System crash in Fedora 13

[ytchen]

MB: Asus P5Q-EM, with the latest BIOS
RAM: F2-6400CL5Q-16GBPQ
CPU: Q9550


This morning I received this package and installed them on my Linux PC, to upgrade it from original small 8GB configuration.

At first I spent 2 hours running memtest+-4.1 on it to check 16GB memory and it passed.
Then I tried to boot Fedora13, but every time the system just crashed without response after login and using it for a while, unless I reset it.

Because overclocking is not my style, all settings about DRAM timing have been set to Auto since original 4x2GB modules were used.
And it's weird that once I tried to set BIOS DRAM frequency as DDR2-800, it crashed soon in booting stage with showing some "segment register error" like messages.

Now I've reinstalled them in different orders and start to run over-night memtest+.
To see if any malfunction memory cell could be found.


Any suggestion or comment?

[GSKILL TECH]

These should be plug and play. Try setting memory to 1.90V, and NB Voltage to 1.20V and see if that makes a difference.

Thank you
GSKILL TECH

[ytchen]

Thanks for your info.

I tried, but it didn't work. (Also tried to adjust timing parameters slower)
All night memory test passed but still Fedora13 crashes.

[GSKILL TECH]

So 1 stick at a time everything passed? Do you have the latest BIOS for the motherboard?

Thank you
GSKILL TECH

[ytchen]

Yes, every single DIMM passed and BIOS is the latest.

I also tried to remove the side plate of the case and reinstall OS. The system still hangs.

[GSKILL TECH]

Try reinstalling Fedora to see if that solves the problem. I can't see any problems so far.

Thank you
GSKILL TECH

[ytchen]

I tried to reinstall FC12, FC13-x86_64 & windows 7, and all failed to work.

It seems to be compatibility issue to this MB, since I installed 2 of them on my P5KPL-CM, it was recognized as 8GB and can run Windows XP normally. (Though only half of 8GB can be used by OS)

Anyway, thanks for your help.