> From [EMAIL PROTECTED] Thu Aug 3 17:19:18 2000
> Subject: LPRng: Can't get status over USB connection
> Date: Thu, 3 Aug 2000 18:11:10 -0500
> From: Benjamin Gilbert <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
>
> System:
> - Debian GNU/Linux 2.2; kernel 2.2.16 with USB backport patches
> - LPRng 3.6.20
> - ifhp 3.3.17
> - Lexmark Optra E312 on /dev/usb/lp0
>
> printcap:
> ===
> lexmark
> :lp=/dev/usb/lp0
> :if=/usr/local/lib/filters/ifhp -Tmodel=lexmark_optra_e312
> :sd=/var/spool/lpd/lexmark
> :cm=Lexmark Optra E312 (USB)
> :rw
> :sh
> ===
>
> If I set up LPRng to use ifhp as an input filter, ifhp fails to obtain
> sync from the printer.
>
> ===
> using model 'lexmark_optra_e312' at 21:42:51.623
> pagecount using 'pjl info pagecount' at 21:42:51.625
> setting up printer at 21:42:51.625
> getting sync using 'pjl echo' at 21:42:51.625
> [... and that's where it stops.]
> ===
The USB driver currently does not support full duplex operation
on the printing device. You need to do:
write some stuff;
read
write some stuff;
read
It also does not support select.
Patrick
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