https://bugzilla.kernel.org/show_bug.cgi?id=42770
Summary: ~80000 wakeups/sec after unplugging AC
Product: ACPI
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes
Created an attachment (id=72372)
--> (https://bugzilla.kernel.org/attachment.cgi?id=72372)
3.2.2-pf kernel config
Latest working kernel I know: 2.6.32-zen7
Kernel I work on now: 3.2.2-pf
Distribution: Funtoo x86
Hardware: Asus A6RP BIOS: 214, on ATI IXP SB4xx and Intel Celeron m420 cpu
Overview:
I talking here what is going on in CLI. With AC adapter plugged in I have in
idle ~40 wakeups/sec. This is normal, but when I unplug power source, then
there`s going magic. In 2.6.32 power usage is ~16W and wakeups ~40-300.
Cn Avg residency P-states (frequencies)
C0 (cpu running) (56,5%)
polling 0,0ms ( 0,0%)
C1 halt 1,4ms ( 0,1%)
C2 0,0ms (43,5%)
C3 0,5ms ( 0,0%)
Wakeups-from-idle per second : 85103,9 interval: 15,0s
Power usage (ACPI estimate): 20,7W (1,3 hours)
Top causes for wakeups:
50,7% ( 20,9) BFS
47,2% ( 19,5) [extra timer interrupt]
1,5% ( 0,6) [pata_atiixp] <interrupt>
0,5% ( 0,2) init
0,2% ( 0,1) X
This is huge problem, because power usage is going up to ~24-25W and on battery
form 3.5h to 2h or lower.
>From what I remember this odd behaviour on zen is from 2.6.33. I check newest
stable on vanilla: 2.6.32.57 and 2.6.33.20. On 3.2.1 vanilla this was still
present. Next kernel was 3.2.2-pf.
Steps to reproduce:
Get Asus a6rp, boot and unplug ac adapter.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.
------------------------------------------------------------------------------
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-d2d
_______________________________________________
acpi-bugzilla mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
