Public bug reported:
I've upgraded kernel from pre-release linux-image-4.4.0-18-generic:amd64
to linux-image-4.4.0-21-generic and am now getting random Wifi failures
(was stable before)
Those leave traces like the following in dmesg
brcmfmac 0000:02:00.0: Direct firmware load for
brcm/brcmfmac43602-pcie.txt failed with error -2
Usually rmmod brcmfmac && modprobe brcmfmac successfully load the
driver, and wifi is functional once more
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: peter 1994 F.... pulseaudio
Date: Tue Apr 26 20:59:10 2016
HibernationDevice: RESUME=UUID=39ea85a5-736e-4257-8844-e7da04637612
InstallationDate: Installed on 2016-02-11 (74 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160211)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04f3:21d5 Elan Microelectronics Corp.
Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp.
Bus 001 Device 004: ID 0c45:6713 Microdia
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 15 9550
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro noprompt persistent quiet splash
vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-21-generic N/A
linux-backports-modules-4.4.0-21-generic N/A
linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/25/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.01.19
dmi.board.name: 0N7TVV
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr01.01.19:bd01/25/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 15 9550
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1575321
Title:
brcmfmac: Direct firmware load failed
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