I found it in debian-user at lists.debian.org from Damon L. Chesser and I had verified that if you close the gnome system monitor there aren't messages anymore:
"Well, it was the gnome app system monitor, but only the Network activity indicator. I noticed that when booting into gui, the F1 term did not start the errors until some way into the desktop (in this case gnome). I never noticed the errors before becuse I ran XFCE4. I started closing toolbar toys one at a time until the messages went away. It stopped when I removed system monitor, but came back after I put it back AND enabled network monitoring. It is 100% reproducible on demand. Ergo, Gnome apps>system monitor>network monitoring." -- pci_set_power_state errors in tty0 console https://launchpad.net/bugs/66963 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
