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Re: [sheflug] Oops
Marc Kelly <marc [at] achenar.eclipse.co.uk> wrote :
> lesleyb wrote:
>
> > I have been experiencing some CPU overheating problems. I have an
> > Athlon XP 2K Palomino on an Asus A7V333 motherboard and, ever since I
> > built it I have never been able to run it stably at 1667MHz. The board
> > is *not* in jumperfree mode and so I can only choose between 1250 MHz
> > and 1667MHz.
>
> I have a similar story actually. I have an Athlon XP Palomino, which I
> have to down clock the FSB from 133 (266DDR) to 100 (200DDR) and run
> with a 12.5 multiplier, giving around a 1250. It will throw segfaults
> or cause kernel oops when run at higher speeds.
>
> It used to work at full speed, but the motherboard it was on had
> "issues" and fried it own northbridge in some way, it killed one of
> the IDE channels etc and became very unstable. I have a horrible
> feeling the board was overvolting the CPU. Either by design, or
> failure and things finally gave up.
>
Funny you should mention this. I've an Asus A7V333 mobo Rev 1.04 and after I posted I had a chat with an online mate who seems to come up with sensible suggestions and we investigated the asus site. After a bit of digging around I found this ...
The FAQ
Does A7V333 support AMD 333MHz FSB Athlon XP processor?
has the answer
A7V333 with PCB version R2.00 or later can support 333MHz FSB Athlon XP processor.
so it would answer why my 2k XP was fine at 1250MHz but not at 1667MHz i,e running up to the 333 FSB. Just lately I have been experiencing 'issues' at 1250 so I thought I'd try 1665 and see where I get to; which hasn't been very far.
> On the current board it runs fine at this slower speed, but does the
> same things you mention if I crank it up to the design speed. If you
> can, I'd check the voltages either in the bios, or if needed with a
> multimeter.. and compare to something like
> http://www.amdboard.com/amdid.html for your CPU just to be
> sure the
> bios isn't doing something funny with it all. Its a "normal" cpu? No
> funny messing with the links on the top to changes its mode/model or
> anything?
>
> Another possible is that there is some weird issue with voltages to
> the RAM, since these can be controlled on some boards as well the ram
> might be getting hot and then throwing spurious corrupt data out, but
> passing memory tests is kind of annoying.. makes it hard to decide.
>
> You do get OOPS's from somethings, I have a web cam on a machine the
> sometimes causes them for unknown reason, bad drivers. But to be
> heating up to shut down levels is kind of scary, and is quite likely a
> very good reason for oops's since things go a tad crazy internally
> when temps get too hot.
>
> > I suspect today's modprobe oops (http://pastebin.com/565562) occurred
> > when I tried combining 1x1Gb Kingston RAM and 1x256Mb Samsung, both
> > PC2700 DDR 333MHz.
>
> You could try fiddling with the memory timings to slow things down a
> little, if your board allows it. Or even reordering the sockets the
> memory is in to see if its being silly and taking the settings from
> the first stick, which might be too fast for the second stick.
>
The A7V333 allows two states of existence jumperfree and non-jumperfree, and it's in the former where one can start to tweak the memory settings and the CPU speed. Otherwise one is stuck with defaults of 1250MHS/ 100 FSB or 1667MHz/333 FSB and as I have discovered, the board, below rev 2.0 doesn't support the 333FSB so that explains the higher speed issues.
I've never tried jumperfree because then I would have to set some dispswitches on the board and the manual is very confusing because the table of settings says 133 should be on on off off off off but the pictures show off off all the rest on. I'm left unsure as to which is correct.
> > I did check my syslog. The first oops (http://pastebin.com/565290)
> > occurs on 12th Feb and seems to be an alloc problem while in
> > screensaver mode because the process is lisa.
>
> if this "lisa" is the same as i think it is, its some networking tool
> for doing network-neighborhood stuff. Still it probably isn't related.
>
Well I did a man lisa when I found the process name in the log and it came up with something for lissajous figures.
I didn't do a man -k lisa so there may be a network thingamajig around of the same name but I have consistently had problems with the screensaver seizing or taking a while to respond to mouse or keybd input even at the lower speed of 1250MHz. I'm left wondering of the graphics card is having problems e.g. fan on it starting to go.
> > The second oops (http://pastebin.com/565562) seems to have occurred at
> > boot time because it's modprobe that's suffering here.
>
> Your not doing anything weird like trying to force powernow style
> frequency cha nging on a non mobile chip or anything like that? Or a
> mobile chip being used in a desktop?
>
>
I would hope not.;-) I bought this board and cpu some time ago, more than 2 years ago probably more like 3. It's supposed to be an Athlon XP 2000 Palomino with the 333 FSB. I've have always had to run it at 1250 to get any stability, and that result from a FAQ search on the Asus site explains why. Just lately it's been losing the stability at 1250. Thermal problems arise at 1667 so I figured a try at uprating the fans would help. And I wanted more memory for it so I ordered more PC2700 to go with what I had.
I haven't gone for tweaking voltage levels, CPU speed or the memory/CPU timings on this box although it seems possible.
The difficulty atm is sorting out what is wrong where and what will or won't work.
What seems to be sure is I can only run @ 1250MHz on this board and I'll have to try the new RAM at that speed and see where that gets me.
The wierd thing with this is memtest passed all the RAM at 1667MHz and I would have thought it should have thrown something up if the board cannot operate reliably at 1667/333.
Thanks for your comments
Regards
Lesley
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