[ltp] CMOS Battery and Dodgy Mouse?

[Rob Smith]

----- Original Message -----
From: "Huntress Gary B NPRI" <HuntressGB@Npt.NUWC.Navy.Mil>
To: <linux-thinkpad@linux-thinkpad.org>
Sent: Sunday, July 20, 2003 9:56 AM
Subject: [ltp] CMOS Battery and Dodgy Mouse?


>
> My daughter was using my 600e today and found that the pointer was jumpy
and erratic.  I ended up having to ctrl-alt-backspace to terminate X and
then I began to investigate.
>
> The problem with the mouse persisted in bash, so I restarted gpm with the
same result.
>
> I rebooted and went into seutp, ran the system test and received the error
regarding "low backup battery" and now I have a new battery on order.
>
> Now the interesting thing is, I removed the backup battery and rebooted.
Of course I got an error and was kicked into the bios setup....but here is
the odd thing (to me):   The mouse is *still* jumpy and erratic in the BIOS
setup with no (apparently bad) battery.
>
> Am I chasing two problems?  And if so, what else might cause a jumpy mouse
in BIOS?
>
> Regards,
>
> Gary H.
> --


Remember that you are receiving the warning because the system sensed a low
voltage condition from the "backup battery" or more commonly referred to as
the "CMOS battery". By disconnecting it, you just dropped the voltage signal
down to 0.0 volts. Of course, seeing that this is more of the same thing to
the machine's electronic circuitry, you are going to get more of the same
result. I hope that this makes sense to you.

Rob Smith