[Debian-eeepc-devel] Adding pciehp to /etc/modules adds 5 seconds to boottime.
Alan Jenkins
alan-jenkins at tuffmail.co.uk
Fri Nov 21 13:46:02 UTC 2008
Klaus Ade Johnstad wrote:
> I'm using debian lenny on a eee 900, with kernel
> linux-image-2.6.26-1-686 (2.6.26-8). When I load pciehp
> via /etc/modules, the boottime goes from 24s to 29s, as seen from
> bootchart.
>
> I believe that loading pciehp is a good thing (tm), but I don't like the
> extra boottime asociated with it.
>
> Anyone having any ideas, can I have pciehp, but without adding 5s to my
> boottime?
pciehp is only useful for the wireless toggle, which hotplugs the PCI device. Matthew Garret posted a better solution very recently - check the linux-acpi mailing list archives. It puts eeepc-laptop in charge for this hotplug, and it doesn't require any delays at all. When I tried suspend to ram, pciehp also caused delays of over 5 seconds on resume, which is completely unacceptable.
You can expect this to be merged in kernel version 2.6.29.
I've been tracking the kernel status on my Eee (701), I hope I can help with any similar questions.
Regards
Alan
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