usb disappears after hibernate

[andyb2000]

Hi All,
Am relatively new to Kubuntu, but been working on *nix systems for a while now, and hit an interesting issue.
Some background:
By default ACPI shows as partially support, but I knew via /sys/ that my bios/mbd support S3 (ram), so installed hibernate, and config'd it to use S3.
First thing that failed was when trying to suspend, it tries to remove the kern module:
uhci_hcd
Which seemed to hang (the rmmod), with state D which is odd. I stopped suspend removing that module, and suspend then resume worked fine, except on resume none of the USB lights on my hub came back, and no USB devices were detected/working.
So, trying a few things (forcing rmmod of uhci_hcd and anything else related to it) I couldn't get usb to 're-init', so what I was after was the equiv. to the old /etc/init.d/hotplug restart, as I think if I could get the modules to reload in some way that should solve the problem.

So my couple of queries:
How would I do the equivalent of /etc/init.d/hotplug restart
Why can't I rmmod the uhci or anything usb related without causing rmmod to hang in D state permenantly (it never returns, no matter how long I waited).

Thanks in advance!

Andy
http://www.thebmwz3.co.uk/

[flebber]

Re: usb disappears after hibernate

Thats an interseting question. I found a few links which may be helpful.

http://www.kernel.org/pub/linux/util...cia/howto.html
http://www.kernel.org/pub/linux/util...mciautils.html
http://www.fifi.org/cgi-bin/man2html...8/hotplug.8.gz

Hope they help.