I booted back on an "old" kernel 2.6.20-15 and my cpu freq scaling was back. However I still have the same warning in dmesg about ACPI (so this is another problem) but powernowd is now running just fine. Hence, the problem was definitely introduced in 2.6.22 kernel.
I'll upload my dmesg with 2.6.20 to see the difference. ** Attachment added: "dmesg on working kernel" http://launchpadlibrarian.net/8805712/dmesg-2.6.20.txt -- [GUTSY] cpu freq scaling not working anymore https://bugs.launchpad.net/bugs/132271 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs