Public bug reported: This seems to be a problem on a number of Fujitsu Siemens Amilo models and also on other distros, so it's not Ubuntu specific. At least M3438G (which I have) M4438, 7440G, M1439G and probably more[1].
It was discussed on the kernel bugzilla[2] but was finally rejected as not an ACPI bug. However, several of these models also carry a Linux-based media system called PowerCinema InstantOn, which has a working fan that adjusts after temperature. The company has a lot of source code available under GPL and similar on their homepage[3], but noone seems to know if there is a solution there. I don't really expect any solution to this in the short term, but it is something that should be fixed sooner or later for proper laptop support - having it go full speed at all times affect both battery life, sound levels and the overall lifetime of the fan/computer. 1. http://www.amilo-forum.com/topic,46,-Amilo-M1439G-Fan-Problem.html 2. http://bugzilla.kernel.org/show_bug.cgi?id=5670 3. http://www.cyberlink.com/english/products/powercinema/pcm-linux/pcmlinuxgpl.jsp ** Affects: Ubuntu Importance: Untriaged Status: Unconfirmed ** Tags added: fan laptop -- Fan spins at full speed all the time on various Fujitsu Siemens Amilos https://launchpad.net/bugs/57617 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
