No mouse and/or wifi with latest kernel

[Phil Boutros]

After upgrading to linux-image-4.8.0-37-generic, bootup suddenly takes much longer than with previous kernels (minutes vs 14 seconds or so), usually the mouse (built in trackpad) doesn't do anything and cursor pointer isn't there, and wifi doesn't work either. On one occasion, both of those worked and everything worked correctly. One other instance had just the mouse/cursor, but no wifi. All other times, neither of the two were present.

Booting up the previous kernel (4.8.0-34.36) makes everything work properly.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.8.0-37-generic 4.8.0-37.39
ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11
Uname: Linux 4.8.0-34-generic x86_64
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: philb 2775 F.... pulseaudio
 /dev/snd/pcmC1D0p: philb 2775 F...m pulseaudio
 /dev/snd/controlC1: philb 2775 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Feb 3 16:19:22 2017
HibernationDevice: RESUME=UUID=b4ef2eb3-4df9-46c8-84ff-0401a111b715
InstallationDate: Installed on 2015-07-06 (578 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Dell Inc. Latitude E7450
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-34-generic root=UUID=222170f0-c6c8-4417-adbb-2ce31a617aac ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.8.0-34-generic N/A
 linux-backports-modules-4.8.0-34-generic N/A
 linux-firmware 1.161.1
SourcePackage: linux
UpgradeStatus: Upgraded to yakkety on 2016-10-16 (110 days ago)
dmi.bios.date: 05/17/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A13
dmi.board.name: 06HN6G
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA13:bd05/17/2016:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn06HN6G:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7450
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Phil Boutros (philb61)]

Not sure why they weren't detected anymore, but adding the module for the wifi controller and sound card to /etc/modules seems to have solved the problem for now.

[Joseph Salisbury (jsalisbury)]

I'll mark the bug as incomplete for now, since you no longer see it. Just change the status back to confirmed if the bug returns.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu Yakkety) because there has been no activity for 60 days.]