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I am running Elementary OS (basically Ubuntu 12.04). I had to upgrade my kernel to 3.13. I did this using dpkg. However, system updates still shows kernel 3.2 as available. Is this because apt does not know that I already have a newer kernel? How can I sync state between the two so that older kernel versions do not show up?

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I don't know if you have already noticed that kernel follow different approach to package naming and version. So it will be possible to install multiple kernels. Example: linux-headers-3.13.0-16 is the name of package (only, not as may though is name & version which is linux-image-3.13.0-16-generic_3.13.0-16.36 , deb package full name linux-image-3.13.0-16-generic_3.13.0-16.36_amd64.deb). So they are like totally different packages. You could either update it (ie kernel 3.2) or just remove it if you don't want such notification. –  Sneetsher Mar 15 '14 at 12:18

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