Re: 2.6.14-rc4-mm1: USB suspend regression

Alan Stern
2005-10-19T16:03:37Z

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On Wed, 19 Oct 2005, Mark Lord wrote:

> None of the recent kernels can resume-from-ram reliably for me
> if I use CONFIG_USB_SUSPEND (set). But with that option UNset,
> suspend/resume to/from RAM works very well.

Try applying this patch:

http://marc.theaimsgroup.com/?l=linux-kernel&m=112966405019175&w=2

It may very well help the CONFIG_USB_SUSPEND problem. If it doesn't,
please turn on CONFIG_USB_DEBUG and post the dmesg log for the suspend and
resume.

> BUT.. new in 2.6.14-rc*, is that the ehci_hcd USB hispeed driver
> no longer survives resume from ram. I have to unload/reload the
> module to get hispeed USB after resume.

Well, on my machine it works with resume from Standby. (Resume from RAM
doesn't work at all -- pushing the power button to start the resume causes
a clean shutdown instead!)

Your dmesg log might provide some useful information here as well. But if
it's a serious problem you'll have to get Dave Brownell to help.

Alan Stern

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