From mboxrd@z Thu Jan  1 00:00:00 1970
From: pranjas@gmail.com (Pranay Srivastava)
Date: Mon, 30 Jan 2017 09:34:28 +0530
Subject: How do you generate the config file?
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To: kernelnewbies@lists.kernelnewbies.org
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On Mon, Jan 30, 2017 at 6:04 AM, Abel <akronix5@gmail.com> wrote:
>
> Yes, similar procedure I've followed.
> I didn't forget step 4. I actually always did `sudo make install_modules`. I'm not sure what's going on.
>
> Maybe it has sth to do with Ubuntu, that's why specifically mention I was using Ubuntu.
>
> Maybe I can try with some other distro. Probably Manjaro has better support for latest kernel releases.
>
> It's late here. I'll keep trying and let you know in case I figure out sth.

Ok so probably some modules got missed while building your custom kernel.
Perhaps you can zcat /boot/config-$(uname -r)
and store it as .config to your custom
kernel source location?

Then probably try and remove what you don't need? and see if it works.

>
> On Jan 30, 2017 1:27 AM, "Guru Das S" <gurooodas@gmail.com> wrote:
>
> On 29 January 2017 at 16:19, Abel <akronix5@gmail.com> wrote:
> > I've posted a mail with the screenshot (waiting for moderation) when I try
> > to boot from make defconfig built kernel. Basically the kernel doesn't boot
> > because "Missing modules (cat /proc/modules; ls /dev " it says...It's the
> > same screen that appeared when I tried using make oldconfig pressing enter
> > for default values.
> >
> > I tried using make localmodconfig but It again asks for many config params
> > that I don't know anything about.
> >
> > Saludos,
> >
> >                                                        Abel.
>
> Hi Abel,
>
> The procedure I followed in order to compile, install and boot my
> custom compiled kernel is:
>
> 1. Copy .config from existing distribution to kernel tree.
>
> 2. Run make localmodconfig (I also got a bunch of prompts for
> parameters I had no idea about. I just pressed down Enter till the
> stream of options stopped flowing!)
>
> 3. Run make -j<N> where N is a good number for your system.
>
> 4. Run make modules_install
>
> 5. Run make install (This ran update-grub for me at the end, though,
> which was convenient)
>
> That's it. I was able to boot into this newly compiled kernel via
> grub's selection menu upon rebooting. I think you may have missed
> doing Step 4 above.
>
>
> Guru Das Srinagesh.
>
>
> >
> > On 30 January 2017 at 01:11, Abel <akronix5@gmail.com> wrote:
> >>
> >> Hi.
> >>
> >> I just built using make defconfig and it, again, doesn't boot. Instead it
> >> displays the error that I've described before (sorry I forgot to attach the
> >> screenshot, I attach it here).
> >>
> >> As I already stated, neither /boot/${uname -r} nor make oldconfig work for
> >> me, they both show the screen above.
> >>
> >> Saludos,
> >>
> >>                                                        Abel.
> >>
> >> On 30 January 2017 at 01:08, Guru Das S <gurooodas@gmail.com> wrote:
> >>>
> >>> On 29 January 2017 at 15:32, ??? <mudongliangabcd@gmail.com> wrote:
> >>> > Hello,
> >>> >     If you want to reuse the config of current kernel, you can use
> >>> > `make oldconfig` to generate config file.
> >>> >
> >>> > --
> >>> > My best regards to you.
> >>> >
> >>> >      No System Is Safe!
> >>> >      Dongliang Mu
> >>> >
> >>> > 2017-01-29 18:24 GMT-05:00 Ozgur Karatas <mueddib@goosey.org>:
> >>> >>
> >>> >> Hello,
> >>> >>
> >>> >> you can get .config files in two ways, firstly get the existing
> >>> >> .config file
> >>> >> and compile to kernel.
> >>> >>
> >>> >> $ cp /boot/config-x.x.x /bla/linux/.config
> >>> >>
> >>> >> Second, use the generate command:
> >>> >>
> >>> >> $ make defconfig
> >>> >>
> >>> >> Regards,
> >>> >>
> >>> >> ~Ozgur
> >>> >>
> >>> >> 30.01.2017, 01:18, "Abel" <akronix5@gmail.com>:
> >>> >>
> >>> >> Hi!
> >>> >>
> >>> >> Where do you get the config file from? or do you generate it yourself?
> >>> >>
> >>> >> I'm using xUbuntu 16.04 in a VM inside VMWare, following the
> >>> >> instructions
> >>> >> described in kernelnewbies wiki. (By the way, the download links to
> >>> >> the iso
> >>> >> images of Ubuntu don't work for me)
> >>> >>
> >>> >> If I copy the latest config file in /boot, kernel 4.4.0, it starts to
> >>> >> ask me
> >>> >> many config parameters that I don't know what to answer. I tried to
> >>> >> press
> >>> >> always <enter> to set up the default parameters, but after compiling I
> >>> >> get
> >>> >> an error trying to boot from that kernel (see atachment).
> >>> >>
> >>> >> I tried with make menuconfig and that seems to work, but it takes too
> >>> >> long
> >>> >> because it builds and includes many many drivers modules.
> >>> >> Yeah, I know I could navigate through the ncurses window and select
> >>> >> the
> >>> >> stuff I want and deselect what I don't want, but I'd rather prefer
> >>> >> just a
> >>> >> simple config file that builds and works and don't waste time in
> >>> >> understanding all the stuff that it's in there.
> >>> >>
> >>> >> So, isn't there a way to get a simple config file just to develop
> >>> >> kernel
> >>> >> stuff for an Ubuntu image?
> >>> >> I've even gone to the kernel ppa sources for Ubuntu:
> >>> >> http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.9.5/; but it only
> >>> >> provides
> >>> >> a patch using the debian config files (which don't come from git
> >>> >> sources of
> >>> >> course).
> >>> >>
> >>> >> I just want a config file, copy it to the kernel root code and
> >>> >> compile.
> >>> >>
> >>> >> Greetings,
> >>> >>
> >>> >>                                                        Abel
> >>> >>
> >>> >>
> >>> >> _______________________________________________
> >>> >> Kernelnewbies mailing list
> >>> >> Kernelnewbies at kernelnewbies.org
> >>> >> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> >>> >>
> >>> >
> >>> > _______________________________________________
> >>> > Kernelnewbies mailing list
> >>> > Kernelnewbies at kernelnewbies.org
> >>> > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
> >>>
> >>> Hi Abel,
> >>>
> >>> To add to what Ozgur said, you may first copy the existing .config
> >>> file that comes along with your Linux distribution to your kernel
> >>> tree, and then use:
> >>>
> >>> $ make localmodconfig
> >>>
> >>> instead of defconfig. A quick Google search should tell you the
> >>> differences between the two - and from what I've read, localmodconfig
> >>> is preferred to defconfig.
> >>>
> >>> Hope this helps.
> >>>
> >>>
> >>> Guru Das Srinagesh.
> >>
> >>
> >
>
>
>
> _______________________________________________
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> Kernelnewbies at kernelnewbies.org
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>



-- 
        ---P.K.S