Public bug reported:
i7-8750H (6 cores, 12 threads)
32GB DDR
GTX 1070 Max-Q
500GB SSD
4K external monitor (Dell U2718Q)
No problem without the 4K monitor hooked up. When it is hooked up, CPU1
~ 100% in idle. Gnome-shell and Xorg the problem.
nvidia 410 from nvidia-ppa.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.3-0ubuntu0.18.04.2
ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Nov 27 00:22:13 2018
DisplayManager: gdm3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic third-party-packages
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https://bugs.launchpad.net/bugs/1805189
Title:
gnome-shell high CPU usage (~100% CPU1) in idle with external monitor
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