A small addendum: The machine is running too hot with both the Hardy kernel (2.6.24) and the Gutsy one (2.6.22). The difference between the 2.6.24 kernel and the 2.6.22 kernel for me seems simply to be that the 2.6.22 kernel is able to reduce performance sufficiently to avoid the machine overheat, while the 2.6.24 allows it to get too hot. When the machine starts getting too hot (88 degrees), everything starts to slow down a lot (much more than just throttling cpu speed would allow). Scrolling starts to stutter, clicking a menu item can take seconds to respond and so on. On 2.6 24, of course, the machine jsut freezes completely.
One part cause for this turns out to be the wifi. Just having wifi enabled (via the physical switch on the machine) raises operating temperature from 72-80 degrees to 85-88 degrees (and stutter) on 2.6.22 and 85-freeze on 2.6.24. Note that I don't have to actually be using the wifi; just enabling the unit is enough. Specifically, the CPU activity does not increase in any way. This did not happen under Gutsy. The low-level drivers are kernel- specific so I suspect they aren't to blame; I suspect perhaps NetworkManager is doing something strange. But, though I can't confirm this, the machine seems to be running hotter than it did under Gutsy even with the 2.6.22 kernel and wifi turned off, so there may be other causes of this behaviour too. -- Hardy kernel causes overheating https://bugs.launchpad.net/bugs/223081 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
