aw-qt blocks system suspend (task refuses to freeze during suspend)

[aahmozart]

I am on the latest ActivityWatch version.
I have searched the issues of this repo and believe that this is not a duplicate.

OS name and version: Ubuntu 22.04.5 LTS (Jammy Jellyfish)
ActivityWatch version: v0.13.2
Install method: AppImage (activitywatch-linux-x86_64.AppImage)

Describe the bug
System suspend fails because aw-qt refuses to freeze. The kernel reports that a userspace task won’t freeze and the suspend aborts, returning immediately.

To Reproduce

1. Run ActivityWatch normally (aw-qt, aw-watcher-window active).
2. Trigger system suspend (e.g., close lid or leave idle).
3. Suspend fails with a “task refusing to freeze” message.

Expected behavior
ActivityWatch should not block suspend. If a watcher hangs, it should not prevent the system from suspending.

Documentation

journalctl around the failed suspend:

Feb 08 13:25:56 user2-123 systemd-sleep[557864]: Entering sleep state 'suspend'...
Feb 08 13:25:56 user2-123 kernel: PM: suspend entry (deep)
Feb 08 13:26:00 user2-123 kernel: Wakeup pending. Abort CPU freeze
Feb 08 13:26:00 user2-123 kernel: ACPI: PM: Waking up from system sleep state S3
Feb 08 13:26:00 user2-123 kernel: PM: suspend exit
Feb 08 13:26:00 user2-123 kernel: PM: suspend entry (s2idle)
Feb 08 13:26:20 user2-123 kernel: Freezing user space processes failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Feb 08 13:26:20 user2-123 kernel: task:aw-qt state:D stack:0 pid:4214 tgid:4214 ppid:4000 flags:0x00000006
Feb 08 13:26:20 user2-123 kernel: PM: suspend exit
Feb 08 13:26:20 user2-123 systemd-sleep[557864]: Failed to put system to sleep. System resumed again: Device or resource busy

aw-qt log (same boot after resume/restart):

2026-02-08 13:47:59 [INFO ]: Started aw-qt... (aw_qt.main:53)
2026-02-08 13:47:59 [WARNING]: Found matching file but was not executable: /tmp/.mount_activiNgXZi1/aw-qt.desktop (aw_qt.manager:64)
2026-02-08 13:47:59 [INFO ]: Found 8 bundled modules (aw_qt.manager:85)
2026-02-08 13:47:59 [INFO ]: Starting module aw-server (aw_qt.manager:148)
2026-02-08 13:47:59 [INFO ]: Starting module aw-watcher-afk (aw_qt.manager:148)
2026-02-08 13:47:59 [INFO ]: Starting module aw-watcher-window (aw_qt.manager:148)
2026-02-08 13:47:59 [INFO ]: Initialized aw-qt and trayicon successfully (aw_qt.trayicon:264)

aw-watcher-window log:

2026-02-08 13:48:00 [INFO ]: aw-watcher-window started (aw_watcher_window.main:70)
2026-02-08 13:48:01 [INFO ]: Connection to aw-server established by aw-watcher-window (aw_client.client:447)

Additional context
KDE Plasma 5.24.7 on X11, AMD Renoir GPU. External monitor was connected when the suspend happened.

[github-actions]

Hi there!
As you're new to this repo, please make sure you've used an appropriate issue template and searched for duplicates (it helps us focus on actual development!). We'd also like to suggest that you read our contribution guidelines and our code of conduct.
Thanks a bunch for opening your first issue! 🙏

[ErikBjare]

Huh, I really have no idea what could cause this.