I found the reason for the above problem: It was the result of running a kernel requiring PAE on a cpu without PAE support, which otherwise doesn't seem to have any adverse effects (see bug #930447), but BIOS calls obviously do not work properly. Installing the non-PAE kernel solved the problem.
I post this in case anybody else needing acerhk has a Pentium M processor … -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/555828 Title: Regression: flag "-pg" on /usr/src/$(uname -r)/Makefile prevents acerhk-source package from compiling. Computer becomes unusable because there is no equivalent to acerhk in the kernel. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acerhk/+bug/555828/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs