Notepad loads large file on startup, causing multi-gigabyte memory usage

[jetskipenguin]

Compositor

Niri

Distribution

Ubuntu

If Other, please specify

No response

Select your Installation Method

Distro Packaging

Was this your original Installation method?

Yes

If no, specify

No response

dms doctor -vC

Click to expand

## DMS Doctor Report

System

• [ok] Operating System: Ubuntu 26.04.1 LTS
  • ID: ubuntu, Version: 26.04, Arch: amd64
• [ok] Architecture: amd64
• [ok] Display Server: Wayland
  • WAYLAND_DISPLAY=wayland-1

Versions

• [ok] DMS CLI: dms v1.6.2
  • /usr/bin/dms
• [ok] Quickshell: Quickshell 0.3.1 (revision , distributed by Unset)
  • /usr/bin/qs
• [ok] DMS Shell: v1.6.2
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8

Installation

• [ok] DMS Configuration: Found
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8
• [ok] shell.qml: Present
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8/shell.qml
• [info] Install Type: Unknown
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8

Compositor

• [ok] niri: 26.04
  • /usr/bin/niri
• [info] Active: niri
• [ok] Background Blur: Supported
  • Compositor supports ext-background-effect-v1

Quickshell Features

• [ok] Polkit: Available
  • Authentication prompts
• [ok] IdleMonitor: Available
  • Idle detection
• [ok] IdleInhibitor: Available
  • Prevent idle/sleep
• [ok] ShortcutInhibitor: Available
  • Allow shortcut management (niri, Aqueous)
• [ok] BackgroundBlur: Available
  • Background blur API support in Quickshell

Optional Features

• [ok] accountsservice: Available
  • User accounts
• [ok] power-profiles-daemon: Available
  • Power profile management
• [ok] logind: Available
  • Session management
• [ok] cups-pk-helper: Available
  • Printer management
• [info] I2C/DDC: No monitors detected
  • External monitor brightness control
• [ok] qt6-imageformats: Installed (1 formats)
  • Formats: GIF (/usr/lib/x86_64-linux-gnu/qt6/plugins/imageformats)
• [warn] kimageformats: Not installed
  • AVIF, HEIF, JXL support
• [ok] Terminal: kitty
• [ok] Network: NetworkManager
  • NetworkManager present. Using NM API.
• [ok] matugen: Installed
  • Dynamic theming
• [ok] cava: Installed
  • Audio visualizer
• [info] khal: Not installed
  • Calendar events
• [ok] danksearch: Installed
  • File search
• [info] dankcalendar: Not installed
  • Calendar app
• [ok] fprintd: Installed
  • Fingerprint auth
• [info] adw-gtk3: Not installed
  • GTK3 dynamic theming; without it the global CSS override applies

Config Files

• [ok] settings.json: Present
  • /home/collin/.config/DankMaterialShell/settings.json
• [ok] clsettings.json: Present
  • /home/collin/.config/DankMaterialShell/clsettings.json
• [info] plugin_settings.json: Not yet created
  • /home/collin/.config/DankMaterialShell/plugin_settings.json
• [ok] session.json: Present
  • /home/collin/.local/state/DankMaterialShell/session.json
• [ok] dms-colors.json: Present
  • /home/collin/.cache/DankMaterialShell/dms-colors.json

Services

• [ok] dms.service: enabled, active
• [ok] greetd: enabled

Environment

• [info] QT_QPA_PLATFORMTHEME: Not set
• [info] QT_QPA_PLATFORMTHEME_QT6: Not set
• [info] QS_ICON_THEME: Not set
• [info] XDG_MENU_PREFIX: Not set

Fonts

• [ok] Normal Font: Inter Variable
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8/DankCommon/assets/fonts/inter/InterVariable.ttf
• [ok] Monospace Font: Fira Code
  • /run/user/1000/danklinux-shell/fc3c244a314d77c8/DankCommon/assets/fonts/nerd-fonts/FiraCodeNerdFont-Regular.ttf

---

Summary: 0 error(s), 1 warning(s), 34 ok

Description

DMS's built in notepad was reopening a 202 MB .run file as a text document every time DMS started.

I noticed high memory usage on DMS, roughly ~7GB of reserved memory on startup. This occurred whether I used dms restart or rebooted my computer. Upon digging into it I found that this large file was still open in notepad. This was a file I accidentally opened once and then closed out of the notepad app without closing out of the tab.

Expected Behavior

I'd expect DMS to not eagerly load massive text files into the notepad app on startup.

Steps to Reproduce

I can't attach my exact file since it's not a supported file type.

To reproduce:

• Open a ~200 MB text file
• dms restart or sudo reboot now
• Check memory usage on start

Error Messages/Logs

/home/collin/.local/state/DankMaterialShell/notepad-session.json file is attached which has the .run file.

{
  "version": 1,
  "currentTabIndex": 0,
  "tabs": [
    {
      "id": 1787754349655,
      "title": "expressvpn-linux-universal-14.2.1.13658_release.run",
      "filePath": "/home/collin/Downloads/expressvpn-linux-universal-14.2.1.13658_release.run",
      "isTemporary": false,
      "lastModified": "2026-08-26T14:25:49.655Z",
      "cursorPosition": 0,
      "scrollPosition": 0
    }
  ]
}

Screenshots/Recordings

[bbedward]

The startup thing was already fixed on master, referenced commit adds a limit of 5MB with a prompt to confirm loading large files, and the last of it is a regression in QT 6.11 that appears to have been fixed so it should help further in a QT update: https://qt-project.atlassian.net/browse/QTBUG-150286