# Black Screen on Sketch 'Run'

**URL:** <https://discourse.processing.org/t/black-screen-on-sketch-run/32232>\
**Category:** Processing\
**Created:** [September 13, 2021, 2:35pm UTC](https://discourse.processing.org/t/black-screen-on-sketch-run/32232 "2021-09-13T14:35:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![binge\_flow](https://avatars.discourse-cdn.com/v4/letter/b/aca169/32.png) [@binge\_flow](https://discourse.processing.org/u/binge_flow)\
**Post date:** [September 13, 2021, 2:35pm UTC](https://discourse.processing.org/t/black-screen-on-sketch-run/32232/1 "2021-09-13T14:35:27Z")

</div>

I am running the Processing client (latest beta version) on a Macbook Pro 2019: Catalina Version 10.15.7. When I save my work and click the ‘Run’ button my display goes black for a couple of seconds and then it comes back with the sketch rendered. I was having a hard time finding similar issues. Any idea what could be causing this?

---

<div class="post-metadata">

**Author:** ![micuat](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/micuat/32/19407_2.png) [@micuat](https://discourse.processing.org/u/micuat)\
**Post date:** [September 13, 2021, 4:57pm UTC](https://discourse.processing.org/t/black-screen-on-sketch-run/32232/2 "2021-09-13T16:57:23Z")

</div>

hi! welcome to the forum! does it happen with a specific sketch? if so, could you share it? does it happen with other versions, for example, processing 3? it may be helpful to open an issue on github too:

> **[Issues · processing/processing4](https://github.com/processing/processing4/issues/)**
>
> Processing 4.x releases (currently in “beta”) that use Java 11 - Issues · processing/processing4

---

<div class="post-metadata">

**Author:** ![binge\_flow](https://avatars.discourse-cdn.com/v4/letter/b/aca169/32.png) [@binge\_flow](https://discourse.processing.org/u/binge_flow)\
**Post date:** [September 13, 2021, 5:52pm UTC](https://discourse.processing.org/t/black-screen-on-sketch-run/32232/3 "2021-09-13T17:52:22Z")

</div>

Thanks for the welcome! And I haven’t tried creating any other sketches. I was downloading it for the first time on this machine and was getting a basic sketch setup when I noticed the issue. I have not tried other versions yet either but will try older versions. If the problem does not persist I will most likely post it as an issue on github.