# VTK9 blank rendering window

**URL:** https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588
**Category:** Development
**Created:** [April 19, 2021, 11:35pm UTC](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588 "2021-04-19T23:35:09Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![marcomusy](https://discourse.vtk.org/user_avatar/discourse.vtk.org/marcomusy/32/95_2.png) [@marcomusy](https://discourse.vtk.org/u/marcomusy)
#### Post date: [April 19, 2021, 11:35pm UTC](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588/1 "2021-04-19T23:35:09Z")

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I finally found out that If I set in my nvidia-settings “Override Application Settings”

![Screenshot from 2021-04-19 23-50-38](https://discourse.vtk.org/uploads/default/original/2X/4/4c1c0f8d5663116dc22253f5ae87713119a1d425.png)

then I get a completely blank rendering window:

![Screenshot from 2021-04-20 01-31-08](https://discourse.vtk.org/uploads/default/original/2X/3/3baae79477c185d46efad9bf47d59d2186a0b399.png)

my system:

```auto
vtk version : 9.0.1
python version : 3.8.5 (default, Sep 4 2020, 07:30:14) [GCC 7.3.0]
system : Linux 5.4.0-72-generic posix x86_64

```

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<div class="post-metadata">

### Author: ![Joachim\_P](https://discourse.vtk.org/user_avatar/discourse.vtk.org/joachim_p/32/3272_2.png) [@Joachim\_P](https://discourse.vtk.org/u/Joachim_P)
#### Post date: [April 21, 2021, 3:48am UTC](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588/2 "2021-04-21T03:48:41Z")

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Interesting. What program are you running here? Do you get this black window with any VTK test program?

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<div class="post-metadata">

### Author: ![marcomusy](https://discourse.vtk.org/user_avatar/discourse.vtk.org/marcomusy/32/95_2.png) [@marcomusy](https://discourse.vtk.org/u/marcomusy)
#### Post date: [April 21, 2021, 10:12am UTC](https://discourse.vtk.org/t/vtk9-blank-rendering-window/5588/3 "2021-04-21T10:12:20Z")

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Yes, **all** examples give a blank screen in vtk9.0.1 (Ubuntu 20.04.2 LTS).  
Version vtk8.1.2 works fine.

Also paraview works ok, but i’m not sure what vtk is it based upon.

```auto
 > /usr/bin/paraview --version
Invalid MIT-MAGIC-COOKIE-1 keyparaview version 5.7.0

```