[ltp] Alarming boot messages...

[Richard]

> I'm currently running Vector Linux 5.9 beta, which uses a 2.6.22.9 kernel. 
> I'm loading thinkpad_acpi using /etc/rc.d/rc.modules.
>
> On a few occasions, during boot, I get a number of messages like this:
>
> hub 1-0:1.0: over-current change on port 3
>

What that means is the USB hub is reporting excess current draw from 
connected devices. In general, a USB port may provide only 500mA of 
current, and connected devices are expected to be "well behaved"*. If you 
use an unpowered hub, then each branch can only draw 100mA.

lsusb -v      will tell you more.


I'm guessing you have too many connected USB devices, and inadequate 
power?

Regards,

Richard



* Each device is allowed to draw 100mA with no interaction. If it wants 
more (up to 500mA), it must request it from the hub in software, and only 
take what is granted. Badly behaved devices (eg USB coffee-cup warmers) 
don't conform to the spec.