0.1:
  dmi.product.name: Shark Bay Client platform
  dmi.product.version: 0.1
  dmi.sys.vendor: Intel Corporation

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