[fedora-virt] Fedora 15 guest suspends, doesn't wake up

[Amit Shah]

On (Fri) 08 Jul 2011 [10:52:58], Richard W.M. Jones wrote:
> On Fri, Jul 08, 2011 at 02:55:46PM +0530, Amit Shah wrote:
> > On (Thu) 07 Jul 2011 [17:53:51], Richard W.M. Jones wrote:
> > > On Thu, Jul 07, 2011 at 09:09:24AM +0100, Richard W.M. Jones wrote:
> > > > 
> > > > On Thu, Jul 07, 2011 at 10:19:22AM +0530, Amit Shah wrote:
> > 
> > > > > > <7>[  867.432147] PM: Entering mem sleep
> > > > > 
> > > > > The serial console should continue working after resume from S3... can
> > > > > you try that?
> > > > 
> > > > Yeah, I'll have to configure a serial console.  Will try this
> > > > later ...
> > > 
> > > Serial port hangs as well.  The last messages on the serial console were:
> > > 
> > > [  901.147074] PM: early resume of devices complete after 5.725 msecs
> > > [  901.147907] pci 0000:00:01.0: PIIX3: Enabling Passive Release
> > > [  901.148078] ata_piix 0000:00:01.1: setting latency timer to 64
> > > [  901.148213] uhci_hcd 0000:00:01.2: PCI INT D -> Link[LNKD] -> GSI 10 (level,0
> > > [  901.148260] uhci_hcd 0000:00:01.2: setting latency timer to 64
> > > [  901.148423] usb usb1: root hub lost power or was reset
> > > [  901.463151] usb 1-1: reset full speed USB device using uhci_hcd and address 2
> > > [  901.743467] PM: resume of devices complete after 596.007 msecs
> > > [  901.755059] PM: Finishing wakeup.
> > > [  901.755061] Restarting tasks ... done.
> > 
> > Looks like it came up fine; did you have a tty running on this serial
> > line?  That should work too.
> 
> Yes, I had an open shell at the time.  Hitting return didn't get me
> back to the prompt.  It looks like the VM / qemu is genuinely locked up.

Hm; haven't seen that behaviour.

> I'm a bit confused about this.  It appears that sending the shutdown
> ACPI signal is causing the VM to suspend *AND* resume (is that right?)

Yes, S3 (suspend-to-memory) currently means suspend and immediately
resume.  It can't do anything else: qemu can't go into a low power
state; we will need a new monitor command to wake the machine up if we
want to keep it suspended.

		Amit