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SubjectSolved: Strange Kernel Problems
Thank you for all the hints i got. 

Finally a reseller located the problem, it was the motherboard which was
not able to deal with dual PII/333 processors. Every other processor (<333)
should work fine in single and dual mode.

-> GA-686DLX Boards with revision 1C are _NOT ABLE_ to deal with dual PII/333
the stable revision is 1E

We also got a very useful hint from GigaByte Taiwan: They gave us a list of
capacitors which should be removed to turn a 1C board into a 1E board :-)



> Hi,
> we recently bought two nearly identical Dual PentiumII Systems. One of them
> is working quite stable, the other one gives strange warnings and error
> messages and hangs quite often.
> System desc:
> both of them have
> dual PII/333Mhz
> GigaByte GA-686DLX Motherboard
> onboard Adaptec AIC7880 SCSI-Ctrl
> 3Com 3c905 Boomerang Networkcard
> DCAS-32160W 2Gb HD
> XM-6201TA SCSI CdRom
> internal Iomega ZIP Drv
> the _WORKING_ System has in addition
> 128 Mb SDRam
> DDRS-39130W 9Gb Hd
> Mad16 Soundcard
> Matrox Millenum II AGP/8Mb
> the _FAILING_ System has in addtion
> 512 Mb SDRam
> DGHS-?? 18 Gb Hd
> ATI PCI Graphics
> both systems are running 2.1.105-SMP with no patches and (hopefully) all system
> utilities uptodate.
> With the 18Gb HD installed, the system hangs with a message :
> Unknown Interrupt
> as the last syslog entry and the system hangs.
> By replacing the 18Gb Hd by an 4Gb Quantum SCSI Hd we got the strange
> warning:
> Uhhuh: NMI received for unknown reason 2c
> Dazed and confused but trying to continue.
> Do you have a strange power saving mode enabled?
> useless to mention that we don't have _any_ power saving mode enabled.
> After this message, the system did still work.
> Before using the 2.1.106 we had the 2.0.33 installed. There the second
> system hang without _ANY_ message. With both kernel, the non-SMP mode
> works well.

Christopher | Snail: Lehrstuhl fuer Mustererkennung (Informatik 5)
Drexler | Universitaet Erlangen-Nuernberg
| Martensstr. 3, 91058 Erlangen, Germany
| Phone: +49 9131 85-7874 Fax : +49 9131 303811

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