# Visible cell selection - HardwareSelector.py example is not working reliably

**URL:** https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262
**Category:** Support
**Created:** [July 3, 2019, 3:01pm UTC](https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262 "2019-07-03T15:01:47Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![lassoan](https://discourse.vtk.org/user_avatar/discourse.vtk.org/lassoan/32/50_2.png) [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [July 3, 2019, 4:23pm UTC](https://discourse.vtk.org/t/visible-cell-selection-hardwareselector-py-example-is-not-working-reliably/1262/4 "2019-07-03T16:23:37Z")

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We had the issue of [starting up with black window until interaction](https://discourse.vtk.org/t/problem-in-vtk-8-2-with-defaultformat-and-qvtkopenglwidget-on-windows-10-intel/998/25) when used Intel graphics card on Windows with OpenGL core profile instead of OpenGL compatibility profile. It may or may not be the same issue as this. Try it on an nVidia graphics card or [try to create the rendering context using compatibility profile](https://discourse.vtk.org/t/problem-with-view-update-since-intel-uhd-graphics-620-driver-update/1224/4) to see if the problems look similar.

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