** Description changed:
Binary package hint: xserver-xorg-video-ati
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.
+ Using repos opensource radeon driver. Compiz disabled
Hardware: Thinkpad T42, Radeon 7500.
For more info read dri-devel list:
http://www.mail-archive.com/[email protected]/msg37843.html
Not sure if any solution was found.
+
+
+ Reproduce:
+ 1. Disable compiz
+ 2. On terminal: sudo powertop
+ 3. On another terminal: xset dpms force off
--
[Regression] vblank interrupts increase during 'DPMS off'
https://bugs.launchpad.net/bugs/364639
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
