Same problem here. I'm using Ubuntu 18.10 LiveCD and from time to time my Ubuntu just freezes and when it happens my pendrive LED blinks like crazy. It's hard to recover from it, but yesterday I did. The log it at the post below.
Here's my post about it: https://unix.stackexchange.com/questions/483898 /my-shell-script-to-periodically-free-some-memory-up-with-ubuntu-18-10 -livecd-wit#_=_ -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1588009 Title: "libinput bug: timer offset negative" keeps coming up in syslog Status in libinput: Invalid Status in Ubuntu GNOME: New Status in gnome-shell package in Ubuntu: Confirmed Status in libinput package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Bug description: I have just recently looked in my syslog and discovered that the following message shows up a lot daily so I thought I should report it: /usr/lib/gdm3/gdm-x-session[1707]: (EE) libinput bug: timer offset negative ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: libinput10 1.2.3-1ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: GNOME Date: Wed Jun 1 18:39:08 2016 InstallationDate: Installed on 2016-05-15 (17 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: libinput UpgradeStatus: Upgraded to xenial on 2016-05-28 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/libinput/+bug/1588009/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

