Created attachment 91191 [details] dmidecode info Description of problem: - Turbo core feature of my A6-4400M APU does not work. Only up to 2.7Ghz/core when I compile a kernel. On Windows, works so fine, CPU-Z up speed to 3.2Ghz/core. Version-Release number of selected component (if applicable): - kernel: 3.6.11-1.fc17.x86_64 How reproducible: 1º - Download kernel, kernel.org. 2º - Extract 3º - cd /..../linux-3.n 4º - make rpm or make -j3 Actual results: Only work maximum 2.7Ghz/core performance Expected results: - Works properly
Created attachment 91201 [details] cpuinfo
Upgraded kernel to 3.7.2-201.fc18.x86_64. Does not work.
Upgrade kernel to 3.7.2-204.fc18.x86_64 does not work. powernow-k8: this CPU is not supported anymore, using acpi-cpufreq instead. :/
Sorry I was wrong: Turbo core does work support, but I cannot how can use 3.2Ghz state. analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 4.0 us. hardware limits: 1.40 GHz - 2.70 GHz available frequency steps: 2.70 GHz, 2.40 GHz, 2.00 GHz, 1.70 GHz, 1.40 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.40 GHz and 2.70 GHz. The governor "performance" may decide which speed to use within this range. current CPU frequency is 2.70 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes Boost States: 2 Total States: 8 Pstate-Pb0: 3200MHz (boost state) Pstate-Pb1: 2900MHz (boost state) Pstate-P0: 2700MHz Pstate-P1: 2400MHz Pstate-P2: 2000MHz Pstate-P3: 1700MHz Pstate-P4: 1400MHz Pstate-P5: 900MHz
I can confirm this problem. I have a A10-4600m with CPU of 2300Mhz and turbo core max of 3200Mhz With Windows works fine this, but cpufreq-info just reports: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 2 3 CPUs which need to have their frequency coordinated by software: 3 maximum transition latency: 4.0 us. hardware limits: 1.40 GHz - 2.30 GHz available frequency steps: 2.30 GHz, 2.00 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz available cpufreq governors: conservative, ondemand, userspace, powersave, performance current policy: frequency should be within 1.40 GHz and 2.30 GHz. The governor "ondemand" may decide which speed to use within this range. current CPU frequency is 1.40 GHz (asserted by call to hardware). cpufreq stats: 2.30 GHz:7.99%, 2.00 GHz:0.05%, 1.80 GHz:0.06%, 1.60 GHz:0.09%, 1.40 GHz:91.82% (1279) Using Ubuntu with kernel 3.7.0-7-generic SMP, powernow reported as unsupported on dmesg.
Do you use the AMD "fglrx" graphics driver? If not, please consider https://bugzilla.kernel.org/show_bug.cgi?id=81021