I just reinstalled my system; I use a script to know my brightness and audio volume but I can't get it working anymore.
With this
notify-send 'Hello world!' -i dialog-information
I only get the text. If I try this to have a progress bar
notify-send 'Hello world!' -i dialog-information -h int:value:50
I just get a notification with 1px height.
I installed notify-osd-icons to have more icons, but it didn't help.
The arguements have changed?