Sure. it's from comment #69 in http://bugzilla.kernel.org/show_bug.cgi?id=7122 . I've done some more testing and that patch doesn't seem to help anyway. To sum up, the situation is this:
With Ubuntu kernels 2.6.17 and earlier: * Before suspend, the fans come on as they should * Suspend to both ram and disk works * After suspend, usually (but not always) the fans get "stuck" at whichever speed they were running just before suspend. With Ubuntu 2.6.20 kernels: * Before suspend, the fans only come on if I run a script that does "acpi -t" every few seconds. * Suspend to ram does not work. Most often, the fans come on full blast when I resume and the display never returns. Sometimes the system does come up but it's very unstable and X soon crashes. * Suspend to disk works, but the fans have the same problem as in 2.6.17. With my patched Ubuntu 2.6.20 kernel: * Before suspend, the fans work as they should. * Suspend to ram has the same problem as the unpatched kernel. * Suspend to disk works, but the fans behave as with the unpatched kernel, i.e. the second patch does not seem to help. I'll do some more testing. I know Matthew Garrett has an NX6125, maybe he can help. -- Regression: Fan does not come on due to ACPI problems https://launchpad.net/bugs/75398 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs