Comment 6 for bug 364639
Revision history for this message
| Johannes Hessellund (osos) wrote [Regression] vblank interrupts increase during 'DPMS off' | #6 |
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bbfa235
(Get the code!)
Binary package hint: xserver-
Using freshly updated Jaunty.
Radeon driver generates more interrupts during screenblanks ('xset dpms force off') than not.
Measuring with powertop 1.11 my hardware generates approx 10 wakeups/s .
When issuing the 'xset dpms force off' wakeups increases to approx 60/s.
This seems to be radeon driver generating vblank interrupts during dpms off. Thus preventing the CPU to enter C3-C4 state.
=> increased powerconsumption during dpms!
Using repos opensource radeon driver.
Hardware: Thinkpad T42, Radeon 7500.