Date: Thu, 21 Feb 2002 11:57:38 +0100 From: Paolo Pisati <flag@libero.it> To: FreeBSD_Stable <freebsd-stable@freebsd.org> Subject: spontaneous rebbot, memtest and overclock sodimm Message-ID: <20020221115738.A35667@southcross.skynet.org>
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Damn! Probably I found the source of my problem and now I'm goint to explain: 2 months ago I bought an Asus laptop (l8400l) with this hw -PIII@1133Mhz with 133Mhz bus -chipset Intel 815EM -256 MbRAM -Ati mobile ly 16mb ram the memory is divided in 2 banks -the first is a 128mb bank soldered inside the laptop mobo 8ns (133Mhz) -the second is a normal sodimm 128 mb double face bank, on the chip mem there's a little label with written the manufacturer name (apacer), the part num (71.74470.110), serial num (2301435-00405) and the sigle PC133 The computer works very well and for the price is a really bargain, but (yes there's a but...) under FreeBSD I suffered some spontaneous reboot from time to time. After a period of investigation I decided to run the memtest (/usr/ports/sysutils/memtest) and HORROR: the program found a lot of problem with my memory (ARGHHHHHHHHHHH!!!!!!!!!!!!), but this is strange cause the first thing that I did when i bought the laptop was to run this memtest and everything was ok 2 month ago, anyway.... Then I decided to find a new memtest so I tried Goldmem: after 6 hours of test no problems were found with this program. Strange. At the end, trying to grasp some other info on my mem, I used a little util found on the Asus installation cd (probe something) and SURPRISE SURPRISE the mem soldered on the mobo is a 8ns bank (so a real PC133) while the sodimm bank is a 10ns bank: but my bus is running at 133Mhz -> my mem is overclocked!!! Immediately I pulled out the guilty sodimm and rerun memtest -> no errors!!! ... I'm a bit disappointed from this adventure, what can I say? What do you think? Is it possible that the first run of memtest wasn't able to find the problem? Why goldmem can't find the problem? Now I'm running with halt mem and It seems to works well... =P -- Paolo Visit the Italian FreeBSD User Group Site: www.gufi.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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