Re: Error: kernel cannot suspend to ram.

On 10/1/07, Doncho N. Gunchev <gunchev@xxxxxxxxx> wrote:
When running on the console the command 'pm-suspend', I get the following:

$ pm-suspend
Error: kernel cannot suspend to ram.
$

I just looked at pm-suspend's source. This error message means that
in /sys/power/state there's no mem present (try 'cat /sys/power/state'
to see what is supported).


$ cat /sys/power/state
standby disk
$


The kernel thinks this machine can not suspend to ram.
...
$ uname -r
2.6.22.9-91.fc7
...
The lspci output:

00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
00:01.0 PCI bridge: Intel Corporation 82945G/GZ/P/PL PCI Express Root Port (rev 02)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
...
01:00.0 VGA compatible controller: nVidia Corporation GeForce 6500 (rev a1)

This one can cause problems at resume, but not at suspend time :-)
...

The output of 'cat /proc/cpuinfo' is:

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Pentium(R) D CPU 2.80GHz
stepping : 7
cpu MHz : 2813.806
...
processor : 1
...

Paul


Is this a desktop (Pentium M was for mobile AFAIK), isn't it?

Yes, my computer is a desktop one.


Has this machine ever been able to suspend to RAM?

Never.

If so, have you changed something in your BIOS?

Please check what these two say:
grep -i 'power states' /var/log/messages
grep -i 'suspend' /var/log/messages

Both commands return nothing.

Thanks, Doncho.

Paul





I've seen something like / long ago :-) /:
'Software Suspend has malfunctioning SMP support. Disabled :('
but have no idea what the current status is...

--
Regards,
Doncho N. Gunchev, GPG key ID: 0EF40B9E, Key server: pgp.mit.edu

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