Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: linux (Ubuntu) Status: New => Confirmed
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/441169 Title: CPU Scaling no longer supported on Single core 1.7Ghz Centrino Status in linux package in Ubuntu: Incomplete Bug description: Binary package hint: libcpufreq0 Hi, I've noticed slow performance. My details are similar to the forum post "Single core 1.7Ghz Centrino stuck at 600MHz?" from 12th May 2009. The post has no answer or further reference so I raised a bug here and I'll cross reference it on the Forum. My processor is stuck at 798MHz and on adding the cpufreq-applet I was treated to an error, "Warning CPU Frequency Scaling not supported". I have a Dell Inspiron 9300. Regards, Richard Here is the original post: -------------------------------- I'm been experiencing quite a slow performance on Ubuntu, specially on flash videos, and finally I discovered the it was not xorg or firefox or the ati driver but rather the cpu is stuck at 600MHz according to /proc/cpuinfo. model name : Intel(R) Pentium(R) M processor 1.70GHz stepping : 6 cpu MHz : 600.012 I had been experiencing sudden burst in performance for a while, and now I'm guessing that all of a sudden the cpu just "breaks free" and goes to full power for absolutely no reason, without my intervention. I'm waiting for this to happen again, but I'm pretty sure this is the problem. I've been trying to fix it for a while but it's been quite difficult. I installed powernowd (success was reported here http://ubuntuforums.org/showthread.php?t=1134657), and running it says Please make sure that: - .... - That you have sysfs mounted /sys - That you have the core cpufreq and cpufreq-userspace modules loaded into your kernel Which I don't by checking lsmod | grep cpu, and no wonder, because according to something I read the new ubuntu kernel has the cpufreq modules built-in. But something is indeed failing because running ls /sys/devices/system/cpu/cpu0 reveals cpuidle crash_notes topology The frequency part is missing. Any input? Can I refer to any log for further info? Thx in advance, I would really like to fix this thing... O_o Last edited by Cenoforums; May 12th, 2009 at 04:14 PM.. Reason: reference post ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 ExecutablePath: /usr/lib/gnome-applets/cpufreq-applet Package: gnome-applets 2.26.1-0ubuntu1 ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-applets Uname: Linux 2.6.28-6-386 i686 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/441169/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp