What do these messages in syslog mean (stops my trackball working)?

Gene Heskett gheskett at wdtv.com
Sat Oct 12 08:35:00 UTC 2013

On Saturday 12 October 2013 04:30:27 Colin Law did opine:

> On 11 October 2013 11:32, Chris Green <cl at isbd.net> wrote:
> > I have a Logitech wireless trackball that I use with my Acer Aspire
> > netbook running Xubuntu 12.10.  It works for quite a while (random
> > amounts of time) and then stops, the following messages appear in
> > syslog when it stops:-
> > 
> >     Oct 11 11:24:06 acer-aspire kernel: [ 7812.377726] uhci_hcd
> >     0000:00:1d.1: >host controller process error, something bad
> >     happened! Oct 11 11:24:06 acer-aspire kernel: [ 7812.377751]
> >     uhci_hcd 0000:00:1d.1: >host controller halted, very bad! Oct 11
> >     11:24:06 acer-aspire kernel: [ 7812.377781] uhci_hcd
> >     0000:00:1d.1: >HC died; cleaning up Oct 11 11:24:06 acer-aspire
> >     kernel: [ 7812.378030] usb 3-1: >USB disconnect, device number 2
> > 
> > An identical Logical trackball works perfectly with Xubuntu 12.10 on
> > my desktop machine.
> I would initially suspect a hardware fault.  Swap the trackballs
> between the machines (including the receivers).  That will tell you
> whether it is the machine or the trackball that is faulty.  Also try
> different USB ports to see if it is a fault with one of the ports.
> Colin

I wonder if this is somehow connected to a problem I am having with an MS 
mouse with the touchpad scroll wheel. Function of scroll is quite 
unpredictable, and at times quits working altogether, or causes a sideways 
scroll when my hand isn't touching the mouse but pick up the mouse turn it 
over, turn its switch off for a couple seconds, turn it on and its back to 
its usual spastic self.  For 2, maybe 3 or 4 days.

Cheers, Gene
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