I downloaded linux-source-2.6.20, patched the kernel with http://bugzilla.kernel.org/attachment.cgi?id=9885&action=view (for working fans)
and http://bugzilla.kernel.org/attachment.cgi?id=10022&action=view (for working fans after resume) and rebuilt the kernel. The result was that pre-suspend, the fans worked as they should so the first patch helped. The computer behaved strangely after resume so it was hard to tell if the second patch worked as it should. 2.6.17 and earlier Ubuntu kernels work fine with suspend to both ram and disk (modulo the fan problem) so it appears that there's been some suspend regressions in the 2.6.20 Ubuntu kernels, unrelated to this particular bug. I noticed Ben Collins saying in IRC that he'd dropped quite a few ACPI patches for the newer kernels, so that may be the cause. -- 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
