Schooner & Robert:

I'm running this 

Please bear with me here, but if I understand this right the image I 
downloaded and flashed (and have booted) has the 3.8 kernel. This kernel is 
not compatible with the wifi chip drivers, I need a 4.1 or later kernel? 
But what you're saying is that there's an experimental build that has a 
later (4.1+) kernel but there's a CPU load issue? You say it might not with 
with "rt requirements" I' assume you mean "real time requirements". So my 
guess is that I run the risk of locking up my machine if I try that image?

That command that you list: CONFIG_PREEMPT_RT_FULL -> CONFIG_PREEMPT_RTB 

What does it mean? I'm assuming it commands the OS to go from full real 
time to something that's buffered, or "preemted?"

Thanks for all of the help, and I apologize for being a bit of a newbie at 

On Wednesday, May 16, 2018 at 12:49:50 PM UTC-4, Robert Nelson wrote:
> On Wed, May 16, 2018 at 10:39 AM, Eric < <javascript:>> 
> wrote: 
> > I'm guessing that updating the kernel on the Machinekit image isn't as 
> > trivial as installing an app? (can you tell I'm new to Linux! :) 
> > 
> > Where would I find Robert Nelson? 
> The image with 3.8.13-xenomai, don't bother trying to update it to 
> 4.14.x-rt so you can get wifi working.. 
> Instead use a later stretch build: 
> Currently there's a high cpu load issue on v4.14.x, we think we 
> figured it out, but it involves switching from: 
> So it might not work with machinekit's rt requirements... 
> Regards, 
> -- 
> Robert Nelson 

website: blog: github:
You received this message because you are subscribed to the Google Groups 
"Machinekit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
Visit this group at
For more options, visit

Reply via email to