"Printer not connected" - but it is

[Roger Morgan]

> > I'm using Debian Etch. I can't print through CUPS. The status is "Printer not connected; will retry in 30 seconds...". CUPS correctly shows the device URI as usb:/dev/usb/lp0.
> >
> > But if I generate a gdi file with ghostscript, then su to root, I can do this:
> > cat file.gdi >/dev/usb/lp0
> > and it prints successfully.
[snip]
> I had this issue and it had to do with the permission on the port. try setting it so root:cups owns it with 660 permissions

/dev/usb/lp0 is owned by root:lp and the permissions are:

rm at Leo:~$ ls -lrt /dev/usb | grep lp0
crw-rw---- 1 root lp    180,  0 Mar 14  2002 lp0

Note that in Debian Etch, cupsd runs as root (some of the filters run as lp).