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OPI-PLUS 2 Wifi / Ethernet issue (loboris kernel) [ SOLVED ]

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Published in 2015-11-30 09:09:16 | Show all floors |Read mode
Edited by @lex at 2015-11-30 16:44

Hi @loboris

I have used this image: OrangePI_Lubuntu_Vivid.img  [ Lubuntu 15.04 with LXDE/Lubuntu Desktop ] and it works fine with Wifi but not with the Ethernet.
I have then compiled your latest kernel using your script for the OPI-PLUS and now Ethernet works, but Wifi not.

Would you kindly share your .config for the OPI-PLUS 2 you have tested?

BR,
@lex
** Update

Apparently my fault, after upgrading the kernel Image only, the Wifi 8189es kernel module becomes invalid.
Rebuild the modules and you are good to go!.

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Published in 2015-12-9 11:47:08 | Show all floors
HOW to rebuild kernel Modules.

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Published in 2015-12-10 19:02:53 | Show all floors
Manjup replied at 2015-12-9 11:47
HOW to rebuild kernel Modules.

You can not rebuild kernel modules without rebuilding the kernel

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Published in 2015-12-13 15:02:32 | Show all floors
whitewind replied at 2015-12-10 19:02
You can not rebuild kernel modules without rebuilding the kernel

how exactly care to post guide for a noob to understand

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Published in 2015-12-20 16:24:13 | Show all floors

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 Author| Published in 2015-12-21 08:32:59 | Show all floors
Edited by @lex at 2015-12-21 09:06
whitewind replied at 2015-12-10 08:02
You can not rebuild kernel modules without rebuilding the kernel

Just to clarify what i meant, the image provided by @loboris works with Wifi, but ethernet (GMAC) is disabled (in this specific image i linked above). I had rebuild the whole kernel with GMAC enabled for OPI-PLUS (2) using arm-linux-gnueabihf-gcc instead of arm-linux-gnueabi-gcc used by @loboris and legacy SDK. I copied uImage but not the kernel modules (.ko) that resides in /lib/modules/3.4.39/kernel. This resulted in "invalid kernel module" when linux tried to load the WIFI and others modules that are not compiled into, so i had GMAC working but WIFI not, the opposite to the original image available by @loboris.
This is the .config for the OPI-PLUS (2)
CONFIG_GMAC_PHY_POWER=y

This is the .config for the OPI-PC
# CONFIG_GMAC_PHY_POWER is not set

So basicly people who have problems with WIFI and/or Ethernet must update the kernel either using @loboris script (the easiest way) or manually as i did the second time.
And the first time you build the kernel you build the whole kernel and its module (later you can build only a specific module without building the whole kernel when you are developing).
The modules can be externaly loaded, for example when you set CONFIG_RTL8189ES=m (to build as a module and this must be loaded at run-time to work),  or with CONFIG_RTL8189ES=y (built into and you don't need to explicitly load the module with insmod).

In order to build the kernel and (coff,coff) rebuild the modules you have to setup your build environment, i suggest Lubuntu 12.04 (64-bit), so we are going to cross-compile the arm kernel for the OPI-PLUS, so here is a recipe:

sudo apt-get update
sudo apt-get install git gnupg flex bison gperf build-essential zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev libx11-dev:i386 libreadline6-dev:i386 mingw32 tofrodos python-markdown libxml2-utils xsltproc zlib1g-dev:i386 libgl1-mesa-glx:i386 libgl1-mesa-dev

git clone https://github.com/loboris/OrangePI-Kernel opi

Building using @loboris script (in our case OPI-PLUS):cd opi
./build_scripts plus

If you want to configure kernel or change something like add module or remove module you can:
  1. ./config_linux_kernel.sh
Copy code
or edit ./output/.config and change appropriately

and later rebuild the changes again:
  1. ./build_scripts plus
Copy code

The final results will be in: build directory
* replace uImage with uImage_OPI-PLUS (rename it to uImage) (SD CARD)
* copy lib.opiplus/* to /lib/ (SD CARD)

Be warned that every new build (clean) you may end up with different kernel string version like: 3.4.39-02-lobo

If you want to know more about building kernel modules:  https://wiki.archlinux.org/index.php/Compile_kernel_module

Hope this help.












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