Firefox was frozen and I found that in my syslog.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-19-generic 4.10.0-19.21
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: salva 4130 F.... pulseaudio
CurrentDesktop: XFCE
Date: Thu Apr 20 15:01:13 2017
HibernationDevice: RESUME=UUID=a3da5b5a-6ed1-4413-b26a-df9bfc240899
InstallationDate: Installed on 2014-02-24 (1150 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131219)
MachineType: ASUS All Series
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-19-generic root=UUID=58b1a618-d94e-43d7-9dc3-19912c94cf27 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.10.0-19-generic N/A
linux-backports-modules-4.10.0-19-generic N/A
linux-firmware 1.164
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/30/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0305
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81M-C
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0305:bd08/30/2013:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH81M-C:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
Kernel log attached