Greetings all; About 90 days back there were some new kernels and libraries made available that I've heard sped up the video on the pi's quite a bit.
But I have the stuff wrapped around the realtime kernel its running pinned so as not to lose the ability to run my lathe. That file is here: pi@picnc:/etc/apt/preferences.d $ cat kernel.pref Package:linux-kernel pin: version 4.4.4-rt9-v7+ Pin-Priority: 1001 Package: linux-headers Pin: version 4.4.4-rt9-v7+ Pin-Priority: 1001 Package: raspberrypi-bootloader Pin: version 1.20170427-1 Pin-Priority: 1001 Package: raspberrypi-kernel Pin: version 1.20170427-1 Pin-Priority: 1001 But while they been pinned, apparently the video has been updated and the older signal paths between the keyboard/mouse, and feedback to the video have been destroyed to the extent that my sheldon is now no longer usable. There is now at least a 1 second delay for any keyboard or mouse event to get to linuxcnc from my fingers, and at least a 1 second delay between lcnc's movements of the machine, and any update making it back to the backplot. An because the machine isn't under the usual tight control I've now destroyed 2 of the very expensive, smallest 3 cornered threading chips for making external threads. So I need a freshly built and installable realtime kernel that is compatible with the latest libraspberripi.bin and friends, or I'm going to have to find a D-525-MW mobo and reconvert it to a 7i90 with a parport interface since theres no such thing as an spi driver for the x86 boards. Given the rpi communities attitude vis-a-vis machine controls, (we are being ignored on their many lists and forums, the rare exception being the linux-arm list) it looks like going back to an intel driven system is the only choice I really have if I want a useable lathe again. My biggest problem is where the heck am I going to put a D-525-MW mobo in the hacked up mess hanging on the riser pole on the back of the machine now. I have several later rt kernels built, right there on the pi, but so far, despite repeated pleas for instructions on how to install them, nothing has been offered, and I'm now convinced after 2 years, that the pi folks would just as soon I took the blue pill and went away. I wish there were a thousand of me beating on the drums for support, but one voice is swept away in the multimedia wind. So is there a chance of a new kernel, realtime enough to work with linuxcnc AND take advantage of the new video modes made available in the last 5 or 6 months which might materialize by the 1st of May, or do I put a intel mobo on it and install from the wheezy install iso? Does that involve the wholesale replacement of $200+ worth of 7i90HD+ 3x 7i42TA's with something else? That, once the noise was whupped, has Just Worked. I think the question then is, is the intel parport fast enough to service the 7i90HD over that interface? I know that manpower to support one user of this architecture is not efficient use of your time so if I have to rebuild, I won't be hugely upset as this is the real world, but while it worked, it worked quite well. So what say you folks? Like Douglas Adams, Thanks for the fish. 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> _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
