Usb Mouse; Usb Power Management - Sun Microsystems Sun Blade 1000 Service Manual

On a workstation with multiple USB keyboards, if you unplug the console
keyboard, the next available USB keyboard does not become the console
keyboard. The next hot-plugged keyboard will become the console keyboard.
D.1.2

USB Mouse

The following USB mouse information is provided for your Type-6 USB mouse:
Multiple mice are not supported. The mice enumerate and are usable, but are not
plumbed as console mouse.
The first mouse probed at boot time becomes console mouse. This can potentially
cause confusion to customers if there are multiple mouse plugged in at boot time.
If you have a 3rd-party composite keyboard with PS/2 mouse, and it is the first
one to be probed, it will become the console mouse even if the PS/2 mouse is not
plugged in.
Note – Therefore if another USB mouse is plugged into the workstation it will not
work because the second mouse is not configured as the console mouse.
On a workstation with more than one USB mouse, if you unplug the console
mouse, the next available USB mouse doesn't become the console mouse. The
next hot-plugged mouse will become the console mouse.
Only a 2 or 3 button mouse is supported. A wheel on wheel mouse acts like a
plain button mouse. A mouse with more than 3 buttons, functions like a 3 button
mouse.
D.2

USB Power Management

USB power management is "leaf" first and then "bottoms-up". This means that all
leaf devices go into low-power mode first. Following that, the bottom-most hub goes
into low-power mode first, followed by hubs in the next upper level. This sequence
follows all the way to the top root hub.
Note – As a rule of thumb, the deeper the USB device tree, the poorer USB power
management becomes.
D-2 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002