no more dual core with prescott 3.20

[richard]

second core not recognized with intel prescott 3.20 GHz

[richard (richardmassimino)]

Was under Feisty and done update to Gutsy by the www and now no more dual core

[Albert Damen (albrt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:

* please run the command
   $ uname -a
   and paste the result in this bug report
* please run the command
  $ dpkg -l linux* > image.txt
  (where l is the lowercase L, not the digit one)
  and attach the file image.txt to this bug report

This will help us to find and resolve the problem.

[richard (richardmassimino)]

Thank you for for looking my problem;

zustra@zustra:~$ uname -a
Linux zustra 2.6.22-14-386 #1 Sun Oct 14 22:36:54 GMT 2007 i686 GNU/Linux
zustra@zustra:~$

[Albert Damen (albrt)]

Thanks for the reply richard.
The kernel you are currently using does not support dual core / multi processors. For dual core you need an SMP kernel, which in Ubutu has a name ending in -generic (instead of -386 you have now). The list you attached shows you do have a generic kernel for Gutsy installed on your PC (ii linux-image-2.6.22-14-generic), so you should be able to use that:
- reboot your PC
- in the grub boot menu* select the kernel with 2.6.22-14-generic, then press enter
- after logging in, check if both cores are active
(*you may need to press <Esc> to get the grub menu)

The question is: how did you get the -386 kernel installed? Did you do that yourself or was that done automatically during the update?

[richard (richardmassimino)]

Cool, I have my 2 cores again.

Your question: how did you get the -386 kernel installed? Did you do that yourself or was that done automatically during the update?

I have not installed it by myself so I suppose it was done automatically (suppose because I am a learner under Linux for just a few month).
 Thank you very much for help, from a French guy.
Happy if I can help community.

[Albert Damen (albrt)]

OK, good to hear it's working now.
As it looks like the i386 kernel was installed during the upgrade, I will mark this bug as a bug in update-manager.
The list of installed packages does not show any evidence of an i386 kernel in the previous release, so the upgrade should not have installed an i386 kernel.