HP's apparently all but useless Linux site suggests that their hplip drivers give you that capability. However, it also seems to expect that I will be running a GUI to use their tools.

My CP-1215 is attached to my server which doesn't have a GUI installed.

Previously I'd been using the open source CUPS driver, which seemed to work pretty well. However, I recently ran low on one colour of toner which messed up the printing. The toner-out lights on the printer never cam one, so replacing the toner cartridge was not the first thing I tried to fix it.

I've just installed the hplip / hp-plugin driver which also seems to be working. However, the CUPS web interface doesn't allow me to retrieve the toner status.

Has anyone had any luck retrieving the toner levels from an HP colour laserjet printer?

If HPLIP can see the printer, you might be able to retrieve that information with HPLIP.

I can retrieve the ink levels from my HP Officejet Pro L7680 over the network (it's directly on the network) by running the HPLIP toolbox: /usr/bin/hp-toolbox

While HP supports direct connections to the network, it doesn't support printers connected to another computer shared via CUPS. Hp-setup can't find the printer.

I can run hp-setup -i on the server and it finds the machine. However, Debian doesn't seem to install the hp-toolbox on either machine. Moreover, the package available from HP doesn't install on Debian/Squeeze because there is no cups-image package (which it believes it needs).

While HP supports direct connections to the network, it doesn't support printers connected to another computer shared via CUPS. Hp-setup can't find the printer.

I can run hp-setup -i on the server and it finds the machine. However, Debian doesn't seem to install the hp-toolbox on either machine. Moreover, the package available from HP doesn't install on Debian/Squeeze because there is no cups-image package (which it believes it needs).