[gentoo-user] Suspend to RAM caused crashes

[Mick <michaelkintzios@gmail.com>]

[-- Attachment #1: Type: Text/Plain, Size: 1606 bytes --]

Here's a strange one:

Suspending a Pentium4 32bit machine used to work a treat.  For years.  Then 
around 9 months ago or so, I can't recall exactly, it started causing crashes.  
What happens is that the monitor will go to sleep and the disk will stop 
immediately, but the machine continues to run and run and run ...

At that point I have lost access to the keyboard and the monitor does not wake 
up if I move the mouse.  Using ssh to connect shows that the machine is off 
the network, so I assume that the NIC is also suspended.  The only way to 
recover is to pull the plug.  :-(

Unfortunately, mysql has left a lock file behind, so it won't start at reboot 
until I remove the lockfile.

Now, here's the strange thing about all this.  I have 4 RAM modules, 2x1G and 
2x500M.  Following the manual I have installed them in this order:  

slot 1 - 1G,
slot 2 - 0.5G,
slot 3 - 1G,
slot 4 - 0.5G

If I try to suspend the machine soon after boot, when it is still using low 
amounts of memory, the machine will suspend each time without fail (just like 
it used to do in the past).

If I wait until the machine is using more than 1G or so, then it will always 
crash.

I'm running memtest86+ just in case, but 3 passes and no errors are shown so 
far.  Suspend to RAM is really a time saver on this machine and was being used 
at least 4-5 times a day.  Now the box is running non-stop 16 hours a day or 
more, which is wasteful (although with the Pentium4 I'm saving on central 
heating bills!)  Any ideas what I can look into to resolve this?
-- 
Regards,
Mick

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 198 bytes --]