On Tuesday 04 February 2003 9:41 pm, Donald Spoon wrote: > Dave Selby wrote: > > On Tuesday 04 February 2003 8:47 pm, you wrote: > >>Thus spake Dave Selby ([EMAIL PROTECTED]): > >>>Hi, Ive started using escputil to check and clean my print heads, it > >>>works great but I also need to check the ink level, apparently I need to > >>>access the printer directly by defining the rew device, ie, > >>> > >>>escputil --ink-level --raw-device /dev/??? > >>> > >>>My printer is an epson stylus C60, using the parellel port. > >>>As a guess I tried par0 > >> > >>The linux equivalent of LPT0 is /dev/lp0 > > > > Many thanks, looked real promising with great hope I re-tryed it but lp0 > > gives ... > > > > test@debian:~$ su > > Password: > > debian:/home/test# escputil -r /dev/lp0 -i > > Escputil version 4.2.0, Copyright (C) 2000-2001 Robert Krawitz > > Escputil comes with ABSOLUTELY NO WARRANTY; for details type 'escputil > > -l' This is free software, and you are welcome to redistribute it > > under certain conditions; type 'escputil -l' for details. > > > > Cannot read from /dev/lp0: Invalid argument > > debian:/home/test# > > > > So looks like I have another problem apart from using the wrong /dev/ > > !!!! Dave > > Make sure all your hardware ports and connectors are rated for > IEEE-1284. This spec is needed for 2-way communications between the > printer and computer via the parallel port. The most common mistake is > not using an IEEE-1284 rated connecting cable. The "standard" cable > only provides 1-way comm from the computer to the printer in general > terms. This shouldn't be a problem with recent computer ports or > recently manufactured printers. You can easily still purchase a > "standard" cable. > > Cheers, > -Don Spoon-
Hi mate, Under windows 98, yuk !!, the pucker epson driver gets the info on ink levels etc AOK, so I guess the cable is AOK The computer is 3 yr old, ie obsolete !!, the printer 1 year old. ls -al /dev/lp0 gives debian:/home/test# ls -al /dev/lp0 crw-rw---- 1 root lp 6, 0 Mar 14 2002 /dev/lp0 debian:/home/test# So read/write access is OK for root, even though the reported error is cannot read from /dev/lp0 My pet theory is the epson, being a new design, uses different from what escputil is looking for Dave -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
