Thanks for the bug report. Please ensure all third party extensions are
deleted, not just disabled:
cd ~/.local/share/gnome-shell/
rm -rf extensions
and then log in again. This is necessary because the extension
architecture is such that a buggy extension may still affect the shell
even if it fails to enable. And it's necessary for us to be absolutely
sure the leak is originating from an Ubuntu package.
Also it's interesting you mention shared and virtual memory only. It is
normal for gnome-shell to use 5GB of address space (virtual memory), but
address space is not actual memory usage. Please confirm which process
is actually increasing its resource usage over time.
** Summary changed:
- gnome-shell uses increasingly lots of memory
+ Ubuntu 25.10 uses increasingly lots of memory
** Package changed: gnome-shell (Ubuntu) => ubuntu
** Changed in: ubuntu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2122654
Title:
Ubuntu 25.10 uses increasingly lots of memory
Status in Ubuntu:
Incomplete
Bug description:
After I upgraded to Ubuntu 25.10, I noticed that I'm periodically running out
of memory couple of times per day. `watch free -h` indeed shows a huge shared
memory usage (3 GB and rising). The shared memory usage climbs up at a rate
about 3mb/s and there's apparently no ceiling - something just uses all of the
memory.
`htop` shows no app with a huge usage of the shared memory, but I do notice
gnome-shell using a lot of virtual memory (5G and climbing up).
When I log out and log back in, the shared memory usage is reset to
100mb and starts climbing up again. `df -h|grep tmpfs` shows a stable
usage of 2mb, so this can't be the culprit. This leads me to believe
that `gnome-shell` is the culprit here. I'll try to disable all addons
and I'll try again.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-shell 49~rc-0ubuntu1
ProcVersionSignature: Ubuntu 6.17.0-3.3-generic 6.17.0-rc3
Uname: Linux 6.17.0-3-generic aarch64
ApportVersion: 2.33.1-0ubuntu2
Architecture: arm64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 12 11:52:22 2025
DisplayManager: gdm3
InstallationDate: Installed on 2024-10-08 (339 days ago)
InstallationMedia: Ubuntu-Server 24.04.1 LTS "Noble Numbat" - Release arm64
(20240827)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/usr/bin/fish
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 49~rc-0ubuntu2
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to questing on 2025-09-12 (0 days ago)
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