[mythtv-users] Random Reboot

[Sarah Hayes]

Nathan wrote:
> Hi all,
>
> I am having troubles with a machine that is rebooting on its own.  I 
> would like to know if anyone can suggest tools to stress test the 
> machine.  Memeory/CPU/Disk/Ethernet, etc...
>
> A bit of history:  I have moved most of the parts from one box to 
> another and gone from FC6 to Ubuntu 7.10 and upgraded to .21.  Not sure 
> if it is a hardware issue or software.  The machine is fine when not 
> running Myth, but then it is really not doing anything.  It seems to 
> only reboot while recording, but only once in a while.  Maybe only while 
> a remote frontend is connected too, but not sure.  I have a single 
> PVR500, and I have checked that each tuner has its own IRQ.  Anything 
> else to look at?
>
>   
Install lm_sensors and see what it reports the voltages as being (plus 
reboot in to the BIOS and check there). Yes, a dying (or overloaded) PSU 
can cause all manner of weirdness, from crashing through to weird 
'wowing' noises from the drives as there spin speed fluctuates.  Check 
for fur'd up fans/heat sinks... possibly a dead northbridge fan, as 
that's usually where the embedded disk controller is.   memtestx86 can 
do the memory, as to overall stress testing... dunno... I'd set a loop 
to compile QT3 repeatedly whilst having dd spam the drives with 1GB 
chunks of /dev/urandom personally but I'm sure there is a better way.