Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: 2.6.25-rc7: Ugh. | Date | Wed, 2 Apr 2008 10:04:52 +0200 |
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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.
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