[Linux-disciples] slow printing with hp842c

Adam Rosi-Kessel adam at rosi-kessel.org
Sun Oct 30 20:06:11 EST 2005


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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> 
> 
> 
> 
> 
> -- 
> Grace and Peace,
> Karl Sokol
> 
> We've heard that a million monkeys at a million keyboards
> could produce the complete works of Shakespeare;
> now, thanks to the Internet, we know that is not true.
>   - Robert Wilensky
> 
> 
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