Automatic updates take very long to complete #1030

Describe the bug
Automatic updates for Linux Mint Cinnamon 22.3 take a very long time to complete. I have a fast broadband connection and I've enabled mirrors close to me. I'm trying to install a 400 MB Nvidia drivers update. When installed manually, this would take me 2 minutes at most. Now that it's trying to update it automatically, the update has taken 30 minutes, and it is not completed yet. I very much doubt that this is a connection speed or mirror issue. I noticed this issue in previous versions of Linux Mint.

Edit 1: the update finished on 8.26 AM, two minutes ago.
Edit 2: Why is update manager detecting the update three times, and not updating it right away?

Screenshots
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To Reproduce
Steps to reproduce the behavior:

1. Have automatic updates enabled
2. Wait for an update to appear
3. Do not update, let automatic updates kick in
4. Slow update

Expected behavior
A clear and concise description of what you expected to happen.

Distribution:

• [x ] Linux Mint
• LMDE
• Other (please specify)

Software version:
7.1.4

Logs:
2026.03.10@07:22 ++ Launching Update Manager
2026.03.10@07:22 ++ Initial refresh will happen in 0 day(s), 0 hour(s) and 10 minute(s)
2026.03.10@07:22 ++ Inhibited power management
2026.03.10@07:22 ++ Checking for updates
2026.03.10@07:22 ++ System is up to date
2026.03.10@07:22 ++ Refresh finished
2026.03.10@07:22 ++ Resumed power management
2026.03.10@07:22 ++ Tracker: Mintupdate update button was pressed recently: 1 days ago
2026.03.10@07:32 ++ Update Manager is in tray mode; performing initial refresh
2026.03.10@07:32 ++ Auto refresh will happen in 0 day(s), 0 hour(s) and 1 minute(s)
2026.03.10@07:32 ++ Inhibited power management
2026.03.10@07:32 ++ Refreshing cache
2026.03.10@07:32 ++ Refreshing cache for Cinnamon updates
2026.03.10@07:32 ++ Refreshing cache for Flatpak updates
2026.03.10@07:32 ++ Checking for updates
2026.03.10@07:32 ++ Found 1 software updates
2026.03.10@07:32 ++ Refresh finished
2026.03.10@07:32 ++ Resumed power management
2026.03.10@07:33 ++ Update Manager is in tray mode; performing auto refresh
2026.03.10@07:33 ++ Auto refresh will happen in 0 day(s), 1 hour(s) and 59 minute(s)
2026.03.10@07:33 ++ Inhibited power management
2026.03.10@07:33 ++ Refreshing cache
2026.03.10@07:33 ++ Refreshing cache for Cinnamon updates
2026.03.10@07:33 ++ Refreshing cache for Flatpak updates
2026.03.10@07:33 ++ Checking for updates
2026.03.10@07:33 ++ Found 1 software updates
2026.03.10@07:33 ++ Refresh finished
2026.03.10@07:33 ++ Resumed power management
2026.03.10@07:35 ++ Inhibited power management
2026.03.10@07:35 ++ Checking for updates
2026.03.10@07:35 ++ Found 1 software updates
2026.03.10@07:35 ++ Refresh finished
2026.03.10@07:35 ++ Resumed power management
2026.03.10@08:26 ++ Changes to the package cache detected; triggering refresh
2026.03.10@08:26 ++ Inhibited power management
2026.03.10@08:26 ++ Checking for updates
2026.03.10@08:26 ++ System is up to date
2026.03.10@08:26 ++ Refresh finished
2026.03.10@08:26 ++ Resumed power management

11 MB update took 30 minutes to install

Logs 2
2026.03.14@09:05 ++ Launching Update Manager
2026.03.14@09:05 ++ Initial refresh will happen in 0 day(s), 0 hour(s) and 10 minute(s)
2026.03.14@09:05 ++ Inhibited power management
2026.03.14@09:05 ++ Checking for updates
2026.03.14@09:05 ++ System is up to date
2026.03.14@09:05 ++ Refresh finished
2026.03.14@09:05 ++ Resumed power management
2026.03.14@09:05 ++ Tracker: Mintupdate update button was pressed recently: 1 days ago
2026.03.14@09:15 ++ Update Manager is in tray mode; performing initial refresh
2026.03.14@09:15 ++ Auto refresh will happen in 0 day(s), 0 hour(s) and 1 minute(s)
2026.03.14@09:15 ++ Inhibited power management
2026.03.14@09:15 ++ Refreshing cache
2026.03.14@09:15 ++ Refreshing cache for Cinnamon updates
2026.03.14@09:15 ++ Refreshing cache for Flatpak updates
2026.03.14@09:15 ++ Checking for updates
2026.03.14@09:15 ++ Found 2 software updates
2026.03.14@09:15 ++ Refresh finished
2026.03.14@09:15 ++ Resumed power management
2026.03.14@09:16 ++ Update Manager is in tray mode; performing auto refresh
2026.03.14@09:16 ++ Auto refresh will happen in 0 day(s), 1 hour(s) and 59 minute(s)
2026.03.14@09:16 ++ Inhibited power management
2026.03.14@09:16 ++ Refreshing cache
2026.03.14@09:16 ++ Refreshing cache for Cinnamon updates
2026.03.14@09:16 ++ Refreshing cache for Flatpak updates
2026.03.14@09:16 ++ Checking for updates
2026.03.14@09:16 ++ Found 2 software updates
2026.03.14@09:16 ++ Refresh finished
2026.03.14@09:16 ++ Resumed power management
2026.03.14@09:46 ++ Inhibited power management
2026.03.14@09:46 ++ Refreshing cache
2026.03.14@09:46 ++ Refreshing cache for Flatpak updates
2026.03.14@09:46 ++ Refreshing cache for Cinnamon updates
2026.03.14@09:46 ++ Checking for updates
2026.03.14@09:46 ++ System is up to date
2026.03.14@09:46 ++ Refresh finished
2026.03.14@09:46 ++ Resumed power management
2026.03.14@09:46 ++ Inhibited power management
2026.03.14@09:46 ++ Refreshing cache
2026.03.14@09:46 ++ Refreshing cache for Cinnamon updates
2026.03.14@09:46 ++ Refreshing cache for Flatpak updates
2026.03.14@09:46 ++ Checking for updates
2026.03.14@09:46 ++ System is up to date
2026.03.14@09:46 ++ Refresh finished
2026.03.14@09:46 ++ Resumed power management

Screenshot