Here : https://bugs.freedesktop.org/show_bug.cgi?id=96312 some people said this is caused by a "slow compositor" . In my case, it seems to me, these log entries are probably caused by a Xorg process running with 100% cpu blocking the UI for ~ 1 minute. This happens after animations played (e.g. progressbars), window resizing, scrolling, when I have many GUI apps open. I am still investigating.
My system: nvidia driver, 2 old GPUs, 18.04 with gdm3+Xorg -- 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
