Greetings all; running an iso from linuxcnc.org based on stretch. s/b all upto date.
from uname -a Linux coyote 4.9.0-9-rt-amd64 #1 SMP PREEMPT RT Debian 4.9.168-1+deb9u5 (2019-08-11) x86_64 GNU/Linux I just rebooted a couple times, basicly looking for the correct /dev/ttyUSB# to assign to heyu that would be the correct one to connect it to the cm11a. udev seems to enjoy confusing that port. But the first reboot had a stanza in dmesg fussing about IOMMU being disabled in the bios. So I rebooted again and poked around in the bios without finding any reference to IOMMU. I don't believe I actually changed anything. But I saved and rebooted anyway. Now the IOMMU related msgs are gone, but this remains in dmesg: 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Pm1aEventBlock: 32/8 (20160831/tbfadt-603) [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Pm1aControlBlock: 16/8 (20160831/tbfadt-603) [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/PmTimerBlock: 32/8 (20160831/tbfadt-603) [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe0Block: 64/8 (20160831/tbfadt-603) [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Gpe1Block: 128/8 (20160831/tbfadt-603) [ 0.000000] ACPI BIOS Warning (bug): Invalid length for FADT/Pm1aEventBlock: 8, using default 32 (20160831/tbfadt-708) [ 0.000000] ACPI BIOS Warning (bug): Invalid length for FADT/Pm1aControlBlock: 8, using default 16 (20160831/tbfadt-708) [ 0.000000] ACPI BIOS Warning (bug): Invalid length for FADT/PmTimerBlock: 8, using default 32 (20160831/tbfadt-708) Which I don't recall seeing in the previous decade of running this mobo/cpu combo. Whose bug might this be, or is my cmos battery about to ~30~ on me? 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>