[Linux-disciples] slow printing with hp842c

[Karl Sokol]

>Do you have /proc/ other things?

Yep.

nahash at ubuntu:~$ cd /proc/
Display all 108 possibilities? (y or n)


I read here
https://www.redhat.com/archives/redhat-list/2004-December/msg00279.html
that In RHELv2.1 (which I think is based on 7.3) there is no /proc/parport
but there is a /proc/sys/dev/parport when insmod parport and insmod
parport_pc are run.

but I don't see any likely config files.

nahash at ubuntu:/proc/sys/dev/parport$ ls
default parport0
nahash at ubuntu:/proc/sys/dev/parport$ cd /proc/sys/dev/parport/default/
nahash at ubuntu:/proc/sys/dev/parport/default$ ls
spintime timeslice
nahash at ubuntu:/proc/sys/dev/parport/default$ cd
/proc/sys/dev/parport/parport0/
nahash at ubuntu:/proc/sys/dev/parport/parport0$ ls
autoprobe autoprobe1 autoprobe3 devices irq spintime
autoprobe0 autoprobe2 base-addr dma modes
nahash at ubuntu:/proc/sys/dev/parport/parport0$ cd
/proc/sys/dev/parport/parport0/devices/
nahash at ubuntu:/proc/sys/dev/parport/parport0/devices$ ls
active lp
nahash at ubuntu:/proc/sys/dev/parport/parport0/devices$ cd
/proc/sys/dev/parport/parport0/devices/lp/
nahash at ubuntu:/proc/sys/dev/parport/parport0/devices/lp$ ls
timeslice




On 10/30/05, Adam Rosi-Kessel <adam at rosi-kessel.org> wrote:
>
> Hmm. No /proc/parport is not so good. Do you have /proc/ other things?
>
> Karl Sokol wrote:
> > I do not have a /proc/parport. Is that a problem?
> >
> >>From man tunelp, I read:
> >
> > "-i <IRQ>
> > specifies the IRQ to use for the parallel port in
> > question. If
> > this is set to something non-zero, -t and -c have no
> > effect. If
> > your port does not use interrupts, this option will make
> > print‐
> > ing stop. The command tunelp -i 0 restores non-interrupt
> > driven
> > (polling) action, and your printer should work again."
> >
> > Sounds great. But...
> >
> > nahash at ubuntu:/$ tunelp /dev/lp0 -i 0
> > tunelp: ioctl: Invalid argument
> > /dev/lp0 using IRQ 7
> > nahash at ubuntu:/$
> >
> > Others have the problem
> > http://www.linuxarkivet.se/mlists/suse-linux-e/0306/msg01023.html
> >
> http://www.mail-archive.com/linux-setup@senator-bedfellow.mit.edu/msg01559.html
> >
> > But noone seems to have the solution.
> >
> > Any other suggestions?
> > Thanks.
> >
> >
> > On 10/18/05, *Adam Rosi-Kessel* < adam at rosi-kessel.org
> > <mailto:adam at rosi-kessel.org>> wrote:
> >
> > Karl Sokol wrote:
> > > My printer works ok for the most part- except that it is extremely
> > > slow. From what I could find googling around, there is a timing issue
> > > peculiar to some hp models when the printer is in
> > 'interrupt-driven' mode.
> > >
> > > The solution that is regularly presented is to set the printer into
> > > 'poll' mode by...
> > >
> > > $ lptcontrol -p -d /dev/lpt0
> > >
> > > However, it seems like the program lptcontrol is a BSD program and not
> > > in the debian archive. Before I look for a source for lptcontrol or
> > > start fiddling with the kernel (which I would rather not do), is there
> > > an easy way to change the printer's mode?
> >
> > I have an unconfirmed suspicion that you might be able to change it
> > somewhere under /proc/parport/. Have you checked there?
> >
> > Also, there is a command tunelp that I think should be included in
> > standard
> > Linux installations that probably does the same thing as lptcontrol.
> >
>
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