Hi.
I am using the JLinkRTTViewer in Ubuntu 19.10.
Part of the text in messages is displayed in black on a black background. If double-click on this text, you can see that it is there (the text is highlighted in blue on the picture)
At the same time, if I use a virtual machine with windows 10, then everything is displayed without problems. The same firmware, the same J-Link.
I attach screenshots of the JLinkRTTViewer from Ubuntu, and from Windows (here you can see that the lines end with numbers)
JLinkRTTLogger (ubuntu), save data without any problem.
What could be the problem?
![](https://forum.segger.com/index.php/Attachment/3754-JLinkRTT-ubuntu-png/?s=5420dc558d7da09295381ddd576b3974e8e87fd0)
I am using the JLinkRTTViewer in Ubuntu 19.10.
Part of the text in messages is displayed in black on a black background. If double-click on this text, you can see that it is there (the text is highlighted in blue on the picture)
At the same time, if I use a virtual machine with windows 10, then everything is displayed without problems. The same firmware, the same J-Link.
I attach screenshots of the JLinkRTTViewer from Ubuntu, and from Windows (here you can see that the lines end with numbers)
JLinkRTTLogger (ubuntu), save data without any problem.
What could be the problem?