[haiku-bugs] Re: [Haiku] #6727: Asus A7N8X-X: USB mouse CPU drain...

  • From: "Luposian" <trac@xxxxxxxxxxxx>
  • Date: Sun, 23 Jan 2011 01:18:19 -0000

#6727: Asus A7N8X-X: USB mouse CPU drain...
  Reporter:  Luposian   |        Owner:  nobody
      Type:  bug        |       Status:  new
  Priority:  normal     |    Milestone:  R1
 Component:  - General  |      Version:  R1/alpha2
Resolution:             |     Keywords:
Blocked By:             |  Has a Patch:  0
  Platform:  x86        |     Blocking:

Comment (by Luposian):

 Ok, I finally got around to testing out a different USB mouse.  It's a USB
 Kensington ball mouse.  When I plugged it in, after unplugging the
 Logitech Trackman Marble, I was shocked to see I went from using 25% CPU
 (Pulse shows 20 "bars", so 5 bars (which were lit green) = 25%), to less
 than 1% (Pulse showed nothing, but the little CPU indicator at the leaf
 menu/task bar was blipping a single little purple line).

 But that wasn't what shocked me most.  No, the BIG surprise came when I
 unplugged the Kensington and plugged the Logitech back in... it was
 showing the SAME amount of CPU usage... which was next to nothing!

 So, as I understand it, this is simply a USB initialization thing... if
 you unplug the USB mouse/trackball and plug it back in, the CPU usage
 issue goes away!  I will reboot and test this theory (with just the

Ticket URL: <http://dev.haiku-os.org/ticket/6727#comment:6>
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