Optical mouse laser always on


J

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?
 
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G

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.
 
J

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
 
J

JAD

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

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"!
 
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J

JAD

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