Messages in this thread | | | Date | Tue, 22 Feb 2011 09:45:44 +0100 | From | Jiri Slaby <> | Subject | Re: [linux-pm] Resume hangs [was: mmotm 2010-12-02-16-34 uploaded] |
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On 02/04/2011 08:33 PM, Alan Stern wrote: > On Fri, 4 Feb 2011, Jiri Slaby wrote: > >>>> It seems to suffice... No hangs still. Should I enable pm_async back >>>> again to confirm the issue is still present? >>> >>> Yes, please, it would be good to know for sure. >> >> Ok, confirmed right now :). >> >> I disabled pm_async for USB again. What do you suggest next? > > What happens if you leave pm_async enabled but unplug all the USB > devices before suspending? If there are any USB devices you can't > unplug, you can get an equivalent result by unconfiguring the root > hubs: > > for a in /sys/bus/usb/devices/usb* ; do > echo 0 >$a/bConfigurationValue > done
This doesn't seem to help. The hang happened 3 times during the 2 weeks.
I have /etc/pm/sleep.d/99usb-debug with: #!/bin/bash
send() { for a in /sys/bus/usb/devices/usb* ; do echo $1 >$a/bConfigurationValue done }
case "$1" in hibernate|suspend) send 0 ;; thaw|resume) send 1 ;; *) ;; esac
exit 0
And it indeed properly enable/disable usb before/after suspend.
regards, -- js
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