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I just upgraded from 13.10 to 14.04, but when I do uname -r, it says I have kernel 3.11. I want to have the default 14.04 kernel, (3.13 I believe). How can I get this?

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What is the output of uname -a and lsb_release -a? – jobin Apr 18 '14 at 16:39
    
Linux MH 3.11.0-19-generic #33-Ubuntu SMP Tue Mar 11 18:48:34 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux – shawn221 Apr 18 '14 at 16:40
    
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04 LTS Release: 14.04 Codename: trusty – shawn221 Apr 18 '14 at 16:41
    
May be the same as askubuntu.com/questions/364156/…? In that case my answer should work: askubuntu.com/a/387316/16395 – Rmano Apr 18 '14 at 16:43
    
Thanks to Rmano's comment. I followed the thread and did the solution that you left on it and it worked. Thanks! – shawn221 Apr 18 '14 at 16:50
up vote 13 down vote accepted

This is very similar to Ubuntu 13.10, kernel still 3.8.0-31-generic --- answering here so that this is a more generic question/answer.

Sometime in the upgrade process the kernel meta-packages are "lost". The basic solution is to reinstall the generic kernel package: 

sudo apt-get install linux-generic

which should give you the correct kernel packages and headers after a:

sudo apt-get update; sudo apt-get upgrade

(obviously if you have -rt or -lowlatency or other "flavored" kernels you have to adapt this to your case)

Sometime the system is (wrongly) convinced it has the newest kernel: in that case, try 

sudo apt-get install --reinstall linux-generic
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