Dual Core CPU not seen after an upgrade to Karmic

[David MENTRE]

Hello,

2010/1/27 David MENTRE <dmentre at linux-france.org>:
> After an upgrade of my dual core AMD 4050e machine to Karmic, the
> second core is no longer seen (/proc/cpuinfo shows only one CPU).  I
> have never seen this issue  with Jaunty.
>
> Is this a known issue? Should I report it? To which package?

For the record, I have opened a bug against "linux" package (thanks Dustin):
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/513905

Regards,
david