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[Bug 1398458] Re: kernel fails to load iwlwifi firmware - disable CONFIG_FW_LOADER_USER_HELPER


I don't think it makes sense to change this in the 3.16 kernel, which is
currently what's being used in vivid. On the surface it makes sense to
disable CONFIG_FW_LOADER_USER_HELPER in the 3.18 branch, except that
ultimately the vivid kernel will also be released for trusty. In theory
things should still just work, but potentially there are some corner
cases which still rely on the fallback.

In the end I guess we probably ought to change it though.

** Changed in: linux (Ubuntu)
       Status: Triaged => In Progress

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Seth Forshee (sforshee)

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  kernel fails to load iwlwifi firmware - disable

Status in linux package in Ubuntu:
  In Progress
Status in systemd package in Ubuntu:
  Fix Released
Status in openSUSE:
  Fix Released

Bug description:
  Using current vivid, when using udev 217 wlan0 is missing, it's there
  and working fine when downgrading to 215

  Right after boot, kernel shows

  [ 6.586593] iwlwifi 0000:02:00.0: Direct firmware load failed with error -2
  [ 6.586598] iwlwifi 0000:02:00.0: Falling back to user helper

  After manually enabling the card, kernel shows

  Dec  2 11:37:08 localhost kernel: [  127.133185] iwlwifi 0000:02:00.0:
  loaded firmware version build 25532 op_mode iwldvm

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: udev 217-2ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-26.34-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-26-generic i686
  ApportVersion: 2.14.7-0ubuntu10
  Architecture: i386
  CurrentDesktop: Unity
  CustomUdevRuleFiles: 80-net-name-slot.rules 81-canonij_prn.rules
  Date: Tue Dec  2 17:39:08 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2010-10-09 (1515 days ago)
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  MachineType: Dell Inc. Latitude E6410
   Socket 0:
     no product info available
   Socket 0:
     no card
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-26-generic root=UUID=555ebc11-d747-44d3-af56-5e7d17851ce3 ro quiet splash init=/bin/systemd vt.handoff=7
  SourcePackage: systemd
   current build number: 0
   device name:
   channel: daily
   last update: Unknown
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/21/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A14
  dmi.board.name: 0HNGW4
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA14:bd04/21/2013:svnDellInc.:pnLatitudeE6410:pvr0001:rvnDellInc.:rn0HNGW4:rvr:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6410
  dmi.product.version: 0001
  dmi.sys.vendor: Dell Inc.

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