On Tuesday 01 December 2015 03:53:18 Sarah Armstrong wrote:

> just a reply on progress ,
> i am getting to the point of running and it looks as if the latency is
> so high , i cant even start linuxcnc

That is often a trademark sign that the video card is an NVidia, and that 
you are using the NVidia driver, which ties up the IRQ for as long as 
100 milliseconds at a time and makes the machine worthless for LCNC 
purposes.  Using the vesa driver, which limits the resolution, might 
work and would confirm my SWAG* about the video card holding you for 
ransom

While I have one in this box, I'm only running the sim here, and using 
the nouveau driver which although the graphics are gaming speeds, plays 
movie and news story's off the net well.  But the sim still reports 
servo-thread times above a millisecond in the terminal its launched 
from.  Not enough to affect the sim, but this old Asus M2N-SLI Deluxe 
couldn't get past a latency test on a bet, its just not suitable for the 
real thing.  Good board otherwise or I would have binned it long ago.

> i'm also having problems with the graphics card not wishing to work in
> graphics mode , only in software , so giving an even higher cpu load
> this is on an amd64 ( using i386 os ) motherboard that up to now has
> ran Linuxcnc for the last 3 years .

I run my older machines, a 7x12 lathe (ball screws and steppers) and the 
small HF toy mill (ball screws, bigger tables and steppers) on atom 
boxes, the toy mill still using software stepping but a 5i25 card would 
speed up its rapids, currently limited by a 27 u-s base thread, and only 
a 28 volt supply for the steppers.

My newer mill I've been talking about, a grizzly G0704 has higher voltage 
and is currently being run by an off-lease Dell 745.  With a 5i25, its 
on-board graphics are more than adequate for the job.  These are 
available locally with 4Gb of ram, sans HD so he gets to keep the 
winderz license, at $140.  A small commodity HD, a 5i25  card, and its 
all set.

Those D-525-MW atom boards that were nearly ideal for an economical 
software step setup, have been discontinued for about 3 years, and the 
last one I saw on ebay was selling for 4x the boxed OEM price.  So this 
Dell 745 setup looks quite attractive in comparison.

I might pay to visit your local computer guy and see whats there as there 
were a kajillion of those Dells sold to businesses that replace them as 
they are amortized on the p & l tax forms.  No PATA sockets on these 
mobo's though, all SATA. A floppy and a DVD r/w seem to be std 
equipment.  So a LCNC install is a 20 minute or less job.

Good luck Sarah.

*SWAG = Scientific Wild A$$ed Guess. ;-)

> so at the moment more progress is required before i can give any
> results .
>
> On 30 November 2015 at 23:35, Sebastian Kuzminsky <[email protected]> 
wrote:
> > On 11/30/15 3:33 PM, Alec Ari wrote:
> > > Which IPIPE revision is this? There are a few key difference
> > > between IPIPE releases and it'd be a smart idea to somehow
> > > integrate the IPIPE kernel release into the deb package version or
> > > release notes somewhere. That way people don't need to go to
> > > /usr/src/rtai-kern-source/arch/x86/include/asm/ipipe.h and grep
> > > for IPIPE_CORE_RELEASE
> >
> > Good idea, i'll add that to the package Description.
> >
> > The the linux-image-3.16.0-9-rtai-686-pae kernel (version
> > "5linuxcnc") uses the hal-linux-3.16.7-x86-5.patch from rtai
> > Vulcano, which is based on IPIPE_CORE_RELEASE 5.
> >
> >
> > --
> > Sebastian Kuzminsky
> >
> >
> > --------------------------------------------------------------------
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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>

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