# Repeating Timer does not fire events if no other event occurs
**URL:** https://discourse.vtk.org/t/repeating-timer-does-not-fire-events-if-no-other-event-occurs/2873
**Category:** Support
**Created:** [March 24, 2020, 10:58am UTC](https://discourse.vtk.org/t/repeating-timer-does-not-fire-events-if-no-other-event-occurs/2873 "2020-03-24T10:58:25Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@TomLKoller](https://discourse.vtk.org/u/TomLKoller)
#### Post date: [March 24, 2020, 10:58am UTC](https://discourse.vtk.org/t/repeating-timer-does-not-fire-events-if-no-other-event-occurs/2873/1 "2020-03-24T10:58:25Z")
I was trying the Animation example [https://lorensen.github.io/VTKExamples/site/Cxx/Utilities/Animation/](https://lorensen.github.io/VTKExamples/site/Cxx/Utilities/Animation/)
and it seems as the RepeatingTimer does only fire events when i hover the mouse over the window. When i stop the mouse at the window it stops firing the events.
Does someone has any idea on that ?
I am running vtk on a ubuntu 18.04.4 LTS with gcc 7.5.0
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### Author:  [@MarcCote](https://discourse.vtk.org/u/MarcCote)
#### Post date: [June 4, 2020, 2:04am UTC](https://discourse.vtk.org/t/repeating-timer-does-not-fire-events-if-no-other-event-occurs/2873/2 "2020-06-04T02:04:33Z")
I have the same issue when upgrading to VTK9 from VTK8.1.2. I’m also running linux.
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### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [June 4, 2020, 2:08am UTC](https://discourse.vtk.org/t/repeating-timer-does-not-fire-events-if-no-other-event-occurs/2873/3 "2020-06-04T02:08:55Z")
This looks like a bug, you may want to open an issue here : [https://gitlab.kitware.com/vtk/vtk/-/issues](https://gitlab.kitware.com/vtk/vtk/-/issues)