PPD or backend?

[Erik de Castro Lopo]

> On Oct 13, 2010, at 2:23 PM, Erik de Castro Lopo wrote:
> > ...
> > So, my question is, can a printer that only requires a PPD file
> > give me feedback like presence, paper status etc or do I need
> > to write a CUPS backend driver to get those features.
>
> So the short answer is that it can.
>
> However, on Linux the current USB backend does not provide back-channel
> data,

Any idea on what it would take to fix the current USB backend
for Linux? To me, it seems that it would be smarter to fix all
the USB backends in one go than doing N printer specific
backends.

Cheers,
Erik