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I'm very new to Linux and Ubuntu. I did install Ubuntu 14.04 on my Vaio laptop and all was working fine. Yesterday, I did the last update and since then my fan is working all the time. CPU temperature is around 75-80 degrees celcius. I also saw that some processes use a lot of my CPU:

CPU usage

What can I do to solve the problem?

Thanks!

  • Which graphics driver are you using? – Tobias Nov 11 '15 at 14:57
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The kernel team wiki contains a page that helps diagnose power consumption issues: https://wiki.ubuntu.com/Kernel/PowerManagement/IdentifyingIssues

In your example, init is really way too busy for some reason, which looks just plain wrong. If this persists and does not change, then one should file a bug, as init should be using only a small slice of CPU.

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Okay I found the problem. Yesterday I disabled ipv6 following instructions on a post and they were doing it by modifying the init file. It seems it was not a good idea. I put back the init file as it was and everything is working normally.

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