Comment 19 for bug 449196

well, it was a bit of a stab in the dark, but nothing else i'd tried worked.

it seems that if i turn off compositing on one of the two sessions the cpu issue no longer crops up. the jury's still out a bit, but it's been a while - i let it run over night that way, and prior to this, the cpu issue had gotten pretty constant and painful - to the point of kicking in fans and tripling the noise from my box. i could literally hear myself switch from one vt to the other - for a moment, anyway. then it'd crank right back up on the xorg that wasn't currently visible.

this is using kde. i don't know if it applies in any other windowing environment - haven't tried it.