Bug 425812
Summary: | C3 state only available if machine boots off battery | ||||||||||
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Product: | [Fedora] Fedora | Reporter: | Bradley <bbaetz> | ||||||||
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||||||
Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||||
Severity: | low | Docs Contact: | |||||||||
Priority: | low | ||||||||||
Version: | 8 | CC: | acpi-bugzilla | ||||||||
Target Milestone: | --- | ||||||||||
Target Release: | --- | ||||||||||
Hardware: | x86_64 | ||||||||||
OS: | Linux | ||||||||||
Whiteboard: | |||||||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||||||
Doc Text: | Story Points: | --- | |||||||||
Clone Of: | Environment: | ||||||||||
Last Closed: | 2008-04-10 08:00:33 UTC | Type: | --- | ||||||||
Regression: | --- | Mount Type: | --- | ||||||||
Documentation: | --- | CRM: | |||||||||
Verified Versions: | Category: | --- | |||||||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||
Cloudforms Team: | --- | Target Upstream Version: | |||||||||
Embargoed: | |||||||||||
Bug Depends On: | |||||||||||
Bug Blocks: | 165150 | ||||||||||
Attachments: |
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Description
Bradley
2007-12-16 06:45:46 UTC
Created attachment 289712 [details]
acpidump
Created attachment 289713 [details]
CPU0 _CST (binary format)
Created attachment 289714 [details]
CPU1 _CST
This is a dual core T7100, so CPU1 is really the second core of CPU0
When booting on battery, /proc/acpi/processor/CPU0/power is: active state: C0 max_cstate: C8 bus master activity: 00000000 maximum allowed latency: 2000 usec states: C1: type[C1] promotion[--] demotion[--] latency[001] usage[00000183] duration[00000000000000000000] C2: type[C2] promotion[--] demotion[--] latency[001] usage[00009437] duration[00000000000008537003] C3: type[C3] promotion[--] demotion[--] latency[057] usage[00046654] duration[00000000000323653138] Still happens, with kernel-2.6.23.15-137.fc8 Upgraded BIOS, same result. No change to CST/IST tables in the update (the address changed in SSDT, but thats it) The latest BIOS changes the CST to not depend on the power cord status any more. Its still a linux bug rather than a BIOS bug, since Windows didn't behave this way with the older BIOS, but since its not reproducible with the newer BIOS, I guess its WONTFIX. |