Re: 2.6.25-rc7: Ugh.

Oliver Neukum
2008-04-02T08:08:20Z

Am Montag, 31. März 2008 21:21:45 schrieb Mark Lord:
> Oliver Neukum wrote:
> >
> > But if power is cut with newer kernels and older kernels retain it, something
> > must have changed. Can you undo the ACPI changes since the last working
> > kernel?
> ..
>
> No, that's no different.
> This notebook always cuts +5V from USB on suspend or poweroff.
> Regardless of kernel version. I don't know how common this is,
> but all of my notebooks here have always behaved this way,
> as have most (but not all) of the larger systems.
>
> The two most recent PCIe motherboards I have here
> do provide +5V standby power to USB, even when "OFF",
> much to my annoyance and to the detriment of this planet.

Very well.

Mark, can you get a sysrq-t trace of your whole system when USB goes
dead? And please enable CONFIG_USB_DEBUG. We need to do whether
khubd and ksuspend_usbd are in state D.

Regards
Oliver