Re: umass not working and other USB troubles

From: Andrea Venturoli <ml_at_netfence.it>
Date: Mon, 26 Jan 2026 17:38:20 UTC
On 1/26/26 18:20, nahn03 wrote:
> Hello:
> 
> One idea that may work is making sure the USB devices are unplugged, then issue the command:
> 
> sudo tail -f /var/log/messages
> 
> Then plug a single device back into a USB port and please report back what the log says.

Well.

Plugging an HD or a key when the UPS is connected just logs nothing (as 
I said).
Plugging an HD or a key when the UPS and a keyboard are connected shows 
nothing.
Plugging a keyboard when the UPS is connected logs nothing (keyboard 
only works if connected at boot).
Plugging the UPS when nothing else is connected logs nothing (again, it 
only works if connected at boot).

All the above were tried when the UPS (and eventually the keyboard) were 
plugged in initially (at boot).
I can try to boot without nothing, if needed, but I won't have the 
chance to be physically at this site any time soon.

  bye & Thanks
	av.