What PS driver to use with cups-pdf?

cups-pdf has known issue that text can not be searched or copied from generated PDF files. I think that using proper PS driver should solve issue. I think that because I noticed that cups-pdf can print proper PDF file if proper ps file is printed. I executed following test. I created cups-pdf printer lpadmin -p p1 -v cups-pdf:/p1 -E -P /usr/share/ppd/cups-pdf/CUPS-PDF_opt.ppd There is testPage.txt text file. I have converted it to ps files in three ways. enscript testPage.txt -o testPage_enscript.ps a2ps testPage.txt -o testPage_a2ps.ps lpadmin -p ps -v file:///cups/prints/testPage_psprinter.ps -E -m drv:///sample.drv/generic.ppd lp -d ps testPage.txt I printed all 3 ps files on cups-pdf printer. lp -d p1 testPage_enscript.ps lp -d p1 testPage_a2ps.ps lp -d p1 testPage_psprinter.ps testPage_enscript.ps and testPage_a2ps.ps were printed correctly, text is searchable and can be copied. Only testPage_psprinter.ps was printed to invalid PDF file, text is not searchable and can not be copied. As I understand cups-pdf is a PostScript printer. Any client that prints something on printer uses printer driver. In cups-pdf case driver coverts any document to postscript and next cups-pdf converts postscript to PDF. Am I right? It seems that the key to solving the problem is using the right PS driver. I have checked following drivers without success. 1. Generic PostScript Level 1 Printer Foomatic/Postscript1 (recommended) (color, 2-sided printing) 2. Generic PostScript Printer Foomatic/Postscript (recommended) (color, 2-sided printing) 3. HP LaserJet 9000 Series Postscript (recommended) (grayscale) Is there any PS driver that works properly with cups-pdf?