Am Montag, dem 30.03.2026 um 21:34 +0800 schrieb Luca Toniolo:
Nvidia is the reason, I can't boot with graphics on preempt-rt either
:-(
I doubt RTAI plays nice with Nvidia graphic cards...
I didn't really spend time trying to fix preempt, I just use 6.12 non
rt, I just need sim at home to test builds, it's just a gaming PC
repurposed to a development station, it's snappy, that's what I need,
I'm pretty sure the 3060 will not play nice with 5.4 kernel, with 6.1
kernel it did not wake up after sleep, very annoying, but I don't
want to pull the graphic card out, I have better suited hardware at
the office anyhow.
it may even be the other way round, that nvidia proprietary drivers
work better with RTAI than with RT-PREEMPT. With RTAI, the realtime
part is really running under it's own kernel in a sense, and doesn't
interfere with the rest of the system/kernel that much. It inercepts
interrupt requests very early, whereas rt preempt is really intrusive
AFAIU. So if you can get the driver shims to compile for a RTAI kernel
it might be worth a try.
It was definitely worth a try! it did boot with graphics to my
bewildered shocked face, did not have network RTL8125, Realtek other
sucker in good company with NVIDIA I guess, but I have a handy USB
Ethernet adapter, and I'm now fixing the RTAI build at home, on my
gaming PC, Linux never ceases to amaze me...
Did not have time today at the office to test RTAI, but now I can do it
before bed time at home, thank you Robert, That totally worked!
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