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I have a HP G62 with i5 processor, 4G Ram and ATI HD 5470. Started using Ubuntu 4 months ago, first was 11.10 and after 12.04. Everything worked perfectly until some weeks ago when my cpu fan became "crazy" and I mean by this always on, noise and overheating problems, for sure if I put a glass with water in some minutes will boil (and I mean it). There can be a bug in the last kernel or any other Ubuntu's official update?

And by the way

  1. CPU fan is cleaned like a new born baby;

  2. Used jupiter and all those stuff (lm-sensor, psensor...) - same problem;

  3. Installing ATI drivers don't work very well. (interface laggy as HD 5470 isn't supported by Ubuntu) and I can't even open ATI Catalyst (error when I try to open it), more than this I always used open source drivers and as I said, worked perfectly (3d, effects).

Right now I'm back to Windows and everything is working perfectly but my main problem is that I get used with Ubuntu and kinda weird to use windows again. I want back my nice and almost perfect Ubuntu.

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Probably, does using another kernel, old or new resolves your issue? – Uri Herrera Jul 1 '12 at 5:15
As I said, previous versions worked flawless. Anyway, I'll try again Ubuntu when they will update kernel version. – Dave Jul 1 '12 at 13:17
You can try a newer version at the mainline ppa instead of waiting until they show up in the update manager, but why don't you in the meantime uninstall the newest kernel and just leave the one that works . – Uri Herrera Jul 1 '12 at 18:20
Sorry, it's your ATI graphics card. Disable it in BIOS and use the Intel HD Graphics (works flawlessly in Ubuntu). If you don't have that option...think about getting a laptop from a manufacturer that has better support for Linux next time. (e.g. Lenovo). – izx Jul 9 '12 at 2:25
As far as I know, it may be possible with vgaswitcheroo (read the AskUbuntu questions Google returns), but I don't think many have been successful. One solution is to install the FGLRX binary drivers, but you said you didn't want that. – izx Jul 9 '12 at 2:41

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