Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.11 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, 
please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as 
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc7-saucy/

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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

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https://bugs.launchpad.net/bugs/1217321

Title:
  iwifi crash and firmware pb when power schema change

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Issue: lost access to Wifi driver (even if rmmod / insmod)

  How to reproduce unplug power and move to battery, or lost/regain
  signal.

  See this in syslog:
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720802]
  WARNING: at
  
/build/buildd/linux-lts-quantal-3.5.0/drivers/net/wireless/iwlwifi/iwl-io.c:127
  iwl_grab_nic_access.part.0+0x6f/0x8e [iwlwifi]()
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720808]
  Hardware name: HP Spectre Ultrabook PC
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720813]
  Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff)
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720817]
  Modules linked in: iwlwifi snd_hrtimer ip6table_filter ip6_tables
  ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4
  nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM
  iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables dm_crypt
  snd_hda_codec_hdmi snd_hda_codec_idt bridge stp llc coretemp kvm_intel
  kvm arc4 hp_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep
  snd_pcm parport_pc rfcomm ppdev bnep snd_seq_midi microcode snd_rawmidi
  snd_seq_midi_event pn533 nfc snd_seq binfmt_misc psmouse joydev
  snd_timer snd_seq_device serio_raw btusb bluetooth lpc_ich tpm_tis
  uvcvideo videobuf2_core videodev videobuf2_vmalloc nls_iso8859_1
  videobuf2_memops snd soundcore snd_page_alloc mac80211 mei cfg80211
  mac_hid lp parport hid_generic usbhid hid ghash_clmulni_intel
  aesni_intel cryptd aes_x86_64 wmi ahci libahci i915 drm_kms_helper r8169
  drm i2c_algo_bit video [last unloaded: iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720989]
  Pid: 13, comm: kworker/2:0 Tainted: G        W    3.5.0-39-generic
  #60~precise1-Ubuntu
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.720994]
  Call Trace:
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721010]
  [<ffffffff81052e7f>] warn_slowpath_common+0x7f/0xc0
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721020]
  [<ffffffff81052f76>] warn_slowpath_fmt+0x46/0x50
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721054]
  [<ffffffffa0600dc9>] iwl_grab_nic_access.part.0+0x6f/0x8e [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721080]
  [<ffffffffa05d743e>] iwl_grab_nic_access+0x2e/0x30 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721106]
  [<ffffffffa05d792b>] iwl_write_prph+0x3b/0x150 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721136]
  [<ffffffffa05e8b63>] iwl_apm_init+0xd3/0x140 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721163]
  [<ffffffffa05e9168>] iwl_trans_pcie_start_hw+0x138/0x290 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721185]
  [<ffffffffa05ca5ca>] iwl_op_mode_dvm_start+0x1da/0x5e0 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721198]
  [<ffffffff8117090b>] ? rmap_walk_ksm+0x12b/0x140
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721224]
  [<ffffffffa05e774f>] iwl_ucode_callback+0x29f/0x460 [iwlwifi]
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721239]
  [<ffffffff814392e0>] request_firmware_work_func+0x70/0xd0
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721250]
  [<ffffffff81071c47>] process_one_work+0x127/0x470
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721261]
  [<ffffffff81072e85>] worker_thread+0x165/0x370
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721272]
  [<ffffffff81072d20>] ? manage_workers.isra.29+0x130/0x130
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721281]
  [<ffffffff81077e03>] kthread+0x93/0xa0
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721291]
  [<ffffffff816a78e4>] kernel_thread_helper+0x4/0x10
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721301]
  [<ffffffff81077d70>] ? flush_kthread_worker+0xb0/0xb0
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721310]
  [<ffffffff816a78e0>] ? gs_change+0x13/0x13
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.721315]
  ---[ end trace 4928727756143704 ]---
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.738869]
  iwlwifi 0000:01:00.0: Unknown hardware type
  Aug 27 13:27:44 thomas-HP-Spectre-Ultrabook-PC kernel: [10315.738881]
  iwlwifi 0000:01:00.0: Unable to init EEPROM

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image 3.2.0.52.62
  ProcVersionSignature: Ubuntu 3.5.0-39.60~precise1-generic 3.5.7.17
  Uname: Linux 3.5.0-39-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  thomas     2344 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7d10000 irq 48'
     Mixer name : 'Intel PantherPoint HDMI'
     Components : 'HDA:111d76e0,103c1893,00100102 
HDA:80862806,80860101,00100000'
     Controls      : 30
     Simple ctrls  : 12
  Date: Tue Aug 27 13:32:12 2013
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=5e140a57-fed3-43db-9d8b-c8208c1bd4ba
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 
(20130213)
  MachineType: Hewlett-Packard HP Spectre Ultrabook PC
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-39-generic 
root=UUID=c7e1b812-852e-491c-9ec5-4941d7ec68b4 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.5.0-39-generic N/A
   linux-backports-modules-3.5.0-39-generic  N/A
   linux-firmware                            1.79.6
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/07/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F.14
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 1893
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 75.27
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF.14:bd09/07/2012:svnHewlett-Packard:pnHPSpectreUltrabookPC:pvr087C120400304E00000120150:rvnHewlett-Packard:rn1893:rvr75.27:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Spectre Ultrabook PC
  dmi.product.version: 087C120400304E00000120150
  dmi.sys.vendor: Hewlett-Packard

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