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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
: High normal (vote)
Assignee: Gentoo Linux bug wranglers
URL: https://bugzilla.kernel.org/show_bug....
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-08-11 17:29 UTC by Jonathan Geisler
Modified: 2010-08-12 13:18 UTC (History)
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.