Printing quality cant be changed

[dino99]

Printer used: HP C4585 inkjet all-in-one

The problem here is:
- i cant select the quality for printing : its like color/high-quality-resolution is the only choice (others are not accepted)
       logged within gnome-shell, when i try:
              System Settings -> Printers -> Options -> Image Quality : only High-resolution-quality is accepted with Color (Options -> Color setting); everything else (normal/best/draft/grayscale) are not accepted when they are selected (get a warning icon at the end of the line setting).

- when i glance at dconf printing setting: the content-ppi is set by default to 600; but selecting 300 or 100 as a custom setting does not allow to print with black ink and normal/best or draft setting.

The very bad sad effect is the printer is using so much ink (way too much) and the ink cartridge is emptied very quickly.
Hope you set a high priority for that bug, as it needs a fix asap.

nb: im not sure about the package to report against. This installation is a genuine Trusty one. The 'cupsErrorLog' suggest it might be a Cups trouble.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: hplip 3.14.3-0ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu2
Architecture: i386
CurrentDesktop: GNOME
Date: Sat Apr 12 18:09:06 2014
InstallationDate: Installed on 2013-10-25 (169 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20131021.1)
Lpstat:
 device for PDF: cups-pdf:/
 device for Photosmart_C4500: hp:/usb/Photosmart_C4500_series?serial=CN87JD4109057K
Lsusb:
 Bus 001 Device 004: ID 03f0:6b11 Hewlett-Packard Photosmart C4500 series
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 002: ID 046d:c50e Logitech, Inc. Cordless Mouse Receiver
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: ASUSTEK COMPUTER INC P5W DH Deluxe
Papersize: a4
PpdFiles:
 PDF: Generic CUPS-PDF Printer
 Photosmart_C4500: HP Photosmart c4500 Series, hpcups 3.14.3
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=83f51130-24a6-4486-9284-f8d6700df293 ro
SourcePackage: hplip
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/22/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3002
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5W DH Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3002:bd07/22/2010:svnASUSTEKCOMPUTERINC:pnP5WDHDeluxe:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WDHDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: P5W DH Deluxe
dmi.product.version: System Version
dmi.sys.vendor: ASUSTEK COMPUTER INC