Xorg log: "scheduled expiry is in the past... your system is too slow" appears whenever I move the mouse cursor while ubuntu is installing

[Seija K.]

During the freeze, the output of the install had a message from "gdm-x-session" saying "your system is too slow".

To reproduce:
1. Launch the Ubuntu installer
2. Begin the installation process
3. When the installation process begins, move the cursor around
4. Notice how the PC freezes and drops mouse events

Description: Ubuntu Focal Fossa (development branch)
Release: 20.04

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mutter 3.36.0-2ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CasperVersion: 1.442
Date: Thu Apr 9 17:23:29 2020
LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CasperVersion: 1.442
DistroRelease: Ubuntu 20.04
LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
Package: mutter 3.36.0-2ubuntu1
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Tags: focal
Uname: Linux 5.4.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True

[Seija K. (rose128)]

apport information

[Seija K. (rose128)]

apport information

[Seija K. (rose128)]

"gdm-x-session (II) event8 - DELL Touchpad SYN_DROPPED event - some input events have been lost"

Happens every time I perform the following steps above.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1870597, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.