Public bug reported: Binary package hint: linux-image-2.6.27-11-generic
This bug relates to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/288592 but I as advised to open a new bug report. I have an Xeon processor (X3360) on an P35 motherboard. I'm running ubuntu-8.10-desktop-amd64. The out-of- the-box kernel does not allow me to use CPU scaling to alter my processor's speed. This is in contrast to other LINUX distros in which CPU scaling works just fine without altering any BIOS settings (Debian /Lenny-amd64, Arch/Overlord-amd64). When I log into Gnome, the CPU Frequency Scaling Monitor tells me, "CPU frequency scaling unsupported. You will not be able to modify the frequency of your machine. Your machine may be misconfigured or not have hardware support for CPU frequency scaling." It seems as though the problem lies (in part) with the inability to load the acpi-cpufreq kernel module. It is physically present: $ ls -lh /lib/modules/2.6.27-11-generic/kernel/arch/x86/kernel/cpu/cpufreq total 64K -rw-r--r-- 1 root root 25K 2009-01-29 15:52 acpi-cpufreq.ko -rw-r--r-- 1 root root 35K 2009-01-29 15:52 powernow-k8.ko But I cannot get the kernel to load the module: # modprobe acpi-cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.27-11-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device I am able to compile my own kernel (2.6.27.10 from kernel.org) making some changes to the 2.6.27-11-generic config file (basically disabling some debugging options which cause my debs to be HUGE if I go with the standard config-2.6.27-11-generic), and when I boot into it, CPU Scaling magically works with no other changes on my part. FYI, here is the guide I used to compile my own kernel: http://technowizah.com/2005/12/debian-how-to-custom-kernel-compile.html I will say that the dmesg gives a ton of ACPI Errors when I boot into the stock kernel. This is in stark contrast to the custom compiled kernel I'm using wherein there are not ACPI Errors at all and CPU Scaling works just fine. I'm trying to attach the minimum files required 1) uname -a > uname-a.log, 2) cat /proc/version_signature > version.log, 3) dmesg > dmesg.log, 4) sudo lspci -vnvn > lspci-vnvn.log, but this webform only allows me to make a single attachment. I'm hoping I will be presented with another page allowing for additional attachments, if not I will attempt to post them as comments. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: acpi cpu cpufreq frequency scaling -- Ubuntu 2.6.27-11.27-generic no cpuscaling-Error inserting acpi_cpufreq https://bugs.launchpad.net/bugs/332846 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
