Sebastien tested this, and it works:
SUBSYSTEM=="firmware", ACTION=="add", ATTR{loading}="-1"
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https://bugs.launchpad.net/bugs/1398458
Title:
kernel fails to load iwlwifi firmware - disable
CONFIG_FW_LOADER_USER_HELPER
Status in linux package in Ubuntu:
Triaged
Status in systemd package in Ubuntu:
In Progress
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 9.221.4.1 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
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
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
SystemImageInfo:
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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