I've experienced same issue. Kept my machine running overnight with open gnome-shells.
On the morning GPU-Util was about 95% and memory usage ~500 mb for each tab Cold start: +-----------------------------------------------------------------------------+ | Processes: GPU Memory | | GPU PID Type Process name Usage | |=============================================================================| | 0 1422 G /usr/lib/xorg/Xorg 73MiB | | 0 1640 G /usr/bin/gnome-shell 118MiB | | 0 4194 G /usr/lib/xorg/Xorg 379MiB | | 0 4326 G /usr/bin/gnome-shell 257MiB | System: Distributor ID: Ubuntu Description: Ubuntu 18.04.3 LTS Release: 18.04 Codename: bionic 5.0.0-31-generic x86_64 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1823544 Title: Unreasonable NVIDIA GPU VRAM usage on gnome-shell Status in gnome-shell package in Ubuntu: New Bug description: GPU: NVIDIA GTX 1060 3GB Ubuntu: 19.04, Kernel Linux luky-pc 5.0.0-8-generic #9-Ubuntu SMP Tue Mar 12 21:58:11 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux NVIDIA driver version: 418.56 Display settings: BenQ XL2411Z, 144Hz monitor, 1920x1080p I have noticed this strange behavior only on gnome-shell where the overall gnome-shell desktop VRAM usage was taking up to 1GB of GPU VRAM which does not happen on other desktops, or on Windows, happens after some hours of normal desktop usage Even the system RAM increases a lot during normal usage, but remains acceptable This behaviour can be observed by using "nvidia-smi" a tool from the NVIDIA proprietary driver gnome-shell VRAM usage on a cold start: 139MB, + 9 MB X.org VRAM usage on cold start: 48MB + 18MB Total: 214MB gnome-shell VRAM usage after some hours of normal usage: 445MB + 83 MB X.org VRAM usage after some hours of normal usage: 244MB + 18MB Total: 800MB On windows or other desktops the GPU VRAM usage remains the same --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu25 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 19.04 NonfreeKernelModules: nvidia_modeset nvidia Package: gnome-shell 3.32.0-1ubuntu1 PackageArchitecture: amd64 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=it_IT.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1 Tags: disco Uname: Linux 5.0.0-8-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1823544/+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