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Will it be possible to use a non-pae kernel in 12.10

I have just been upgrading my Xubuntu 12.04 system to Xubuntu 12.10. However I've got several error message during the upgrading process. At the end I was left with two broken packages: linux-image-extra-3.5.0-17-generic and linux-image-generic.

Trying to reinstall them gives me the following error message:

This kernel does not support a non-PAE CPU.

I have found the following posts:



Do I understand them right that my CPU is not supported anymore? Is there any other way to fix this problem?


  • Btw: I'm using a IBM Thinkpad T42 containing an Intel Pentium M 1.7 GHz. It surely is not the newest system, however I think not that old to completely stop the support. – Michael Oct 25 '12 at 17:28

Unfortunately this is true. Lubuntu and Xubuntu 12.04 LTS were the last releases supporting a non-PAE CPU by providing a 32-bit non-pae kernel as can be read from the release notes:

The i386 images use a non-PAE kernel. The non-PAE kernel will not be available in future Xubuntu releases.

Therefore it is recommended to stay with the 12.04 long term release on an old system which does not support PAE. This release will be fully supported until end of 2017.

See also this question:

  • Thanks. Is there a way to downgrade from 12.10 to 12.04 again? – Michael Oct 25 '12 at 17:50
  • There hopefully haven't been made any changes to the settings files in you HOME because you were unable to boot. Therefore it should be safe to re-install from a Xubuntu 12.04 CD/USB. In case you have a separate HOME partition it's easy: just take care not to format it. Otherwise you should backup the HOME directory before you proceed and restore it later. You will not have the usual option to install without erasing HOME in case there is a 12.10 installation present! Disclaimer: I have not tested this, so I cant tell for sure that its safe. – Takkat Oct 25 '12 at 18:23

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