@pawel thanks for your tips. But it doesn't seem to work for me. Now after waking up from STR, my fan is high up again $ uname -r 2.6.27-14-generic $ cat /proc/acpi/fan/*/state status: off status: off status: off status: off status: on
After a few trials, it seems to me that the argument "3" turns off the corresponding fan while "0" turns them on. It turns out the naughty fan is FAN0, not FAN4. $ echo 0 | sudo tee /proc/acpi/fan/FAN0/state 0 And then the noise vanished. I wonder if my FAN4 is nonexistent, coz having it on doesn't yield much noise... The script in resume.d seems to be just doing the opposite: upon resuming, it turns each fan on right after turning them off. The effect is funny though, contrary to its intension, only FAN4 remains "on" when I inspect the fan states. Anyone give some pointers or shed more lights on this? -- Laptop Fan always on after resume from suspend to RAM https://bugs.launchpad.net/bugs/77370 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs