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I have a working kernel that was installed as a deb, but it does not have a .config instead it has three files that are autoconf, ect, ect. How can I turn this into the current .config to use in a new kernel? Sorry if I don't know all the terminology. Thanks

muru
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Razor_keen
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    I'm voting to close this question as off-topic because custom kernels are not supported here... – Fabby Dec 13 '15 at 00:26
  • You sir, that voted this as off topic are right to do so, but i am a very fresh ubuntu/linux user with a mind to give back to the community, and am working on a patch to fix a very specific problem, with hopes of sending it upstream. I appreciate you seeing this is not the place to ask this, but i ask you give a recommendation of where i can ask this. Kinda sucks to just get the can with no where to turn. be courtious , is all i ask. – Razor_keen Dec 13 '15 at 21:05
  • Possible duplicate of What's a simple way to recompile the kernel? – David Foerster Dec 13 '15 at 23:33
  • You can ask on [unix.se]. – muru Dec 17 '15 at 02:15

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You could start with the current kernel you have in your current Ubuntu installation. They are stored in /boot, for example:

ls /boot/config*
/boot/config-4.2.0-18-generic  /boot/config-4.3.0-1-generic
/boot/config-4.2.0-19-generic  /boot/config-4.3.0-2-generic

and copy the relevant one you want to you top level Linux source directory:

cp /boot/config-4.2.0-19-generic .config

you can either hand edit the .config or use the menu config tool, e.g.

make menuconfig
Colin Ian King
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  • This file does not exist for the kernel i wish to copy the config from. I installed a kernel image and it has autoconf files where normally there would be a .config. are you saying this would generate it? because it doesnt look like it.. – Razor_keen Dec 13 '15 at 20:57
  • @Razor_keen: Please use the config of the kernel you do have in /boot... And I'm sorry, but I'm just doing my duty to the site here... Courteous enough??? ;-) – Fabby Dec 13 '15 at 21:10
  • Indeed, for the current kernel, use: cp /boot/config-$(uname -r) . – Colin Ian King Dec 14 '15 at 12:48
  • Strangely enough, the .config was there the whole time. it was in the directory above where i was looking. yes sir courteous enough for me. Mostly cause im happy to find what i was looking for lol. jk – Razor_keen Dec 17 '15 at 00:54