Fred Hall via freebsd-stable <freebsd-stable@freebsd.org> writes:
I have a ThinkPad X1 Carbon Gen 4 (20FCS0NB00) which has happily
run FreeBSD 11 and 12, but which can't boot 13.0-RC1 from
memstick or via freebsd-update. In both cases the boot process
locks up on the line "hwpstate_intel0: <Intel Speed Shift> on
cpu0"
If running freebsd-update, a work around is to add
hint.hwpstate_intel.0.disabled="1" in loader.conf. See the note
under the Eighth Generation (2020) in
https://wiki.freebsd.org/Laptops/Thinkpad_X1_Carbon
I was quite surprised to find the lack of support for
hwpstate_intel in 13 when it apparently worked under 11 and 12.
Does anyone know the status of hwpstate_intel on ThinkPads?
I’m running 13 -STABLE from 10 days ago on a Thinkpad Yoga 3rd
gen, and hwpstate_intel works fine, never had a problem.
mathiasp:~% sysctl dev.hwpstate_intel
dev.hwpstate_intel.7.epp: 15
dev.hwpstate_intel.7.%parent: cpu7
dev.hwpstate_intel.7.%pnpinfo:
dev.hwpstate_intel.7.%location:
dev.hwpstate_intel.7.%driver: hwpstate_intel
dev.hwpstate_intel.7.%desc: Intel Speed Shift
dev.hwpstate_intel.6.epp: 15
dev.hwpstate_intel.6.%parent: cpu6
dev.hwpstate_intel.6.%pnpinfo:
dev.hwpstate_intel.6.%location:
dev.hwpstate_intel.6.%driver: hwpstate_intel
dev.hwpstate_intel.6.%desc: Intel Speed Shift
[snip]
The gen3 is using
sudo dmesg|grep -i cpu
CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (1992.08-MHz
K8-class CPU)
[snip, snip]
mathiasp:~% uname -a
FreeBSD Danton 13.0-STABLE FreeBSD 13.0-STABLE #2
stable/13-n244845-f21c0366f53: Wed Mar 10 20:53:26 CET 2021
root@Danton:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
Cheers,
Mathias
Cheers,
Fred
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