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Linux Kernel Suffering Power Management Regression?
An anonymous reader writes "It appears that there's a big power management regression in the Linux kernel for the 2.6.38 and 2.6.39 development releases, including the kernel to ship with Ubuntu 11.04 next week. It's reportedly causing a 10~30% increase in power consumption on many laptop computers."
Well, what Linus is focused on is breaking user code - if it worked in a released kernel, you will not break it in any future kernel. I don't think there's any strict rule that performance must always be better or power consumption lower. Particularly if you're not doing something "right" and have to add additional checks/locks/synchronization for corner cases that can slow you down, they generally value correctness over performance. That's the case in many of Phoronix' sensationalist news, a development release is very fast but when you make it work 'right' the performance is no longer that impressive. That stuff will happen as close to the bleeding edge as most of the things they report on are. Of course, they do find real regressions too but it's easy to get the wrong impression...
Live today, because you never know what tomorrow brings
And I've just noticed the pun. Somebody mod me "too slow on the uptake".
vista came on this laptop. there are NO xp drivers.
There are actually entire lines of computers that came with Vista but were too slow to actually run either it or Windows 7 properly, and at the same time are too new for anyone to have made XP drivers. Like half the computers sold with Vista before 2009 or so.
Never had any problems running Ubuntu on them though.