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When you use performance mode the CPU frequencies will always be as high as is reasonable. Note that the processor itself can backoff the CPU frequency under no or extremely light load conditions, regardless of what it is told to do via the frequency driver. There is no CPU frequency verses load response more aggressive than performance mode. Disclaimer: ...


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This is what the CPU governor does - observe the usage and adjust frequency accordingly. CPU frequency scaling is a pretty standard technique for power saving. There are tools to manage frequency scaling, cpupower from linux-tools-common is one such. To look at current governor settings, you can inspect the folders in /sys/devices/system/cpu/cpu*/cpufreq. ...


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I have the same problem on my Dell E7440 running Ubuntu 14.04 / Linux Mint 17.1 with kernel 3.19 and latest firmware blobs. After pairing a bluetooth device, wifi becomes unusable. But both bluetooth and wifi work without problems when the other one is disabled. https://wireless.wiki.kernel.org/en/users/Drivers/iwlwifi recommends to disable bluetooth ...


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I don't know what laptop you have, but I suspect your issue has nothing to do with the graphics drivers. Ubuntu 14.04 already comes with Intel graphics drivers. Intel develops these drivers in the open and in the upstream kernel and Xorg trees. The system freezing when trying to encode or transcode a movie, is likely due to simply overloading the system. ...


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As already stated characters are missing all over the place. The reason seems to be an outdated Intel Graphics driver in Ubuntu 14.04 - which is not compatible with the 5th generation of Intel CPU/GPU. As noticed and further described in this link This link describes how the "Intel Graphics Installer for Linux" starts. But unfortunately it does not succeed. ...



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