Messages in this thread | | | Date | Fri, 14 Sep 2001 01:38:44 +0100 (BST) | From | Anton Altaparmakov <> | Subject | Athlon problems fixed tweaking BIOS memory settings |
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Hi all,
I had a few random crashes on my Athlon EPOX 8KTA3 mobo Athlon 1.33GHz (BIOS from 06/14/2001) and Alan Cox suggested to run memtest as the oops apparently looked like memory corruption. Sure enough memtest showed problems above 256MiB but swapping the chips around still showed problems above 256MiB which meant it couldn't be the chips at fault (failing tests were 5 and 8 in memtest86 supplied with SuSE 7.2).
Playing with the memory settings I found that using the "DRAM Timing by SPD" option was unstable but setting it to manual and using the settings: 133MHz, CL2, Bank interleave disabled as well as Pre charge to active 3T, active to precharge 6T, active to cmd 3T. Makes it fully stable even with Page-Mode enabled.
Changing the precharge/act/cmd value to faster caused increasing amounts of errors in memtest to appear and enabling Timing by SPD did the same. Memory now running at 23.1 MiB/sec according to memtest86 compared to 26 MiB/sec at previous, faster but unstable settings.
It seems there is some kind of problem with the "Timing by SPD" option. Also no matter what the settings are the system is always error free below 256MiB, which means that might explain why some people are having problems and some are not... Until I upgraded the 256 to 768MiB I didn't have any problems.
Just a datapoint...
Best regards,
Anton -- Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @) Linux NTFS maintainer / WWW: http://linux-ntfs.sf.net/ ICQ: 8561279 / WWW: http://www-stu.christs.cam.ac.uk/~aia21/
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