Thank you for providing a patch, and making Ubuntu better. Can you provide some information on the status of the patch with regards to getting it merged upstream? Has it been sent upstream, what sort of feedback has it received, is it getting applied to a subsystem maintainer's tree, etc?
-- 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/1598312 Title: Cannot scale AMD Turion CPU frequency. It runs on lowest 800MHz Status in linux package in Ubuntu: Confirmed Status in linux-lts-xenial package in Ubuntu: Confirmed Bug description: http://askubuntu.com/questions/789096/cant-scale-frequencies-of-amd- turion-cpu-it-always-jumps-to-lowest The CPU does not scale frequency on kernel "4.2.0-41-generic #48~14.04.1-Ubuntu SMP Fri Jun 24 17:09:15". The notebook behaves very slow despite on Windows Vista it works great. Cpufreq-info program shows that there is a limit on the frequency setting between 800MHz and 800MHz. I tried to impose the frequency by setting the "performance policy" or by setting the limit in /etc/default/cpufrequency, but it does not work. Next I tried to check the BIOS limits, because there are some suggestions that some battery/power supply problems could cause the BIOS to set the limits on CPU freq but it is not there. The CPU freq scaling works good on 'linux-image-4.1.26-040126-generic' kernel. It does not work on this kernel "4.2.0-41-generic" and "linux- headers-4.2.0-38-generic". The current workaround is to switch off the ACPI by "acpi=off" boot parameter. Using this setting the CPU frequency scaling works but it makes the system single CPU core only. Hardware: HP Compaq 6715B notebook with AMD Turion CPU TL-58 and powernow-k8 cpufreq driver. I've heard some posts that on others HP notebooks there are similar problems with the freq scaling. $ cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to cpuf...@vger.kernel.org, please. analyzing CPU 0: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 1 maximum transition latency: 109 us. hardware limits: 800 MHz - 1.90 GHz available frequency steps: 1.90 GHz, 1.80 GHz, 1.60 GHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 800 MHz and 800 MHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 800 MHz. cpufreq stats: 1.90 GHz:0,07%, 1.80 GHz:0,00%, 1.60 GHz:0,00%, 800 MHz:99,93% (1) analyzing CPU 1: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 1 maximum transition latency: 109 us. hardware limits: 800 MHz - 1.90 GHz available frequency steps: 1.90 GHz, 1.80 GHz, 1.60 GHz, 800 MHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 800 MHz and 800 MHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 800 MHz. cpufreq stats: 1.90 GHz:0,07%, 1.80 GHz:0,00%, 1.60 GHz:0,00%, 800 MHz:99,93% (1) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-4.2.0-41-generic 4.2.0-41.48~14.04.1 ProcVersionSignature: Ubuntu 4.2.0-41.48~14.04.1-generic 4.2.8-ckt11 Uname: Linux 4.2.0-41-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 CurrentDesktop: KDE Date: Fri Jul 1 23:49:34 2016 InstallationDate: Installed on 2016-04-08 (83 days ago) InstallationMedia: Kubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1) SourcePackage: linux-lts-wily UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598312/+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
