From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: "Alexander E. Patrakov" <patrakov@gmail.com>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Excessive power consumption on Sony VAIO VPCZ23A4R
Date: Sun, 06 Jan 2013 15:18:20 +0100 [thread overview]
Message-ID: <1939348.oLSthUfcvW@vostro.rjw.lan> (raw)
In-Reply-To: <CAN_LGv1fZraYbH7LCUwS8L=KsX9vsr8NK7hG+64s51TwPG4mRw@mail.gmail.com>
On Sunday, January 06, 2013 06:07:53 PM Alexander E. Patrakov wrote:
> Hello.
>
> I have a Sony VAIO VPCZ23A4R laptop. In Windows 7, it has a battery
> life of 7 hours (but now I have only Gentoo Linux on my SSD). In
> Gentoo Linux (with kernel 3.7.1), the battery lasts only 4-5 hours. I
> guessed that the problem can be related to ASPM,
Most likely that's not the case. I suppose that the graphics power management
is more aggressive on Windows and that depends on the graphics driver.
> and booted the laptop
> with the "pcie_aspm=force" kernel parameter. Result:
>
> [ 0.709517] \_SB_.PCI0:_OSC invalid UUID
> [ 0.709518] _OSC request data:1 1f 1f
> [ 0.709523] pci0000:00: ACPI _OSC support notification failed,
> disabling PCIe ASPM
> [ 0.709524] pci0000:00: Unable to request _OSC control (_OSC
> support mask: 0x08)
>
> acpidump output is available at
> https://bugs.freedesktop.org/attachment.cgi?id=65558
>
> What else do I need to send you in order to debug and eliminate the problem?
Can you please post the output of dmesg without the pcie_aspm=force argument?
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
next prev parent reply other threads:[~2013-01-06 14:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-06 12:07 Excessive power consumption on Sony VAIO VPCZ23A4R Alexander E. Patrakov
2013-01-06 14:18 ` Rafael J. Wysocki [this message]
2013-01-06 14:26 ` Alexander E. Patrakov
2013-01-07 11:04 ` Alexander E. Patrakov
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