Those KMS messages are due to MUTTER_DEBUG=kms which should not be set
by default. Do you have it in /etc/environment or /etc/environment.d/* ?
There's also a little bit of bug 2034664 in your log.
** Tags added: logspam
** Changed in: gnome-shell (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2034722
Title:
High CPU usage causing slowdown
Status in gnome-shell package in Ubuntu:
Incomplete
Bug description:
I have been experiencing high CPU usage from gnome-shell since
upgrading to Mantic. htop shows gnome-shell consuming around 120% of
the CPU. This ends up resulting a very sluggish feeling desktop.
# System Details Report
---
## Report details
- **Date generated:** 2023-09-07 16:31:07
## Hardware Information:
- **Hardware Model:** Apple Inc. MacBookPro12,1
- **Memory:** 8.0 GiB
- **Processor:** Intel® Core™ i5-5257U × 4
- **Graphics:** Intel® Iris® Graphics 6100
(BDW GT3)
- **Disk Capacity:** (null)
## Software Information:
- **Firmware Version:** 184.0.0.0.0
- **OS Name:** Ubuntu Mantic Minotaur
(development branch)
- **OS Build:** (null)
- **OS Type:** 64-bit
- **GNOME Version:** 45.rc
- **Windowing System:** Wayland
- **Kernel Version:** Linux 6.3.0-7-generic
ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: gnome-shell 45~rc-0ubuntu1
ProcVersionSignature: Ubuntu 6.3.0-7.7-generic 6.3.5
Uname: Linux 6.3.0-7-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 7 16:25:02 2023
DisplayManager: gdm3
InstallationDate: Installed on 2022-03-31 (525 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Beta amd64
(20220329.1)
RelatedPackageVersions: mutter-common 45~rc-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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