Possible fix: An updated version of the pcc-acpi module is available at: http://www.netlab.cs.tsukuba.ac.jp/~yokota/izumi/panasonic_acpi/
Compiling and (manually) installing the above seems to have taken care of the problem on my machine (R4); /proc/acpi/pcc exists, and hotkeys are functional again. Furthermore, my machine properly resumes from sleep - though I hadn't tried sleep in a while and thus do not know if it is related. -- Panasonic R4: hotkeys and s3 don't work in edgy https://launchpad.net/bugs/62620 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs