--- texmaker.cpp.orig	2021-08-14 10:59:31.084359247 -0400
+++ texmaker.cpp	2021-08-14 11:01:06.030573621 -0400
@@ -5234,28 +5234,10 @@
 metapost_command=config->value("Tools/Metapost","mpost --interaction nonstopmode ").toString();
 // xdvi %.dvi  -sourceposition @:%.tex
 // kdvi "file:%.dvi#src:@ %.tex"
-switch (desktop_env)
-	{
-	case 1:
-		{
-		viewdvi_command=config->value("Tools/Dvi","evince %.dvi").toString();
-		viewps_command=config->value("Tools/Ps","evince %.ps").toString();
-		viewpdf_command=config->value("Tools/Pdf","evince %.pdf").toString();
-		}break;
-	case 2:
-		{
-		viewdvi_command=config->value("Tools/Dvi","kdvi %.dvi").toString();
-		viewps_command=config->value("Tools/Ps","kghostview %.ps").toString();
-		viewpdf_command=config->value("Tools/Pdf","kpdf %.pdf").toString();
-		}break;
-	case 3:
-		{
-		viewdvi_command=config->value("Tools/Dvi","okular %.dvi").toString();
-		viewps_command=config->value("Tools/Ps","okular %.ps").toString();
-		viewpdf_command=config->value("Tools/Pdf","okular %.pdf").toString();
-		}break;
-	}
 
+viewdvi_command=config->value("Tools/Dvi","xdg-open %.dvi").toString();
+viewps_command=config->value("Tools/Ps","xdg-open %.ps").toString();
+viewpdf_command=config->value("Tools/Pdf","xdg-open %.pdf").toString();
 
 
 ghostscript_command=config->value("Tools/Ghostscript","gs").toString();