On Wednesday 04 December 2002 05:11 pm, Darryl Okahata wrote:
> 1. IIRC, USB ports on KT133A motherboards were buggy (???).

Could be.  The ATA controller was also flaking out under 4.7, but is solid as 
a rock under 5.0-DP2, which is why I'm sticking with it despite other 
potential bugs.  I can burn CDs now!

> 2. Drawing too much power from the USB ports can cause the ports to shut
>    down.  The absolute maximum limit is 500mA, which isn't much (some
>    2.5" USB hard disks can draw MUCH more, which violates the spec, and
>    sometimes works, and sometimes doesn't).

The behavior persists with just an optical USB mouse, which can't possibly be 
sucking more than a few dozen mills.  (I hope.)

In the discussion link you sent me, they discuss the controller disabling the 
port due to excessive current draw...would it re-enable the port when I 
simply un/replug the mouse?  Normally I'd expect that to require a reboot.
(The mouse does come back when I remove it and reinsert it, and generally X 
doesn't even notice.)

The KT133 discussion suggests it's a hardware problem, which wouldn't surprise 
me...this particular mobo is a very early Athlon board, and the chipset may 
be buggy.

-Cliff L. Biffle

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