AMD64, Gentoo and Hardware issues

[mrtsufo]

Hello, I am currently using Gentoo with the following hardware:

Athlon FX-55 CPU
ASUS A8V-Deluxe
Corsair Dual Channel (1 gb) pc3200c2pt RAM

I am running Gentoo in 64bit mode and keep getting Kernel panics when I run in dual channel mode with RAM. Once I make it single channel mode, all seems to be fairly stable. Has anyone else run into this problem with AMD64? Also, what seems to be the best motherboard/hardware to use with the combination of Gentoo/AMD64 and overclocking with regards to stability and performance? Any advice would be greatly appreciated.

[wmartino]

Have you ran Memtest86. It could be bad memory. I would start there.
_________________
Intell C2D Q6600 @ 3.0Ghz -- ASUS P5W DH
Zalman 9700 LED -- 8g OCZ Gold Memory -- GECUBE 1950xtx
250g Gentoo64 -- 200g Windows Vista Ultimate -- 200g Mac OSX
250g Windows XP PRO -- Liteon DVD, Pioneer DVR-111D DVD-D/L-RW

[mrtsufo]

All was clean there. Thanks.

[jsnorman]

I am using same memory sticks here on my dual opteron (same memory controler as FX55) no problem in amd64.

Did you pass idle=poll to the kernel? I have found this is absolutely required at least on dualies. Try it out and see if that fixed your problem.

Also, I had a lot of problems with kernels before 2.4.11* so make sure your running latest and greatest.

[nomenquis]

I've got a non deluxe board, 2 gigs of the same ram and can hardlock my machine using something as simple as:

#include <stdlib.h>
#include <stdio.h>
int main(int argc, char *argv[])
{
char buf[1024*1024];
int i;
for (i=0;i<1024*16;++i)
{
printf("%d\n",i);
memset(buf,0,1024*1024);
}
printf("Done\n");

}


I've already tried different ram and different PSUs. Either my board is buggy or my cpu. After posting my issuse to the lkml 2 other folks showed up being able to reproduce this hardlock. If you want give this simple c programm a try (just cc test.c and then execute it).

Bottom line: I'll never buy an asus board again.

kind regards

[jsnorman]

The memory controller on amd64 systems is on CPU... it is not likely that it is Asus's fault (though it is possible).

Memory is notoriously tricky on the amd64. Check around, make sure you are using certified memory for you board.

I have an A8n-SLI Deluxe here, nary a problem unless I overclock it.

Please try idle=poll you may be surprised.

[Lin-Darian]