From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: Excessive power consumption on Sony VAIO VPCZ23A4R Date: Sun, 06 Jan 2013 15:18:20 +0100 Message-ID: <1939348.oLSthUfcvW@vostro.rjw.lan> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7Bit Return-path: Received: from hydra.sisk.pl ([212.160.235.94]:33373 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756007Ab3AFOMk (ORCPT ); Sun, 6 Jan 2013 09:12:40 -0500 In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "Alexander E. Patrakov" Cc: linux-acpi@vger.kernel.org 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.