cpufreq-selector, cpufreq-info reporting wrong max speed
- by dty
Hi,
I've just built a new machine with a Core i5-760 CPU. Max speed is 2.80GHz (turbo mode notwithstanding). I've also done a vanilla install of Ubuntu 10.10.
I've added the cpufreq-selector applet to the top panel, and its menus only allow me to select up to 2.39GHz. If I select the "performance" governor, it also shows 2.39GHz.
cpufreq-info reports:
$ cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 1.20 GHz - 2.39 GHz
available frequency steps: 2.39 GHz, 2.26 GHz, 2.13 GHz, 2.00 GHz, 1.86 GHz, 1.73 GHz, 1.60 GHz, 1.46 GHz, 1.33 GHz, 1.20 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 1.20 GHz and 2.39 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1.20 GHz.
cpufreq stats: 2.39 GHz:13.74%, 2.26 GHz:0.09%, 2.13 GHz:0.08%, 2.00 GHz:0.08%, 1.86 GHz:0.07%, 1.73 GHz:0.07%, 1.60 GHz:0.08%, 1.46 GHz:0.08%, 1.33 GHz:0.11%, 1.20 GHz:85.61% (15560)
[...CPUs 1-3 elided, but similar...]
Any idea how to get Ubuntu and the various tools to recognise this as a 2.80GHz processor? And ideally to report the actual speed when running in turbo mode too, but that's not critical.
Edit: I should probably add that the BIOS (& Windows) are quite happy that it's a 2.80GHz CPU.
Thanks.
