Messages in this thread | | | Date | Fri, 13 Jan 2006 00:08:35 +0100 | From | Lukas Hejtmanek <> | Subject | ACPI Suspend-to-ram issues |
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Hello,
I noticed (also thanks to discussion about DOS and NTFS) that suspend to ram consumes a lot of battery power. I'm using 2.6.15-git7 kernel now.
According to lspci I have: 0000:00:00.0 Host bridge 0000:00:01.0 PCI bridge 0000:00:02.0 VGA compatible controller (915GM) 0000:00:02.1 VGA compatible controller 0000:00:1b.0 High Definition Audio Controller 0000:00:1d.0 USB Controller UHCI 0000:00:1d.1 USB Controller UHCI 0000:00:1d.2 USB Controller UHCI 0000:00:1d.3 USB Controller UHCI 0000:00:1d.7 USB Controller EHCI 0000:00:1e.0 PCI bridge 0000:00:1f.0 ISA bridge 0000:00:1f.1 IDE interface 0000:00:1f.3 SMBus Controller 0000:01:00.0 Ethernet controller 0000:01:01.0 CardBus bridge 0000:01:01.1 FireWire (IEEE 1394) 0000:01:01.2 SD/SDIO/MMC/MS/MSPro 0000:01:01.3 Memory Stick Bus 0000:01:01.4 Ricoh Co Ltd xD-Picture Card Controller 0000:01:02.0 Network controller
I have modules for both USB1.1, USB2.0, sound card, dri, both ethernet controllers, cardbus, and IEEE1394.
In normal situation, I load modules for: DRI, sound, USB1, USB2, ethernet cotroller. Suspend-to-ram takes 2.8W.
If I boot using init=/bin/bash i.e. not using any module, then suspend-to-ram takes 1.6W (which is still a lot, it should taky 0.7W approx).
I do not know, how PCI devices disabling works. Does message: ACPI: PCI interrupt for device 0000:01:00.0 disabled have additional meaning, that device 0000:01:00.0 went into D3 state?
However, I have these messages in dmesg (if usual modules are present): ACPI: PCI interrupt for device 0000:01:00.0 disabled ACPI: PCI interrupt for device 0000:00:1d.7 disabled ACPI: PCI interrupt for device 0000:00:1d.3 disabled ACPI: PCI interrupt for device 0000:00:1d.2 disabled ACPI: PCI interrupt for device 0000:00:1d.1 disabled ACPI: PCI interrupt for device 0000:00:1d.0 disabled ACPI: PCI interrupt for device 0000:00:1b.0 disabled
So, it looks like IRQ is not disabled for graphic and IDE, cardbus, firewire, card reader. Is this OK?
-- Lukáš Hejtmánek - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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