Re: suspending to disk on FC6 not working

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Tuesday, 26 September 2006 23:47, Louis Garcia wrote:
> On Tue, 2006-09-26 at 12:00 +0200, Rafael J. Wysocki wrote:
> > On Tuesday, 26 September 2006 01:04, Louis Garcia wrote:
> > > On Mon, 2006-09-25 at 22:15 +0200, Rafael J. Wysocki wrote:
> > > > On Monday, 25 September 2006 21:34, Louis Garcia wrote:
> > > > > On Mon, 2006-09-25 at 20:43 +0200, Rafael J. Wysocki wrote:
> > > > > > On Monday, 25 September 2006 19:10, Louis Garcia wrote:
> > > > > > > On Mon, 2006-09-25 at 09:16 +0200, Rafael J. Wysocki wrote:
> > > > > > > > On Monday, 25 September 2006 00:55, Louis Garcia wrote:
> > > > > > > > > When I first installed FC6 test 2 suspend to disk worked on my box which
> > > > > > > > > is a Dell dimension 8200 (P4). During the kernel-2.6.17-xxx updates this
> > > > > > > > > has stopped working. Now kernel-2.6.18 has come out and I'm having the
> > > > > > > > > same problems. I have tried to get this resolved on there mailing list
> > > > > > > > > but it's not high on there things todo. I would like to debug suspend to
> > > > > > > > > see what is happening. What is the proper way to do this? Has this been
> > > > > > > > > discussed before? Is there a separate mailing-list for suspend?
> > > > > > > > 
> > > > > > > > Generally you're not giving enough information to trace the problem.
> > > > > > > > 
> > > > > > > > First, what doesn't work, the suspend to disk or the resume?
> > > > > > > > 
> > > > > > > > Rafael
> > > > > > > > 
> > > > > > > > 
> > > > > > > 
> > > > > > > Suspend to disk does not work. When trying to suspend, from gnome, it
> > > > > > > goes normally. The power button blinks and then restarts. I'm back to
> > > > > > > the screensaver lock screen but the mouse and keyboard are dead.
> > > > > > 
> > > > > > Can you please try booting the kernel with init=/bin/bash, mount /proc,
> > > > > > mount /sys, do "/sbin/swapon -a" and "echo disk > /sys/power/state"?
> > > > > > 
> > > > > > Rafael
> > > > > > 
> > > > > > 
> > > > > After the echo command the box turned off. The power button was not
> > > > > blinking. I restarted it and went into grub,
> > > > 
> > > > Did you append init=/bin/bash to the kernel command line after it had gone
> > > > into GRUB?
> > > 
> > > No, first I booted with init=/bin/bash. Then I did the things you said,
> > > When the box was off I booted normally. You saying I should append
> > > init=/bin/bash before and after trying to suspend.
> > 
> > Well, it shouldn't matter if you append init=/bin/bash after trying to
> > suspend, but if the shell appears without it, this means the system actually
> > suspended and resumed.
> > 
> > > > > linux booted into bash.
> > > > 
> > > > Had it been displaying a progress meter before the bash came up?
> > > 
> > > Never saw a meter before.
> > > 
> > > > > When suspend was working the power button flashed and when I pressed it
> > > > > the box booted right into linux and the screensaver lock screen
> > > > > bypassing grub altogether.
> > > > 
> > > > That's because if you suspend "normally", some scripts run before the suspend
> > > > that change your GRUB configuration and use the "platform" suspend method.
> > > > However, the problem seems to be on much lower level and to debug it we need
> > > > to bypass these things.
> > > 
> > > Yes, something in the kernel I assume. How do I debug this further? 
> > 
> > Please boot the kernel with "2" appended to the command line, so the system
> > goes to the 2nd runlevel (ie. without network servers and X).  Then log in
> > as root, do "echo 8 > /proc/sys/kernel/printk" and
> > "echo disk > /sys/power/state".  The system should suspend to disk and power
> > off the machine.  If it doesn't do that (ie. if it returns to the shell
> > immediately), please do "dmesg > dmesg.log" and send the dmesg.log file
> > to me.
> 
> The system didn't power off, it returned to the shell. I attached dmesg.

Thanks.

Pavel, it looks like we have a problem with the CPU suspend on this box:

acpi acpi: freeze
PM: snapshotting memory.
Class driver suspend failed for cpu0
Could not power down device &q->lock: error -22
Some devices failed to power down, aborting suspend
acpi acpi: resuming

Greetings,
Rafael


-- 
You never change things by fighting the existing reality.
		R. Buckminster Fuller