rpi4 new rt kernel no mouse or keyboard, screen has border all around

I wonder what effect that extra length might have on Jon's src termination board? I think its a good idea, b ut I've already cut mine away. And since the startech heat padding is a LOT thinner than the stuff they furnish for heat conduction, I'm going to turn mine legs up and take about 20 off the bottoms of the legs in order to get better contact with the much thinner startech padding materiel. I should get that done today if my back doesn't peter out.

Neat idea, the extension headers. Never crossed my mind, whats left of it. The years are starting to slow me down, dammit.

Thanks Mike

To be honest. I probably would have done the same as you did. Maybe with more swearing... ... But I'm still a youngster with nearly 63. Hope to stay mentally fit like you.
Will wait a bit longer to go the Pi4 road and LCNC. With 7i76e. Or maybe buy just for fun a spi one.
Mike

I've already got 3, all somewhat damaged 7i90HD's, which are fairly cheap but I've also spent the sheckles for a triplet of the 7i42TA's, which make wiring it up a hell of a lot easier in addition to stopping the 7i90HD damage.

I can use any of them to prove its working with the new spi driver Since I have cat5 all over the place, all of it hiding from the net because theres a router running dd-wrt between all of me ad the net. That hackers don't even know I'm here.

I went out and used my cloned in plastic probe and measured the bottom of the sink and the top of the pi4, finding the heat sink padding I was able to find was about 1.5mm thinner than what came with the sink & which I royally screwed up while doing the machining, and yes the air had a blue tinge to it. No local winesses except me though.

So now I am in the middle of writing a leg trimmer, taking vanishingly thin cuts to take about 1.5mm off each sink leg. But I decided to retire to an office chair as my back is yelling at me because of the about 3 hours in front of the machine with a cheap reneshaw probe taking those measurements. Thats part of getting on, and it never gets better. Hopefully I'll have a bit more stamina when they've replaced my aortic valve, sometime around the 9th. This ones leaking pretty bad, 30% pumping efficiency.

Thanks Mike.

Reply not so quick, they've been working on me, new aortic valve, finally, and its working so good my blood pressure is too high.

Anyway I just got thru doing you recipe again, but this time all built insitu on the rpi4 as I now have a couple ssd's attached with sata to usb3 cables, works well, including ditching the swap file in favor of a 10g swap partition on the 120G ssd, and a 240G mounted as /media/pi/workspace, so I've golt lots of room to play.

The raw 4.19.y has been updated, so this build is up to 4.19.71-rt.

The most worrysome was your line to make bcm2711_defconfig, but I thought that was for rpi3b's.

But when I did that, I was amazed to have it report something was changed, and when I looked at the resultant .config with less, it was indeed changed, to bcm2835_yadda, which is I believe correct for an rpi4b.
I didn't change much in menuconfig, basicly turning off the radio, saved it and typed:

make zImage modules dtbs
A few mutters but built without any major fussing.

I had some reservations about the installation because the sd card it was running on is the only one I have that runs well. But I could recreate it in two or 3 hours, so I did the rest of it up to the sudo reboot -n.

I could ping it pretty quick but had to wait on the rng for a couple minutes before it accepted an ssh login. But once logged in, the latency was around 26 u-secs, 24 better than the kernel it had been running for a couple months while they poked cleaning rods into my groin going both ways as they also put some stents in my diabetic legs, which are improving very slowly.

Anyway, linuxcnc-master I built last week on this same rpi4 is running and looking normal. I should have a winner! Now I am waiting on warmer, quiet weather so I can drag my mig cart out and fix the mounting brackets on a hoist I bought to handle the BS-1 I bought for the mill, not realizing how heavy that puppy is. With the chuck and plates mounted, about 87 kg. And my back at my age just isn't up to that.

Anyway, thanks for the recipe, the results are looking tasty even if I've not moved a stepper just yet.