332309 – kacpid eats 100% CPU with newest kernel

Bug 332309 - kacpid eats 100% CPU with newest kernel

Summary: kacpid eats 100% CPU with newest kernel

Status:	RESOLVED TEST-REQUEST

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] Core system (show other bugs)
Hardware:	AMD64 Linux

Importance:	High normal
Assignee:	Gentoo Linux bug wranglers

URL:	https://bugzilla.kernel.org/show_bug....
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Keywords:

Depends on:
Blocks:

Reported:	2010-08-11 17:29 UTC by Jonathan Geisler
Modified:	2010-08-12 13:18 UTC (History)
CC List:	1 user (show)

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Runtime testing required:	---

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Description Jonathan Geisler 2010-08-11 17:29:52 UTC

This is a known and fixed regression in the 2.6.34 kernel.  The last comment points to the commit in Linus' tree (http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b27759f880018b0cd43543dc94c921341b64b5ec).  I have patched my kernel with this and tested that it works properly.  It would be nice to have the gentoo-sources include this patch until the 2.6.35 kernel comes out.

Reproducible: Always

Steps to Reproduce:
1. Get an HP 8540w laptop
2. build the most recent gentoo-sources on the machine
3. run the kernel

Actual Results:  
acpid takes 100% of one CPU!

Expected Results:  
Almost no noticeable time spent by acpid.

Comment 1 Eray Aslan gentoo-dev

2010-08-11 20:08:12 UTC

Please check the latest kernels in the tree (2.6.34-r4 and 2.6.35-r1 at the moment).  They should have this patch already.

Comment 2 Eray Aslan gentoo-dev

2010-08-12 13:18:53 UTC

Please reopen if it is still a problem.