Opening the dxf with
Add Vector layer and labelling with
text datafield gives almost the same as Autodesk Design Review:
The DXF file contains points and polygons in the same layer. This is not allowed in shapefiles. That is why you can not save it as a shapefile.
Exporting as kml will work, as this format supports different geometry types.
You have to set
NameField=Text in the
Data Source Field to preserve the text into the Name field for labelling.
You can export the data as lines shapefile, and ignore the error messages. In a second run, you can export the labelling points by adding
SHPT=POINTS in the
Layer field, ignoring again the error messages. Load both shapefiles into QGIS manually, label the point file with the
Text field, and set the point symbol to zero size.