Btw, got an appropriate HDMI cable today and tried hooking it up... and the 
display just has a Tux penguin in the top left corner (which explains the 
unintelligble output over serial at the end of the bootlog, see previous 
pasatebin).

On Thursday, January 11, 2018 at 6:02:12 PM UTC+1, Steve Heim wrote:
>
> Hello,
>
> I've tried installing a xenomai-patched kernel, with the process described 
> below. Installation seems to go smoothly, then when I reboot the boot 
> process keeps getting stuck, loops on the error "ipaddr not set" and 
> eventually just doesn't go anywhere. I've got a bootlog (logged via serial) 
> here: https://pastebin.com/NFNqaH34
>
> If anyone has any idea what's going wrong and can point me in the right 
> direction, I'd very much appreciate it.
>
> --- Installation ---
>
> - get a Debian image from [elinux.org](
> https://elinux.org/BeagleBoardDebian#eMMC:_All_BeagleBone_Varients_with_eMMC).
>  
> `wget BBB-eMMC-flasher-debian-9.3-console-armhf-2018-01-05-2gb.img.xz`
> - Prepare a flasher with [etcher](https://etcher.io/)
> - insert SD card into BeagleBone. **Note** many old (~2015) tutorials 
> claim you need to press down a specific button to tell the BBB to flash 
> from the SD card. This seems to longer be true with UBoot. Powering the 
> board by USB and turning it on (with the SD card in it) flashed it by 
> default. Make sure nothing else (usb-peripherals, ethernet etc.) are not 
> connected. It should flash a cylon pattern on the LEDs for quite a while 
> (~25 minutes) and then finally power off. Remove SD card and boot.
> - Plug in ethernet and update everything: `sudo apt-get update`
> - **Note** You can find the latest kernels maintained by RCN on [his 
> github](https://github.com/RobertCNelson/bb-kernel/tree/3.8.13-xenomai). 
> bb-kernel are closer to mainline and BeagleBone specific. ti-kernels can be 
> used on the X-15 architecture, and include more advanced stuff. I want to 
> patch the bb-kernel.
> - Find the latest maintained kernel: `sudo apt-cache search xenomai | grep 
> '3.18.13'`. Where 3.18.13 is to narrow things down, based on the patched 
> kernels that we've seen are maintained by RCN (see previous step). You can 
> confirm the version comparing with the commits on RCN's github repo for 
> that branch. Take the latest, and install, e.g. `sudo apt-get install 
> linux-image-3.8.13-xenomai-r86 linux-headers-3.8.13-xenomai-r86 
> linux-firmware-image-3.8.13-xenomai-r86` .
> - make sure your u-boot is set to boot the patched kernel: `less 
> /boot/uEnv.txt`. **NOTE** `less` was not available by default, had to `sudo 
> apt-get install less` first...
> - Disconnect ethernet and reboot.
>

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