After cloning greg kroah hartman's repository from the tutorial , I am
not able to boot into any kernel by default and have to choose from
advanced ubuntu options  from the grub menu . In the advanced ubuntu
options I see generic kernels ,and one rc3+ kernel . I think that's
the one I need to boot in . Am I wrong ? Also when I am trying to boot
in the rc3+ kernel my computer gets stuck and I am unable to boot .
What do I do ? Please help me .

On Mon, Jan 30, 2017 at 9:34 AM, Pranay Srivastava [off-list ref] wrote:

On Mon, Jan 30, 2017 at 6:04 AM, Abel [off-list ref] wrote:

quoted

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.

quoted

On Jan 30, 2017 1:27 AM, "Guru Das S" [off-list ref] wrote:

On 29 January 2017 at 16:19, Abel [off-list ref] wrote:

quoted

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.

quoted

On 30 January 2017 at 01:11, Abel [off-list ref] wrote:

quoted

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 [off-list ref] wrote:

quoted

On 29 January 2017 at 15:32, ??? [off-list ref] wrote:

quoted

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 [off-list ref]:

quoted

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" [off-list ref]:

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


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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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--
        ---P.K.S

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