Docker with rqt problem with black dialog/menu/dropdown

asked 2018-10-01 17:08:11 -0500

fehlfarbe
108 ●5 ●9 ●14

updated 2018-10-18 07:32:53 -0500

Hi,

I created a docker container based on osrf/ros:kinetic-desktop-xenial which runs rqt via XServer ( http://wiki.ros.org/docker/Tutorials/... 1. The simple way). I also made my video card (Intel GPU) available via --device=/dev/dri:/dev/dri ( http://wiki.ros.org/docker/Tutorials/... ) which seems to work because rqt and RViz starts and I don't get OpenGL errors.

But sometimes rqt doesn't render the content of widgets like dialog boxes, menu entries and dropdown lists shows only a black window/widget. It happens on my own rqt plugin but also on the rqt main menu (for example the menu entries for Plugins->Visualization are just a black box). I have the same problem on different computers running Linux Mint 18.2 (Cinnamon) and Intel GPU.

Is this a known bug or is there something wrong with my configuration?

Edit:
The content of a QDialog gets visible when I resize the dialog.
Adding --env="QT_X11_NO_MITSHM=1" doesn't fix the problem.

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I came here with the same problem and QT_X11_NO_MITSHM=1 seems to solve the problem for me.

martinakos ( 2020-05-28 04:57:44 -0500 )edit

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answered 2018-10-10 18:02:24 -0500

ruffsl
1094 ●19 ●44 ●40

This sounds like a QT issue. Be sure to set the necessary environment variable to force QT to properly render the GUI regardelss of the X server configuration, e.g disabling QT use of MIT Shared Memory Extension:

http://wiki.ros.org/docker/Tutorials/...

--env="QT_X11_NO_MITSHM=1"