My computer (model Lenovo A540 Haswell) hangs indefinitely at shutdown and doesn't react to most keyboard combinations. I have to press the power button for a few (~5) seconds in order to shut it down.
This started happening after switching from Lubuntu 15.10 to Lubuntu 16.04.
I don't have this problem with Windows 10 (dual boot).
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-53-generic 4.4.0-53.74
ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30
Uname: Linux 4.4.0-53-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: nico 2096 F.... pulseaudio
/dev/snd/controlC1: nico 2096 F.... pulseaudio
CurrentDesktop: LXDE
Date: Mon Dec 19 20:54:01 2016
HibernationDevice: RESUME=UUID=ef8c9700-bfb5-44a4-8d49-f82e03fd6e68
InstallationDate: Installed on 2016-02-13 (310 days ago)
InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO F0AN
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=4d7d95e5-cfce-4e21-84fb-2dd965595f63 ro acpi=noirq net.ifnames=0 biosdevname=0 quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-53-generic N/A
linux-backports-modules-4.4.0-53-generic N/A
linux-firmware 1.157.6
SourcePackage: linux
StagingDrivers: r8723au
UpgradeStatus: Upgraded to xenial on 2016-12-17 (2 days ago)
dmi.bios.date: 09/30/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: O00KT19AUS
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900058 STD
dmi.chassis.type: 13
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AN:pvrLenovoA540:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion:
dmi.product.name: F0AN
dmi.product.version: Lenovo A540
dmi.sys.vendor: LENOVO
This change was made by a bot.