Thanks for bugreport
Please, verify: in last version of LibreOffice problem remains?
If available, try on another OS and tell result
On the same computer, but from another program, duplex works?
May be related: Bug 33639 - doesn't remember duplex settings Bug 42926 - Duplex options are ignored Bug 45630 - : Printer Driver Options do not Work with LO Documents (Duplex, Pages per Sheet) Bug 32841 - Printing multiple copies outputs full duplex Bug 35096 - Bug: printing sides + multiples pages per sheet Bug 43932 - PRINTING: Paper tray setting not accepted from "File -> Print..."
Thanks for bugreport
Please, verify: in last version of LibreOffice problem remains?
If available, try on another OS and tell result
On the same computer, but from another program, duplex works?
May be related:
Bug 33639 - doesn't remember duplex settings
Bug 42926 - Duplex options are ignored
Bug 45630 - : Printer Driver Options do not Work with LO Documents (Duplex, Pages per Sheet)
Bug 32841 - Printing multiple copies outputs full duplex
Bug 35096 - Bug: printing sides + multiples pages per sheet
Bug 43932 - PRINTING: Paper tray setting not accepted from "File -> Print..."