From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Micael <kam1kaz3@gmail.com>
Cc: linux-kernel@vger.kernel.org,
Linux PM list <linux-pm@vger.kernel.org>,
Linux PCI <linux-pci@vger.kernel.org>,
Zheng Yan <zheng.z.yan@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Huang Ying <ying.huang@intel.com>
Subject: Re: Power regression found on 3.6-rc1+
Date: Mon, 29 Oct 2012 08:49:38 +0100 [thread overview]
Message-ID: <2972912.ooClOChIux@vostro.rjw.lan> (raw)
In-Reply-To: <CAKw44fY_f69qGXHbcyXvr4i=or4FpB7TDQVijLkN7tv5iU-zrQ@mail.gmail.com>
On Friday, October 26, 2012 12:37:36 AM Micael wrote:
> I have a laptop running Arch Linux and found that upgrading from 3.5.6
> to 3.6.2 had a huge impact on my battery life. Power consumption went
> from ~10W to ~20W.
> I initially thought it was a i915 driver problem since the CPU temps
> went up and so I opened this bug:
> https://bugzilla.kernel.org/show_bug.cgi?id=49031
>
> However, as you can see if you read the bug's comments, after
> bisecting this I found the culprit to be commit
> 71a83bd727cc31c5fe960c3758cb396267ff710e:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=71a83bd727cc31c5fe960c3758cb396267ff710e
I wonder what the problem may be here.
It looks like the polling change in pci_pme_list_scan() is causing problems
to happen.
Thanks,
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
parent reply other threads:[~2012-10-29 7:49 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <CAKw44fY_f69qGXHbcyXvr4i=or4FpB7TDQVijLkN7tv5iU-zrQ@mail.gmail.com>]
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