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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1431655

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1431655

Title:
  Stack traces on bott

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Macbook Air 	
          Manufacturer: Apple Inc.
  	Product Name: Mac-66F35F19FE2A0D05
  	Version: MacBookAir5,1

  Kernel Version: Last Vivid Beta - Xubuntu
         Linux accensi-MacBookAir 3.19.0-9-generic #9-Ubuntu SMP Wed Mar 11 17:50:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
  Same errors on last 3 kernel versions

  Thunderbolt

  Could not check yet if video display port is working

  [Qui Mar 12 14:45:21 2015] ------------[ cut here ]------------
  [Qui Mar 12 14:45:21 2015] WARNING: CPU: 0 PID: 162 at /build/buildd/linux-3.19.
  0/drivers/thunderbolt/switch.c:95 tb_wait_for_port+0x376/0x410 [thunderbolt]()
  [Qui Mar 12 14:45:21 2015] thunderbolt 0000:05:00.0: 0:0: does not have PHY
  [Qui Mar 12 14:45:21 2015] Modules linked in: btusb bluetooth arc4 brcmsmac cord
  ic joydev brcmutil bcm5974 b43 uvcvideo videobuf2_vmalloc videobuf2_memops video
  buf2_core v4l2_common snd_hda_codec_hdmi videodev mac80211 snd_hda_codec_cirrus 
  snd_hda_codec_generic media cfg80211 ssb intel_rapl snd_hda_intel snd_hda_contro
  ller iosf_mbi snd_hda_codec x86_pkg_temp_thermal intel_powerclamp snd_hwdep core
  temp snd_pcm kvm_intel kvm crct10dif_pclmul crc32_pclmul snd_seq_midi ghash_clmu
  lni_intel snd_seq_midi_event applesmc input_polldev snd_rawmidi aesni_intel aes_
  x86_64 lrw gf128mul snd_seq glue_helper ablk_helper cryptd snd_seq_device snd_ti
  mer i915 snd thunderbolt lpc_ich bcma drm_kms_helper soundcore drm sbs mei_me me
  i sbshc mac_hid i2c_algo_bit shpchp video apple_bl parport_pc ppdev lp parport a
  utofs4 hid_generic hid_apple
  [Qui Mar 12 14:45:21 2015]  usbhid hid ahci libahci
  [Qui Mar 12 14:45:21 2015] CPU: 0 PID: 162 Comm: kworker/u16:4 Not tainted 3.19.
  0-9-generic #9-Ubuntu
  [Qui Mar 12 14:45:21 2015] Hardware name: Apple Inc. MacBookAir5,1/Mac-66F35F19F
  E2A0D05, BIOS MBA51.88Z.00EF.B02.1211271028 11/27/2012
  [Qui Mar 12 14:45:21 2015] Workqueue: thunderbolt tb_handle_hotplug [thunderbolt
  ]
  [Qui Mar 12 14:45:21 2015]  ffffffffc0432ff8 ffff8802621fbc88 ffffffff817c09b5 0
  000000000000007
  [Qui Mar 12 14:45:21 2015]  ffff8802621fbcd8 ffff8802621fbcc8 ffffffff8107595a f
  fff88008a485780
  [Qui Mar 12 14:45:21 2015]  0000000000000000 ffff88026572d630 0000000000000000 f
  fff880089ac5e00
  [Qui Mar 12 14:45:21 2015] Call Trace:
  [Qui Mar 12 14:45:21 2015]  [<ffffffff817c09b5>] dump_stack+0x45/0x57
  [Qui Mar 12 14:45:21 2015]  [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
  [Qui Mar 12 14:45:21 2015]  [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50
  [Qui Mar 12 14:45:21 2015]  [<ffffffffc042e386>] tb_wait_for_port+0x376/0x410 [t
  hunderbolt]
  [Qui Mar 12 14:45:21 2015]  [<ffffffff810ad111>] ? put_prev_entity+0x31/0x430
  [Qui Mar 12 14:45:21 2015]  [<ffffffff815013c3>] ? _dev_info+0x53/0x60
  [Qui Mar 12 14:45:21 2015]  [<ffffffff810135e0>] ? __switch_to+0x150/0x5f0
  [Qui Mar 12 14:45:21 2015]  [<ffffffffc042d667>] tb_scan_port+0x67/0x1c0 [thunde
  rbolt]
  [Qui Mar 12 14:45:21 2015]  [<ffffffffc042d9e1>] tb_handle_hotplug+0x1d1/0x360 [thunderbolt]
  [Qui Mar 12 14:45:21 2015]  [<ffffffff8108eb48>] process_one_work+0x158/0x430
  [Qui Mar 12 14:45:21 2015]  [<ffffffff8108f5db>] worker_thread+0x5b/0x530
  [Qui Mar 12 14:45:21 2015]  [<ffffffff8108f580>] ? rescuer_thread+0x3a0/0x3a0
  [Qui Mar 12 14:45:21 2015]  [<ffffffff81094679>] kthread+0xc9/0xe0
  [Qui Mar 12 14:45:21 2015]  [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
  [Qui Mar 12 14:45:21 2015]  [<ffffffff817c7a3c>] ret_from_fork+0x7c/0xb0
  [Qui Mar 12 14:45:21 2015]  [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0
  [Qui Mar 12 14:45:21 2015] ---[ end trace ae4c204be5c5e718 ]---
  [Qui Mar 12 14:46:51 2015] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

  
  DRM Crash

  [Qui Mar 12 14:45:23 2015] ------------[ cut here ]------------
  [Qui Mar 12 14:45:23 2015] WARNING: CPU: 0 PID: 536 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_audio.c:291 ilk_audio_codec_disable+0x170/0x1b0 [i915]()
  [Qui Mar 12 14:45:23 2015] WARN_ON(!port)
  [Qui Mar 12 14:45:23 2015] Modules linked in:
  [Qui Mar 12 14:45:23 2015]  nls_iso8859_1 btusb bluetooth arc4 brcmsmac cordic joydev brcmutil bcm5974 b43 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common snd_hda_codec_hdmi videodev mac80211 snd_hda_codec_cirrus snd_hda_codec_generic media cfg80211 ssb intel_rapl snd_hda_intel snd_hda_controller iosf_mbi snd_hda_codec x86_pkg_temp_thermal intel_powerclamp snd_hwdep coretemp snd_pcm kvm_intel kvm crct10dif_pclmul crc32_pclmul snd_seq_midi ghash_clmulni_intel snd_seq_midi_event applesmc input_polldev snd_rawmidi aesni_intel aes_x86_64 lrw gf128mul snd_seq glue_helper ablk_helper cryptd snd_seq_device snd_timer i915 snd thunderbolt lpc_ich bcma drm_kms_helper soundcore drm sbs mei_me mei sbshc mac_hid i2c_algo_bit shpchp video apple_bl parport_pc ppdev lp parport autofs4 hid_generic hid_apple
  [Qui Mar 12 14:45:23 2015]  usbhid hid ahci libahci
  [Qui Mar 12 14:45:23 2015] CPU: 0 PID: 536 Comm: plymouthd Tainted: G        W      3.19.0-9-generic #9-Ubuntu
  [Qui Mar 12 14:45:23 2015] Hardware name: Apple Inc. MacBookAir5,1/Mac-66F35F19FE2A0D05, BIOS MBA51.88Z.00EF.B02.1211271028 11/27/2012
  [Qui Mar 12 14:45:23 2015]  ffffffffc051a4b0 ffff8802647239b8 ffffffff817c09b5 0000000000000007
  [Qui Mar 12 14:45:23 2015]  ffff880264723a08 ffff8802647239f8 ffffffff8107595a 0000000000000086
  [Qui Mar 12 14:45:23 2015]  ffff880262eb0000 00000000fffffeee 0000000030000000 00000000000e50c0
  [Qui Mar 12 14:45:23 2015] Call Trace:
  [Qui Mar 12 14:45:23 2015]  [<ffffffff817c09b5>] dump_stack+0x45/0x57
  [Qui Mar 12 14:45:23 2015]  [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
  [Qui Mar 12 14:45:23 2015]  [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04aba00>] ilk_audio_codec_disable+0x170/0x1b0 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04ac2fe>] intel_audio_codec_disable+0x1e/0x30 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04e3565>] intel_disable_dp+0x75/0xb0 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04bfe4a>] ironlake_crtc_disable+0x15a/0x7b0 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04c1489>] __intel_set_mode+0xa59/0xc80 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04c810b>] intel_crtc_set_config+0xbfb/0xf70 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04c1489>] __intel_set_mode+0xa59/0xc80 [i
  915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc04c810b>] intel_crtc_set_config+0xbfb/0xf
  70 [i915]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc036a926>] drm_mode_set_config_internal+0x
  66/0x100 [drm]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc036ea03>] drm_mode_setcrtc+0x283/0x580 [d
  rm]
  [Qui Mar 12 14:45:23 2015]  [<ffffffffc035fadf>] drm_ioctl+0x1df/0x680 [drm]
  [Qui Mar 12 14:45:23 2015]  [<ffffffff812077b0>] do_vfs_ioctl+0x2e0/0x4e0
  [Qui Mar 12 14:45:23 2015]  [<ffffffff811afbf8>] ? SyS_mmap_pgoff+0xe8/0x290
  [Qui Mar 12 14:45:23 2015]  [<ffffffff81207a31>] SyS_ioctl+0x81/0xa0
  [Qui Mar 12 14:45:23 2015]  [<ffffffff817c7aed>] system_call_fastpath+0x16/0x1b
  [Qui Mar 12 14:45:23 2015] ---[ end trace ae4c204be5c5e719 ]---
  [Qui Mar 12 14:46:51 2015] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [Qui Mar 12 14:46:51 2015] Bluetooth: BNEP filters: protocol multicast
  [Qui Mar 12 14:46:51 2015] Bluetooth: BNEP socket layer initialized
  [Qui Mar 12 14:46:51 2015] Bluetooth: RFCOMM TTY layer initialized

  Resumes normal boot after 90 sec, audio and video are funcional

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