The message `localhost systemd-udevd[25252]: Process '/bin/chmod 0666 ' failed with exit code 1.` makes up more than 50 % of `/var/log/syslog`. It is not useful without further information and either those should be added, the message be suppressed or the reason for it be fixed.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: udev 231-9ubuntu3
ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
NonfreeKernelModules: zfs zunicode icp zcommon znvpair zavl
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
CustomUdevRuleFiles: 60-ssd-scheduler.rules 99-sbig.rules 50-firmware.rules 60-persistent-v4l.rules 90-alsa-restore.rules 90-alsa-ucm.rules 51-android.rules 56-hpmud.rules 60-vboxdrv.rules
Date: Mon Mar 13 21:29:06 2017
InstallationDate: Installed on 2015-12-12 (457 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20221
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-41-generic root=UUID=791b47e7-915d-4d5a-bce0-d7e9b660a2ab ro rootflags=subvol=ubuntu-main-root
SourcePackage: systemd
UpgradeStatus: Upgraded to yakkety on 2016-10-17 (147 days ago)
dmi.bios.date: 07/12/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 71CN51WW(V1.21)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900003WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad Z500 Touch
dmi.modalias: dmi:bvnLENOVO:bvr71CN51WW(V1.21):bd07/12/2013:svnLENOVO:pn20221:pvrLenovoIdeaPadZ500Touch:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadZ500Touch:
dmi.product.name: 20221
dmi.product.version: Lenovo IdeaPad Z500 Touch
dmi.sys.vendor: LENOVO
Status changed to 'Confirmed' because the bug affects multiple users.