On Wednesday 24 April 2019 03:42:00 andy pugh wrote:

> On Wed, 24 Apr 2019 at 01:30, Gene Heskett <ghesk...@shentel.net> 
wrote:
> > Several, your personal config probably makes a far bigger difference
> > than the actual version number of the kernel since you have to be
> > pretty well up on YOUR hardware to re-configure the kernel you are
> > about to build.

> And there is the problem. I have never yet managed to get that step
> right and make a version that works on my PC.
> (I tried and failed with the NTULinux repo last night)

URL?

> And the problem to be solved here is building a kernel that can ship
> with LinuxCNC and work with _any_ kernel.
>
> Is it, in fact, currently impossible to provide an RTAI LinuxCNC ISO
> with any kernel newer that the one we ship with Wheezy?

IDK Andy. Has the current rtai kernel been tried on stretch? Nah, its 32 
bit, claims PAE but is not. Stretch is 64 bit.

> If that is the case then perhaps it is time to abandon RTAI
> altogether?

Might be, I have only 1 preempt-rt versions running here, not on software 
stepping though, both on mesa cards, a 7i90HD+3 ea 7i42TA's running the 
Sheldon, and the 5i25/7i76D running the G0704. But I've not changed the 
kernel on the 6040, that machine WAS formerly softstepping the old HF 
micro so its still running the live iso's kernel. But I've no clue if 
software stepping would run on it. If I software step it, it would be  
buckets slower, 10 ipm or so rapids, where its doing 200 now.  And I'd 
have to share all my home switches for lack of i/o.

I hope at the end of the day, that we don't have to abandon software 
stepping as thats the lowest cost entry point. But for my uses, today 
I'd have to figure on at least a 5i25 as a driver card, and that 
unavoidably raises the entry bar for new users by what, 80 bucks?  A sad 
state of affairs.  Your call.
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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