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[iulianpojar <iulianpojar@xxxxxxxxx>]

i am using for a few days now the latest kernel 3.19.0-30-generic , and
the problem does not appear

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https://bugs.launchpad.net/bugs/1495136

Title:
  System hard froze, kernel bug reported in syslog

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  When I rebooted and looked in syslog, I saw this:

  Sep 12 15:05:41 avignon thermald[681]: Dropped below poll threshold
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 0:Processor
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 8:intel_powerclamp
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 11:intel_pstate
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 10:rapl_controller
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 0:Processor
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 8:intel_powerclamp
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 11:intel_pstate
  Sep 12 15:05:41 avignon thermald[681]: thd_trip_cdev_state_reset index 10:rapl_controller
  Sep 12 15:05:41 avignon thermald[681]: Read set point 0
  Sep 12 15:05:57 avignon thermald[681]: Dropped below poll threshold
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 0:Processor
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 8:intel_powerclamp
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 11:intel_pstate
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 10:rapl_controller
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 0:Processor
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 8:intel_powerclamp
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 11:intel_pstate
  Sep 12 15:05:57 avignon thermald[681]: thd_trip_cdev_state_reset index 10:rapl_controller
  Sep 12 15:05:58 avignon thermald[681]: Read set point 0
  Sep 12 15:17:01 avignon CRON[4827]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
  Sep 12 13:56:05 avignon org.freedesktop.Notifications[1391]: ** (notify-osd:1777): WARNING **: stack_close_notification_handler(): notification id == 0, likely wrong
  Sep 12 15:29:25 avignon org.freedesktop.Telepathy.AccountManager[1391]: (process:1830): GLib-GIO-WARNING **: netlink message was truncated; shouldn't happen...

  
  Followed immediately by this

  Sep 12 15:29:29 avignon kernel: [16233.486261] BUG: unable to handle kernel paging request at ffffffffffffffe0
  Sep 12 15:29:29 avignon kernel: [16233.486330] IP: [<ffffffffc076e95d>] i915_gem_object_move_to_inactive+0x7d/0x170 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.486414] PGD 1c16067 PUD 1c18067 PMD 0
  Sep 12 15:29:29 avignon kernel: [16233.486453] Oops: 0000 [#1] SMP
  Sep 12 15:29:29 avignon kernel: [16233.486484] Modules linked in: hid_generic snd_usb_audio usbhid snd_usbmidi_lib hid snd_hda_codec_hdmi arc4 snd_hda_codec_via uvcvideo snd_hda_codec_generic iwldvm snd_hda_intel snd_hda_controller mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_core snd_hda_codec snd_hwdep v4l2_common i915 videodev snd_pcm intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp media coretemp snd_seq_midi snd_seq_midi_event snd_rawmidi iwlwifi kvm_intel kvm snd_seq crct10dif_pclmul crc32_pclmul snd_seq_device ghash_clmulni_intel mei_me snd_timer cfg80211 drm_kms_helper drm aesni_intel snd mei rtsx_pci_ms memstick i2c_algo_bit aes_x86_64 lrw soundcore gf128mul glue_helper ablk_helper shpchp cryptd lpc_ich video joydev serio_raw tpm_infineon mac_hid wmi parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc psmouse ahci r8169 rtsx_pci libahci mii
  Sep 12 15:29:29 avignon kernel: [16233.487171] CPU: 1 PID: 1058 Comm: Xorg Not tainted 3.19.0-29-generic #31-Ubuntu
  Sep 12 15:29:29 avignon kernel: [16233.487223] Hardware name: System76, Inc. Gazelle Professional/Gazelle Professional, BIOS 4.6.5 09/27/2012
  Sep 12 15:29:29 avignon kernel: [16233.487284] task: ffff880214b989d0 ti: ffff88020485c000 task.ti: ffff88020485c000
  Sep 12 15:29:29 avignon kernel: [16233.487331] RIP: 0010:[<ffffffffc076e95d>]  [<ffffffffc076e95d>] i915_gem_object_move_to_inactive+0x7d/0x170 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.487424] RSP: 0018:ffff88020485fb88  EFLAGS: 00010286
  Sep 12 15:29:29 avignon kernel: [16233.487459] RAX: 0000000000000000 RBX: ffff8800d4e31918 RCX: ffff8800d4e37c98
  Sep 12 15:29:29 avignon kernel: [16233.487503] RDX: ffffffffffffff90 RSI: ffff8801f3123700 RDI: ffff8801f3123640
  Sep 12 15:29:29 avignon kernel: [16233.487547] RBP: ffff88020485fb98 R08: ffff8800847f5560 R09: ffff8800d4e37d88
  Sep 12 15:29:29 avignon kernel: [16233.487591] R10: ffff8800d4e37c88 R11: 0000000000000009 R12: ffff8800d4e31a48
  Sep 12 15:29:29 avignon kernel: [16233.487635] R13: ffff88020485fd25 R14: 00000000000de363 R15: ffff88020485fdf0
  Sep 12 15:29:29 avignon kernel: [16233.487681] FS:  00007fe8dc988980(0000) GS:ffff88021f240000(0000) knlGS:0000000000000000
  Sep 12 15:29:29 avignon kernel: [16233.487730] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  Sep 12 15:29:29 avignon kernel: [16233.487767] CR2: ffffffffffffffe0 CR3: 000000021448b000 CR4: 00000000001407e0
  Sep 12 15:29:29 avignon kernel: [16233.487811] Stack:
  Sep 12 15:29:29 avignon kernel: [16233.487826]  ffff88020485fbb8 ffff8800d4e31918 ffff88020485fbe8 ffffffffc0770175
  Sep 12 15:29:29 avignon kernel: [16233.487883]  ffff8800d4e31a58 ffff8801f3074e40 ffff88020485fc48 0000000000000007
  Sep 12 15:29:29 avignon kernel: [16233.487939]  ffff8801f3074e40 ffff88020485fd25 0000000000000000 ffff88020485fdf0
  Sep 12 15:29:29 avignon kernel: [16233.487995] Call Trace:
  Sep 12 15:29:29 avignon kernel: [16233.488038]  [<ffffffffc0770175>] i915_gem_retire_requests_ring+0x55/0x150 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.488104]  [<ffffffffc0766dad>] i915_gem_execbuffer_reserve+0x2d/0x360 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.488168]  [<ffffffffc07680ae>] i915_gem_do_execbuffer.isra.22+0x4ee/0xd00 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.488235]  [<ffffffffc07699e9>] i915_gem_execbuffer2+0xb9/0x2b0 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.488297]  [<ffffffffc058ea6f>] drm_ioctl+0x1df/0x680 [drm]
  Sep 12 15:29:29 avignon kernel: [16233.488343]  [<ffffffff810e030c>] ? __hrtimer_start_range_ns+0x2dc/0x410
  Sep 12 15:29:29 avignon kernel: [16233.488388]  [<ffffffff812096a0>] do_vfs_ioctl+0x2e0/0x4e0
  Sep 12 15:29:29 avignon kernel: [16233.488429]  [<ffffffff816a6875>] ? __sys_recvmsg+0x65/0x80
  Sep 12 15:29:29 avignon kernel: [16233.488467]  [<ffffffff81209921>] SyS_ioctl+0x81/0xa0
  Sep 12 15:29:29 avignon kernel: [16233.488504]  [<ffffffff817cbe4d>] system_call_fastpath+0x16/0x1b
  Sep 12 15:29:29 avignon kernel: [16233.488543] Code: 74 7f 0f 1f 40 00 48 8b 87 c0 00 00 00 48 39 c6 48 8d 50 90 75 15 eb 56 66 0f 1f 44 00 00 48 8b 42 70 48 39 c6 48 8d 50 90 74 43 <48> 3b 48 e0 75 ed 48 85 d2 74 38 4c 8b 42 60 48 8d 42 60 4c 39
  Sep 12 15:29:29 avignon kernel: [16233.488871] RIP  [<ffffffffc076e95d>] i915_gem_object_move_to_inactive+0x7d/0x170 [i915]
  Sep 12 15:29:29 avignon kernel: [16233.488942]  RSP <ffff88020485fb88>
  Sep 12 15:29:29 avignon kernel: [16233.488965] CR2: ffffffffffffffe0
  Sep 12 15:29:29 avignon kernel: [16233.504411] ---[ end trace 04d6b0a7ca9ca253 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-29-generic 3.19.0-29.31
  ProcVersionSignature: Ubuntu 3.19.0-29.31-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-29-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  clh        1525 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Sep 12 15:40:26 2015
  HibernationDevice: RESUME=UUID=565c18a7-550a-460e-b8ae-6e2b5b2553a6
  InstallationDate: Installed on 2015-03-29 (166 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150325)
  MachineType: System76, Inc. Gazelle Professional
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-29-generic root=UUID=ff5bcd5d-b5e2-426d-a259-82e1bb05f47c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-29-generic N/A
   linux-backports-modules-3.19.0-29-generic  N/A
   linux-firmware                             1.143.3
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/27/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 4.6.5
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Gazelle Professional
  dmi.board.vendor: System76, Inc.
  dmi.board.version: gazp8
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: No Enclosure
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd09/27/2012:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp8:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp8:cvnNoEnclosure:ct9:cvrN/A:
  dmi.product.name: Gazelle Professional
  dmi.product.version: gazp8
  dmi.sys.vendor: System76, Inc.

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