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apport-collect 1452421 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1452421 Title: ubuntu 15.04 overheats Status in linux package in Ubuntu: Incomplete Bug description: On 2015-04-26 I upgraded to Ubuntu 15.04 (from 14.10). Since then, my notebook (HP envy dv6) fan is nearly always on, and the notebook switched off several times, probably due to overheating. Each time I was working with Firefox; watching the "livestream" of www.tagesschau.de seems to be a good way of reproducing the problem. Going back to the 3.16.0-31 kernel (still offered by grub) seems to circumvent the problem. When I boot 3.16 the fan runs only occasionally. My first 15.04 kernel was 3.19.0-15, today I got -16 but the problem is the same. Before the machine switches off (it does not shut down Linux but just goes out) "top" shows me eight instances of "kidle_inject", obviously desperately but hopelessly trying to keep processor load down. Under the 3.19 kernel the "plugin-container" process goes to loads of more than 100 % (on a four-core box), under 3.16 it never goes beyond 60 %. Note that between the "overheat" and the "normal" scenario I change only the kernel in the boot menu, all other binaries are the same (15.04). Especially, it's the same firefox. I fear that within a couple of weeks more kernel versions will arrive at my system and eventually push the working 3.16 kernel out of my grub menu, and then I shall have no way left of running my system for more than 20 or 30 minutes. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: kernel-common (not installed) ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8 Uname: Linux 3.16.0-34-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Wed May 6 20:57:39 2015 InstallationDate: Installed on 2014-06-09 (331 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) SourcePackage: kernel-package UpgradeStatus: Upgraded to vivid on 2015-04-24 (12 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1452421/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
