Same problem of second page printing garbage with Samsung CLP-620ND using Samsung driver. This printer also has the problem of not printing landscape properly in LibreOffice until the printer device language is set to PostScript instead of PDF (Printer / Properties / Device / Printer language type -> PostScript (Level from driver))
The fix in comment 57 sorts out the second page being garbage (once you've switched the printer off and on again)
Same problem of second page printing garbage with Samsung CLP-620ND using Samsung driver. This printer also has the problem of not printing landscape properly in LibreOffice until the printer device language is set to PostScript instead of PDF (Printer / Properties / Device / Printer language type -> PostScript (Level from driver))
The fix in comment 57 sorts out the second page being garbage (once you've switched the printer off and on again)
lpadmin -p Samsung-Laser -R usb-unidir-default reattach- default= true
lpadmin -p Samsung-Laser -o usb-no-
This fix, as reported above, seems to last across reboots so no need to put it in a startup script.
Thank you so much for posting this fix, it was driving me crazy!
ATB, Peter