Comment 33 for bug 280805

Sadly, having had a few days experience with this, I must now report that the `solution' is not perfect. If I hibernate or suspend the laptop, when it wakes up the fan does its old on for a while, off for a second behaviour. I notice though that i8kmon shows 0 degrees for the temp after the wakeup, so I suspect it is no longer controlling the fan, although running i8kfan works to turn it off (for about a second).

In desperation I switched to the old nvidia driver, then removed it completely (I'm now running the open source `nv' driver) -- but the bad fan behaviour remains! So I suspect the A13, or perhaps specifically the A12, BIOS update is partly responsible.

Another theory being propounded is that the `powermgmt' package in the new Ubuntu is causing problems. I shall investigate that path next. I'm still sceptical that Dell/Nvidia would be dumb enough to force such behaviour on users, but I've been wrong before!

This is all rather annoying and confusing.

gdm