I'm running Ubuntu 10.10 Desktop x86_64 on a Mac mini 4.1 and it looks like I can only use one CPU core. It looks like the kernel supports SMP. I wish I could tell you whether it worked with Lucid, but I didn't notice.
Anybody know why this isn't working?
Here's some relevant output:
$ sudo dmidecode -s system-product-name Macmini4,1 $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.10 DISTRIB_CODENAME=maverick DISTRIB_DESCRIPTION="Ubuntu 10.10" $ uname -a Linux harold 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:45:36 UTC 2010 x86_64 GNU/Linux
EDIT: I should have included
/proc/cpuinfo. This is what I used to confirm that I was only getting use out of one core. I've since performed a fresh install of x86 Maverick on the Mac mini (which was an exercise in frustration in itself) and now I have use of both cores. I never figured out why it didn't work in the first place.