Remove the print queue for this printer in "system-config-printer"
Run hp-setup command and pick the PPD file "hp-designjet_t770ps_24in-ps.ppd.gz" from location
/usr/share/ppd/HP/hp-designjet_t770ps_24in-ps.ppd.gz (or) hplip-3.12.2/prnt/ps/hp-designjet_t770ps_24in-ps.ppd.gz
Post us the "hp-check -t" output and let us know if you are able to print using the this PPD file.
Regards, Goutam kodu
Remove the print queue for this printer in "system- config- printer"
Run hp-setup command and pick the PPD file "hp-designjet_ t770ps_ 24in-ps. ppd.gz" from location
/usr/share/ ppd/HP/ hp-designjet_ t770ps_ 24in-ps. ppd.gz (or) hplip-3. 12.2/prnt/ ps/hp-designjet _t770ps_ 24in-ps. ppd.gz
Post us the "hp-check -t" output and let us know if you are able to print using the this PPD file.
Regards,
Goutam kodu