On 11:40 Tue 16 Mar , Camaleón wrote: > I'm not a CUPS guru, but what I understand for a "backend" is a method > used to connect the printer, a kind of "virtual interface" that allows > the communication between your printer and CUPS. > > Mmmm, better "man backend" to get detailed info :-)
Cool!!! > > 1/ A backend connection method: a) local: usb, lpt b) remote/networked: > socket, ipp, samba c) virtual: fax, pdf, etc... this is the first step on the web page where it 'searchs' for possible printers and usually gives me 2 or 3 different copies of my hp printers. never understood that till now. > 2/ A driver (PostScript printers are just fine with PPD description files > but others need drivers to work) now i guess you are saying that the backends are failing me. > > I always avoid using "hplip" as backend and drivers on my HP laserjet > printers because I find PPD files a cleaner way to handle them. Hplip > adds many fancy options (toner and paper status) that I do not really > need (networked HP printers have their own embedded web server to see > detailed information on the printer). > > So, I would try with another backend (if "usb" is available in the wizard > when adding a new printer, or by direct input using "lpadmin"). i will look to see what comes up at work this morning and at Dad and Mom's tonight > > >> Have you tried with "usb" backend? Type "lpinfo -v" to see the > >> available backends for your system. Put here the output. > > > > Rashi:/home/mlaks# lpinfo -v > > network ipp > > network http > > network beh > > network lpd > > direct scsi > > direct hp:/par/HP_LaserJet_1200?device=/dev/parport0 direct hal > > network socket > > direct parallel:/dev/lp0 > > serial serial:/dev/ttyS0?baud=115200 > > network smb > > direct hpfax > > I see not "direct hal" :-? > what is direct hal? > > this is currently on the machine that I reverted to direct connection by > > parport parallel port. > > > > I will try to do it on the other machines tomorrow. > > So, if using parallel port it just works? Then that means the error comes > from the "hp" bakend :-? > > > /usr/lib/cups/backend/usb > > > > here is the output > > /usr/lib/cups/backend/usb > > DEBUG: list_devices_libusb > > DEBUG: usb_find_busses=5 > > DEBUG: usb_find_devices=6 > > > > > > (recall I switched on this machine to the parallel port for a while) > > Then the output seems normal as the printer cannot be detected on USB > port. > > >>lpq > > here is the output > > > > HP_LaserJet_1200 is ready > > no entries > > O.K. > > >> Also, the recommended driver for your printer is "pxlmono": > >> > >> http://www.openprinting.org/printer/HP/HP-LaserJet_1200 > > > > So why does cups on my machine say Postscript en ? > > Because you can select any available driver for your printer, that is, > you can use "pxlmono", "hplip" or "standard postscript". > > In fact, different drivers provide different quality and speed > printinting output so many people have several printers added using > different drivers in each of them (one hp 1200 printer instance with > "PostScript" driver, another hp 1200 instance with "hplip" driver and so > on...) :-) ???? Is hplip a backend or a driver??? so which is 'better' or 'faster' the postscript or pxlmono? I guess some for some stuff and some for others. Any discussion that you have found anywhere I notice that my printer is slow at times for printing pdfs.... Any references that you can share? > > Greetings, > > -- > Camaleón You are very helpful! Thank you for any more light you can share! Mitchell > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: http://lists.debian.org/pan.2010.03.16.11.40...@gmail.com > -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100316120621.ga20...@earthlink.net
