Depmod could not open directory

Technical Support
, ,
1

Hello,

here is my problems, using those commands:

root@colibri-imx7:~# depmod
depmod: ERROR: could not open
directory
/lib/modules/4.1.39+gba2f75f: No such
file or directory
depmod: FATAL: could not search
modules: No such file or directory

or

root@colibri-imx7:~# modprobe
imx_rpmsg_tty
modprobe: FATAL: Module imx_rpmsg_tty
not found in directory
/lib/modules/4.1.39+gba2f75f

The cause is directory path : /lib/modules/4.1.39+gba2f75f is wrong.
The correct directory path is : /lib/modules/4.1.39-2.7.2+gba2f75f.
-2.7.2 is missing

How can i change this path?

2

When deploying custom kernel you also need to compile and deploy modules e.g. as explained in the following section of this article on our developer website.

3

Search for “kernel module” in the article Dominik referenced.

And then compile and deploy the kernel modules into the rootfs.

4

Yes, you forgot the part about deploying the Linux kernel modules as well just like my two previous speakers @max.tx and @dominik.tx already pointed out.

5

Thanks dominik.tx for your answer and max.tx for your help.

I forgot to do:

make -j3 modules
sudo -E make INSTALL_MOD_PATH="path-for-modules" modules_install
cd "path-for-modules"
tar cjvf kernel-modules.tar.bz2 lib/modules/*

copy kernel-modules.tar.bz2 to target in directory “path-for-file” then :

cd /
tar xjvf "path-for-file"/kernel-modules.tar.bz2
depmod
6

Hello,

That’s what i did.
This is a list of my actions :

  1. Build of a BSP (bitbake -k console-tdx-image)
  2. In source files, modify files for device tree
  3. In source files, modify a driver
  4. Modify configuration using :
    make colibri_imx7_defconfig
    make nconfig
  5. Compile the kernel using :
    make -j3 zImage LD=${CROSS_COMPILE}ld.bfd | tee build.log
  6. Compile the device tree using :
    make imx7d-colibri-eval-v3.dtb
  7. Prepare an SD card as described in this article
  8. Replace zImage and imx7d-colibri-eval-v3.dtb on the SD card
  9. Boot the module to the U-Boot prompt and update U-Boot using :
    run setupdate
    run update

After that, depmod could not open directory

Do i forgot a step?

7

Thanks for the update, glad you could resolve the issue!

Note that ideally you reintegrate your changes into OpenEmbedded layers and build a complete, coherent image with modules.