|Summary:||hw.acpi.cpu.cx_lowest restricted to C1 on Bay Trail-M N2930 Jetway motherboards|
|Component:||kern||Assignee:||freebsd-bugs (Nobody) <bugs>|
|Status:||Closed Works As Intended|
|Severity:||Affects Some People|
Description 89zjvobu 2014-11-10 02:49:13 UTC
Created attachment 149236 [details] dmesg of boot -v, acpi and sysctl dump After booting hw.acpi.cpu.cx_lowest is C1 and C2/C3 can not be enabled (tried all sorts of things). I became aware of the problem because of the high power usage/temperatures compare to other distributions. So whatever I do, in the end I get: dev.cpu.0.cx_supported: C1/1/1 C2/2/500 C3/3/5000 dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 384us powerd -v seems to work: powerd: unable to determine AC line status load 38%, current freq 62 MHz (18), wanted freq 62 MHz load 21%, current freq 62 MHz (18), wanted freq 62 MHz ... This is from an FreeBSD-10.1-RC4-amd64-memstick r273874 installed on a new dual-lan N2930 Bay Trail-M system from jetway (HBJC311U93-2930-B, HBJC311U93W-2930-B, BIOS A01, and other systems based on the NU93-F motherboard). Beside: States works fine with ipfire based on Linux Kernel 3.10 Attached find the boot-v dmesg, acpidump and sysctl -a output.