Re: Free software

From	Gene Heskett <gheskett@shentel.net>
Newsgroups	linux.debian.user
Subject	Re: Free software
Date	2017-07-20 03:10 +0200
Message-ID	<u588x-8k2-3@gated-at.bofh.it> (permalink)
References	<u4kEO-1f3-31@gated-at.bofh.it> <u4OWd-3rS-15@gated-at.bofh.it> <u55u2-6uk-5@gated-at.bofh.it>
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On Wednesday 19 July 2017 18:16:16 Ric Moore wrote:

> On 07/19/2017 12:33 AM, Doug wrote:
> > All the wonderful Linux programmers
> > have had YEARS to modify it and make it better than what
> > Nvidia provides, but it seems that they haven't succeeded.
> > I am very happy with my Nvidia cards and Nvidia drivers.
> > What the devil is everybody bitching about?
> >
> > And, of course, doesn't it make sense that the company that
> > invented and produces and sells a product ought to know more
> > about how to operate it than a bunch of "de-engineers?"
>
> Amen. I paid large dollars for my dual nVidia card setup driving four
> monitors quite nicely with the nVidia supplied driver. And, over the
> many years, read nothing but complaints about AMD/Intel video which
> has provided many a evil chuckle. I agree, it comes down to if owners
> of nVidia products are complaining and everyone else minding their own
> business. More than likely the ONLY reason nvidia pays Linux users any
> attention at all is for NASA contracts. If I were them, I'd tell us to
> go to hell. Ric

The NVidia drivers have a huge problem if they are asked to co-exist with 
any system that depends on real time IRQ response.  This generally 
included computers used for machine control. When a major screen redraw 
is needed, its not uncommon for the NVidia driver to lock the machines 
resources up for 400 milliseconds.  If at the time this occurs, the 
machine is 3 milliseconds from turning a corner, which if it doesn't 
turn, will put the cutting tool in heavy contact with the part, wrecking 
the part and likely breaking the tool, with a potential cost of $40 to 
$400 for the tool, and several hundred more for the wrecked part, which 
has to be started from scratch with a new piece of metal.

The nouveau driver doesn't do the extended machine hogging and there may 
be times when the backplotted video might be half a second behind the 
machine because of that, but linuxcnc itself knows exactly where the 
machine is millisecond by millisecond. And the machine does precisely 
what I wrote the code to tell it do do.

So we don't badmouth the nvidia cards, but we've zero use for the nvidia 
drivers. I have nvidia video in 3 of my 4 metal carving machines, and 
the nouveau driver runs all 3 quite satisfactorily. With down right 
boring power fail to power fail stability.

The 4th machine is a 3/4 ton Sheldon lathe thats nearly 70 years old. But 
with only 2 axis's to track, an r-pi 3b is getting the job done quite 
nicely.  The r-pi's video sucks dead toads thru soda straws, so I am 
looking at a rock64 board with 4Gb of dram, no USB-2 data pipeline 
bottleneck and dual mali gfx processors but its not shipping till the 
first of the month & I'll give it a couple months to sort out the infant 
mortality problems new boards always have. That, and getting a stretch 
built with an RT-Preempt kernal.  Stretch will finally ship with a 
working gtk3 editor so we can make some even prettier gfx for linuxcnc.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

Thread

video driver? "D. R. Evans" <doc.evans@gmail.com> - 2017-07-17 22:20 +0200
  Re: video driver? Felix Miata <mrmazda@earthlink.net> - 2017-07-17 22:40 +0200
  Re: video driver? Sven Joachim <svenjoac@gmx.de> - 2017-07-17 22:50 +0200
  Re: video driver? Teemu Likonen <tlikonen@iki.fi> - 2017-07-17 23:10 +0200
    Re: video driver? Doug <dmcgarrett@optonline.net> - 2017-07-18 05:40 +0200
      Re: video driver? Brad Rogers <brad@fineby.me.uk> - 2017-07-18 07:50 +0200
        Re: video driver? RavenLX <ravenlx@sitesplace.net> - 2017-07-18 13:00 +0200
          Re: video driver? Brad Rogers <brad@fineby.me.uk> - 2017-07-18 14:20 +0200
            Re: video driver? <tomas@tuxteam.de> - 2017-07-18 15:50 +0200
          Re: video driver? Doug <dmcgarrett@optonline.net> - 2017-07-18 20:30 +0200
            Free software (was: video driver?) Teemu Likonen <tlikonen@iki.fi> - 2017-07-18 21:00 +0200
              Re: Free software Ben Finney <bignose@debian.org> - 2017-07-19 02:20 +0200
                Re: Free software Ben Finney <bignose@debian.org> - 2017-07-19 02:50 +0200
                Re: Free software Doug <dmcgarrett@optonline.net> - 2017-07-19 03:30 +0200
                Re: Free software Doug <dmcgarrett@optonline.net> - 2017-07-19 02:50 +0200
                Re: Free software Felix Miata <mrmazda@earthlink.net> - 2017-07-19 03:40 +0200
                Re: Free software rhkramer@gmail.com - 2017-07-19 14:10 +0200
                Re: Free software Ric Moore <wayward4now@gmail.com> - 2017-07-20 00:10 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-19 06:00 +0200
                Re: Free software Doug <dmcgarrett@optonline.net> - 2017-07-19 06:40 +0200
                Re: Free software <tomas@tuxteam.de> - 2017-07-19 10:40 +0200
                Re: Free software Fungi4All <fungilife@protonmail.com> - 2017-07-19 10:50 +0200
                Re: Free software Joel Rees <joel.rees@gmail.com> - 2017-07-20 00:50 +0200
                Re: Free software Doug <dmcgarrett@optonline.net> - 2017-07-20 01:10 +0200
                Re: Free software Joel Rees <joel.rees@gmail.com> - 2017-07-20 02:00 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-20 03:30 +0200
                Re: Free software rhkramer@gmail.com - 2017-07-20 13:40 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-20 15:00 +0200
                Re: Free software David Wright <deblis@lionunicorn.co.uk> - 2017-07-20 22:50 +0200
                Re: Free software Doug <dmcgarrett@optonline.net> - 2017-07-20 20:50 +0200
                Re: Free software Joel Rees <joel.rees@gmail.com> - 2017-07-21 02:30 +0200
                Re: Free software Ric Moore <wayward4now@gmail.com> - 2017-07-20 00:20 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-20 03:10 +0200
                Re: Free software Ric Moore <wayward4now@gmail.com> - 2017-07-22 04:00 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-22 05:50 +0200
                Re: Free software Ric Moore <wayward4now@gmail.com> - 2017-07-22 07:10 +0200
                Re: Free software rhkramer@gmail.com - 2017-07-22 13:30 +0200
                Re: Free software Joe <joe@jretrading.com> - 2017-07-22 14:50 +0200
                Re: Free software Gene Heskett <gheskett@shentel.net> - 2017-07-22 17:00 +0200
                Re: Free software Nicolas George <george@nsup.org> - 2017-07-20 13:40 +0200
            Re: video driver? Brad Rogers <brad@fineby.me.uk> - 2017-07-18 21:20 +0200
            Re: video driver? <tomas@tuxteam.de> - 2017-07-18 21:30 +0200
              Re: video driver? Fungi4All <fungilife@protonmail.com> - 2017-07-18 22:10 +0200
                Re: video driver? "tomas@tuxteam.de" <tomas@tuxteam.de> - 2017-07-18 22:30 +0200
                Re: video driver? Brian <ad44@cityscape.co.uk> - 2017-07-19 02:20 +0200
              Re: video driver? Brian <ad44@cityscape.co.uk> - 2017-07-19 02:00 +0200
            Re: video driver? Dan Ritter <dsr@randomstring.org> - 2017-07-18 21:40 +0200

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