> I have the same noise. Great! (not for the problem, but finally someone can confirm me this issue).
> It's very low and I think it come near from the subwoofer. Yes, me too. Probably it's the wifi+bluetooth card. So please, when you have time, just copy and paste what you just said in this kernel bug report: https://bugzilla.kernel.org/show_bug.cgi?id=25532 They are the only guys that can solve it (i.e. backlight was solved by them). In my opinion there is something wrong, for our machines, in the btusb module driver, something like the bluetooth radio frequency refresh rate, etc... This issue is not present on the default win7, so naturally it must be btusb bug. About the backlight when unplug, on KDE 4.6 I don't have this issue, however I can modify these options from the system power control page. ** Bug watch added: Linux Kernel Bug Tracker #25532 http://bugzilla.kernel.org/show_bug.cgi?id=25532 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/613963 Title: Kubuntu on HP Envy 17 - 1010el -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
