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 <pranjas@gmail.com> wrote:
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, 慕冬亮 <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
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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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