Re: How can Linux demage a motherboard?
- From: anton@xxxxxxxxxxxxxxxxxxxxxxxxxx (Anton Ertl)
- Date: Sat, 21 Apr 2007 05:54:06 GMT
Mark <none_not@xxxxxxxxxxxx> writes:
So you're trying to run the Opteron box off a hard disk linux installation
that was setup on a different cpu architecture and motherboard? That's no surprise that
didn't work too well.
Linux is not Windows. Linux can generally handle this situation quite
fine. I have done so several times. The main thing that could cause
problems is if the old installation misses a driver that is needed for
booting the new board, but that does not result in the problems he
described. Years ago there were problems with the device detection
code of some drivers, but I have not read about that kind of problem
in years, and the way modern distributions work, such problems cannot
be afforded any more.
Intel and AMD use different power management systems
Opteron uses "Cool-n-Quiet" and Intel uses speedstep. Since the intel and AMD
32bit and 64bit architectures are pretty compatible (EMT64<->AMD64 or i386 on either)
the kernel itself was ok, it does some hardware detection at boot time so it should
work on either. But when it loaded cpuspeed the power driver is hard coded in the
/etc/cpuspeed.conf file on most Linux's so it was likely trying to load an
inappropriate power module.
The result would be that the module does not load, because the CPU is
wrong. E.g., here's what I get on an Athlon 64 X2:
# modprobe speedstep-centrino
FATAL: Error inserting speedstep_centrino (/lib/modules/2.6.18-4-amd64-perfctr/kernel/arch/x86_64/kernel/cpufreq/speedstep-centrino.ko): No such device
Then the CPU just runs at full speed, which is no problem on a normal
machine.
- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@xxxxxxxxxxxxxxxxxxxxxxxxxx Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html
.
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