Ukuu pops up multiple update notices if left alone for long enough

[kode54]

Describe the bug
If update notices are triggered while the machine is locked, the windows continue opening up every two hours until dismissed.

To Reproduce
Steps to reproduce the behavior:

1. Lock the desktop.
2. Wait for a kernel update.
3. Unlock the desktop.

Alternate steps to reproduce

1. Wait for a kernel update.
2. Run ukuu --notify repeatedly.

Expected behavior
A single update notice is on the screen, notifying of a new kernel update.

Screenshots
Can't do this, I just installed the update.

System (please complete the following information):

• Linux Distribution Name and Version: Ubuntu 18.04.1
• Desktop: KDE
• Application Version: v18.9

[jboelter]

Just came here looking for this issue, here's a screenshot.

[awtotty]

The problem is that even though ukuu is sending a timeout option with the notification, the timeout is not handled appropriately by notification manager.

This is a known Ubuntu and GNOME Shell design decision, which results in the expire time option to be
completely ignored. Seems to be true for KDE, too. Check man notify-send:

-t, --expire-time=TIME The duration, in milliseconds, for the notification to appear on screen. (Ubuntu's Notify OSD and GNOME Shell both ignore this parameter.)

See this thread and this bug report.

If you want the timeout to be implemented by your notification manager, try:

sudo add-apt-repository ppa:leolik/leolik
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install libnotify-bin
pkill notify-osd

which adds additional features to notify-send, including making the timeout option work.