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 Ubuntu-X, which is subscribed to libinput in Ubuntu. https://bugs.launchpad.net/bugs/1588009 Title: "libinput bug: timer offset negative" keeps coming up in syslog To manage notifications about this bug go to: https://bugs.launchpad.net/libinput/+bug/1588009/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp