On Wed, Dec 23, 2009 at 10:48:22AM -0000, Gus wrote:
> Now, I realise I'm running a newer kernel to that from before, so it's not a
> like-for-like comparison, but I still think it's likely that guiguy's theory
> (about the problem being with an Ubuntu kernel patch) is likely to be
> correct. If people can suggest some tests for me to do that might help, I'll
> try and be of assistance, but this is the main PC in my house, and is needed!
> I'm certainly going to be wary about applying future ubuntu kernel upgrades!
> (might try and stick with the mainline kernel - what a pain!)
You could trivially confirm whether this is an Ubuntu patch by picking the
mainline kernel which the Ubuntu kernel you have is based on. Your full
Ubuntu kernel version can be found with 'cat /proc/version_signature',
and you can map that to a mainline kernel version via the table at the
URL below:
http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html
So if you have 2.6.31-16.51 then you would want to test with mainline
2.6.31.4. As before the mainline kernel can be found at the URL below:
https://wiki.ubuntu.com/KernelTeam/MainlineBuilds
Please do report any testing you do back here, please include full version
numbers for both kernels and indicate how you did your testing.
-apw
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Slow SATA performance
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