Touch Screen Recommendations

More
04 Jan 2017 09:51 #85187 by PCW
You must set the "Fully Preemptable Kernel" option

This may not solve your latency issues buts its necessary to build a real time kernel

In my experience, isolcpus typically makes things worse with Preempt-RT
More
04 Jan 2017 10:50 #85189 by perra_e
Yes, I have spent a couple of hours on google now and I understand that it is the "Fully Preemptable Kernel" that shall be used.
I think I will start from scrach with a new Mint 17.3 installation again and take one of the newer RT kernals.
I just found out that a friend of mine has used 4.6.7 and it works fine for him on a Supermicro board with J1900 cpu.
More
04 Jan 2017 20:09 #85250 by perra_e
Now, finally getting close to something that can work.
Installed LMDE (Linux Mint Debian Edition) from scratch today after work and compiled the latest RT Kernal 4.8.9
With default settings in xconfig, just set "Fully Preemptable Kernel" I now have 96 000/118 000 in latency.
I hope it shall be possible to tweek the kernal and lower the latency a bit.
Touchscreen works :)
More
04 Jan 2017 21:41 #85256 by rodw

perra_e wrote: Now, finally getting close to something that can work.
Installed LMDE (Linux Mint Debian Edition) from scratch today after work and compiled the latest RT Kernal 4.8.9
With default settings in xconfig, just set "Fully Preemptable Kernel" I now have 96 000/118 000 in latency.
I hope it shall be possible to tweek the kernal and lower the latency a bit.
Touchscreen works :)


If you are using a Mesa ethernet card, that level of latency is fine according to PCW.
Make sure the C1/C7 wait times are disabled in the BIOS and you''ll be good to go.
More
04 Jan 2017 23:06 #85262 by perra_e
Yes, I use Mesa. But I found a finale solution.
https://forum.linuxcnc.org/forum/9-installing-linuxcnc/30207-iso-install-of-linuxcnc-on-debian-8-mint-lmde-2
Now latency is down to 30 000/90 000 and I'm not using the base thread so I'm happy now :)
I will try this out on the mill tomorrow I hope.
Case closed.
Moderators: ArcEye
Time to create page: 0.161 seconds
Powered by Kunena Forum