Either that, or the battery is going bad - the mouse is drawing more
current than the battery can supply.
On Feb 13, 2014 9:13 AM, "Alan McKinnon" <alan.mckinnon@gmail.com> wrote:

> On 13/02/2014 19:08, Andrew Lowe wrote:
> > Hi all,
> >       I'm running a 64 bit KDE setup in a laptop. In the last few days,
> the
> > mouse has become erratic and in fact dies after a bit of usage.
> >
> >       When KDE fires up, and I'm presented with the login dialogue, the
> mouse
> > will work for a few seconds, up to 30 say, then it freezes. If I get in
> > quick and enter the username/password, the mouse pointer will change
> > from the black login pointer to a slightly different shaped white
> > pointer and then freeze. The login process will continue and present me
> > with my environment, but no mouse. A Cntl-Alt-Del will bring up the Log
> > out/shutdown/restart dialogue and I can use the keyboard to select
> > either shutdown or restart.
> >
> >       The thing that is "freaky" is that this happens if the laptop is
> > running from batteries. If I have the machine plugged into the wall,
> > this problem does not exist.
> >
> >       Has anyone come across a problem like this? Any thoughts, greatly
> > appreciated.
>
> Check that you don't have usb power saving enabled for all devices when
> on battery.
>
> I've run into this before and it's enough to drive one nuts :-) My
> previous laptop was especially bad - super keen to shut down the usb
> port after 30 seconds of inactivity and very very loathe to getting
> around to waking it up again.
>
> Powerdevil has gone through some changes over the past period, there
> might be a new default in place that you aren't aware of yet.
>
> powertop is a very useful tool for info about what power saving features
> are active.
>
>
> --
> Alan McKinnon
> alan.mckinnon@gmail.com
>
>
>