RE: [Sheflug] Power fluctuations...

["Paul Sims" <nospam [at] lombard.co.uk>]

It does sound rather like you're getting excessive noise on the PSU, 
possibly due to a leaky output smoothing capacitor. Find a friend with an 
oscilloscope and monitor +5V and +12 with respect to PSU ground. The PSU 
may sag slightly below +5 and +12 but not by more than a couple of tenths 
of a volt. If you see noise, start disconnecting the hdds & see if it 
recovers.

On Tuesday, June 20, 2000 11:21 PM, Craig Andrews 
[SMTP:craig [at] fishbot.free-online.co.uk] wrote:
> Hi all,
>
> I have been suffering for a while with a rather annoying problem. Well,
> two actually.
>
> First, whenever the hard drive gets a good thrashing (any drive, in fact,
> out of 3) the mouse cursor takes on a life of it's own. It can be 
annoying
> in Gimp to have a screen-long line just because of a flushed buffer! I
> think this is (partly) to do with either a) the PS/2 interface, or b) the
> IMPS/2 driver. Note that ALL IMPS/2 mice do the same thing. Not tried any
> other protocols.
>
> Second, my RivaTNT2 seems to lock up whenever it has a lot to think
> about. Particularly involving alpha blending and the like. I thought that
> this was to do with the alpha glx driver I have, but the release Windoze
> driver does it too. It doesn't do it straight away, mind. It waits. In
> Tux- A quest for herring, it only locks when I press Space for the menu,
> and the transparent text appears. In NFS4 in Windows, it seems to be when
> water or lens flare is present.
>
> What I put both these down to is a lack of power. In my machine, I have:
>
> K6-2/500 w/ 96Mb EDO Ram
> NVidia RivaTNT2 32Mb AGP 2x
> SB Awe 64
> Modem (internal)
> CD-Rom and Floppy
> 15, 8.4 and 3.2 Gb Hard disk drives
> Genius optical mouse (IMPS/2 driver)
> 200W (old, cheap) PSU
>
> What does anyone reckon to my theory, before I splash out on a more
> powerful PSU? (The old one cost 16 quid, with a case!)
>
> Craig Andrews
> craig [at] fishbot.free-online.co.uk
>
> - - - - - - - - - - - - - - - - - -
> Life would be so much easier if we
> could just look at the source code.
> - - - - - - - - - - - - - - - - - -
>
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>   GNU the choice of a complete generation.
> 

"WorldSecure Server <lombard.co.uk>" made the following
 annotations on 06/21/00 13:21:23
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