Hidden CPU load with bluetooth off/idle.
Posted: Fri Mar 21, 2008 2:32 am
The latest version of RMclock fully supports santa rosa now, but i'm getting strange feedback from it.
In any cpu mode, OS load levels are normal when idle. 0-2%.
but it has a "true" cpu load thats pegged at 80% all the time, UNTIL a bluetooth device is connected and functional. such as a mouse.
When the mouse goes into power saving, cpu internal load is right back to 80%. touch it and the load falls to normal sub 10% levels.
This is both with hardware switch off and on.
CPU temperature is stable 41-43C no matter what at 800mhz.
if i disable the thinkpad bluetooth device with the windows bt config it also does it.
Is this a sign of a flawed driver or bt stack?
/edit/
also see this, also with modern bluetooth.
http://forum.tabletpcreview.com/showthread.php?t=13582
In any cpu mode, OS load levels are normal when idle. 0-2%.
but it has a "true" cpu load thats pegged at 80% all the time, UNTIL a bluetooth device is connected and functional. such as a mouse.
When the mouse goes into power saving, cpu internal load is right back to 80%. touch it and the load falls to normal sub 10% levels.
This is both with hardware switch off and on.
CPU temperature is stable 41-43C no matter what at 800mhz.
if i disable the thinkpad bluetooth device with the windows bt config it also does it.
Is this a sign of a flawed driver or bt stack?
/edit/
also see this, also with modern bluetooth.
http://forum.tabletpcreview.com/showthread.php?t=13582