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@CNC_Andi:"Debian GNU/Linux 12 (bookworm)"...
Latency testing loop started Mon Dec 11 01:13:08 PM CET 2023,
should end after Mon Dec 11 03:13:08 PM CET 2023
Manual termination requested at 11.12.2023 13:23:52
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Hello, I have tested these kernel parameters, and I have managed to lower the latency to a stable 12k, but I have the problem that the screen resolution remains at 1028x768 instead of 1920x1080. I have removed the "nomodeset" and the resolution is set to 1920x1080 but the latency skyrockets.That's pretty high indeed, did you try to disable as many as possible energy saving settings in the bios? Adding kernel parameters?
Perhaps there is a bad ram chip, you could try to remove 2 of them, 32gb is a lot for LinuxCNC, 4gb is enough most of the times. To keep dual channel, you probably need to have one in slot 1 and 3.
The kernel parameters that worked for my machine and you could try:
isolcpus=3 intel_pstate=disable processor.max_cstate=0 idle=poll cpufreq.default_governor=performance i915.enable_dc=0 ahci.mobile_lpm_policy=1 irqaffinity=0 nomodeset quiet
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