On Monday 20 November 2006 03:08, Jeff Vian wrote: > > Also, after the crash it is not sufficient to re-boot > > by pressing the power switch for 10 seconds - > > one has to switch the machine off and on at the back. > > I take it this shows some kind of memory corruption. > > This description tells me that something is definitely not right with > memory after the crash. Have you checked with memtest86 to see if that > reports anything? Thanks for the suggestion - I assumed the memory was OK since I have never had problems with Windows XP or i386 Fedora. But I've downloaded the memtest86+ rpm, and will run this tonight. > You also might try reducing the speed of the memory and see if that has > any affect. How do I reduce the memory speed? Do you mean reduce the CPU speed with something like cpufreq? > What about cooling on the processor? Are you using the heat sink that > was provided with the CPU or better? If so then it is not likely that > it is heat related, although with inadequate cooling it is possible. Yes, I haven't touched the CPU or heat sink. Unfortunately I'm not sure how to measure the CPU temperature. I'm compiled a kernel with ACPI=>Processor=>Thermal Zone enabled, but it doesn't seem to show anything in /proc/acpi on this machine. Again, many thanks for your suggestions. I must say the machine seems to be running faster under i386 than it did under x86_64, though that may just be an impression because I am not waiting for it to crash! -- Timothy Murphy e-mail (<80k only): tim /at/ birdsnest.maths.tcd.ie tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland
