Optical mouse laser always on

[John A]

I have noticed that the laser is always glowing on my logitech optical mouse
on my newly built system with a Shuttle AN35N Ultra/AMD mainboard/CPU. I
have a Gateway system Intel/Pentium mainboard/CPU with the same optical
mouse and when the system is powerred off, the laser is turned off. I check
the BIOS settings and made sure that there was not power-on stuff related to
the mouse enabled. I also looked at the settings for the mouse driver and
saw nothing related to this. Is this normal behavior?

 

[Gary Tait]

Whereas On Mon, 22 Sep 2003 08:34:38 -0500, "John A"

I have noticed that the laser is always glowing on my logitech optical mouse
on my newly built system with a Shuttle AN35N Ultra/AMD mainboard/CPU. I
have a Gateway system Intel/Pentium mainboard/CPU with the same optical
mouse and when the system is powerred off, the laser is turned off. I check
the BIOS settings and made sure that there was not power-on stuff related to
the mouse enabled. I also looked at the settings for the mouse driver and
saw nothing related to this. Is this normal behavior?

It might be. See if there is a jumper to power the mouse poert from
switched or continuous.

FWIW, I have a Microsoft wheel mouse, and it's laser is turned on and
off by the driver.

 

[John]

My mouse is also always powered up - with three different motherboards.
It gets power from the "Keep Alive" voltage, which is always present as long
as your system is plugged in.
Don't worry, it's normal.

John

 

[JAD]

its given power so that it can 'wake' the system from standby...and things like that.

 

[John A]

After further investigation, it appears this is "working as designed". On
motherboards supporting mouse power-on , power is supplied to the mouse all
the times. I have found mention of at least one motherboard, ASUS, that has
a jumper that can be set to change the power supply to the mouse from
continuous to switched. Just disabling the mouse power-on function in the
BIOS doesn't cause the supply to be switched, it just prevents the power-on
from occurring. So, the bottom line is that I have a new "night-light"!

 

[JAD]

flickering night light/ at least thats what my optical freedom does.