I use LibreOffice software when preparing Gift Aid claim for HMRC. When completed, I would like to keep a hard copy but when I instruct the printer, it insists on printing portrait which is of no use. In response to a couple of queries I have received, I use Windows 10 and HP Deskjet 2632 Printer. I highlighted the cells and changed Automatic to Landscape which appeared in the preview but subsequently printed in Portrait mode. Libre Office Version 7.0. I cannot attach a copy of the file since this contains confidential financial information.
Did you select Landscape or Automatic in the Print Dialog?
Try downloading and running the HP Scan and Print Doctor from HP website.
If that doesn’t help then follow the steps for removing and re-installing driver on this HP forum question