Latest Kernel Patches

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chris_yokum
chris_yokum New Member Posts: 3 ✭
in UP Board Linux

Do you have the latest kernel patches available somewhere? It would be nice if these were available as an official download.
The pre-patched kernels (ppa) available seem quite old, I'd like to be able to just build my own latest kernel whenever I need to.

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    Hi @chris_yokum

    You can find the source code for Ubuntu Kernel 4.15 for UP on the following repositories:
    https://gitlab.com/aaeonaeu-sw/ubuntu-xenial-up
    https://gitlab.com/aaeonaeu-sw/ubuntu-xenial-meta-up

    We also released Ubuntu kernel 5.0, but it is currently tested only on UP Xtreme, we will provide an update for the other platforms by the end of March:
    https://gitlab.com/aaeonaeu-sw/ubuntu-bionic-up
    https://gitlab.com/aaeonaeu-sw/ubuntu-bionic-meta-up

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  • tdudz
    tdudz New Member Posts: 8 ✭
    edited February 2020
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    @DCleri Which files in the repo are new/would i need to port over to a different kernel version? I need to use the RT patch and it doesnt seem to exist for kernel 4.15 so I would like to port it over to 4.16 if possible. Is it just upboard.c and upboard_pinctrl.c in /drivers/platform/x86 ?

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    I believe it would be easier to port from 4.15 to 4.16.

    To make sure you include all the necessary files/changes, please check history and do a diff with the base kernel used for the UP Kernel:
    UBUNTU: Ubuntu-hwe-4.15.0-37.40~16.04.1

    https://gitlab.com/aaeonaeu-sw/ubuntu-xenial-up/-/commits/upboard-hwe/

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  • Lubo
    Lubo New Member Posts: 41 ✭✭
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    @DCleri said:

    We also released Ubuntu kernel 5.0, but it is currently tested only on UP Xtreme, we will provide an update for the other platforms by the end of March:

    Hello, are there good news regarding to this (UPBoard platform) ?

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    Validation is not complete yet and we are working on the last part of the process before we can publish the new Kernel.

    We should be able to release it in the coming weeks, but I don't have an exact date right now.

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  • niharG
    niharG New Member Posts: 7 ✭
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    Hi @DCleri, can you provide an update on the 5.0 kernel compatibility with other boards? I'm specifically interested in running it on the UP Squared. I'm also curious if there are plans to release a newer kernel and/or Ubuntu version (20.04 LTS with 5.4 kernel is now available). Thanks!

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    Hi @niharG

    The kernel 5.0 is ready for all the boards and we have published on the following PPA: https://launchpad.net/~aaeon-cm/+archive/ubuntu/upboard

    sudo apt-get install linux-generic-hwe-18.04-edge-upboard

    we will update the wiki soon with the new information

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    About Ubuntu 20.04 and Kernel 5.4 will be adopted later this year between Q3 and Q4 this year.

    Kernel 5.4 will be available for both Ubuntu 18.04 and 20.04

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  • niharG
    niharG New Member Posts: 7 ✭
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    That's great news! Thank you for the update :smiley:

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  • tdudz
    tdudz New Member Posts: 8 ✭
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    @DCleri has the source code for the kernel 5.0 been released to gitlab as well? I would like to use it to build the kernel with the PREEMPT_RT patch. please let me know

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    https://github.com/AaeonCM/ubuntu-bionic-up


    Let us know if you manage and if possible what software/application are you planning to run on top.

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  • tdudz
    tdudz New Member Posts: 8 ✭
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    @DCleri thank you for the link. I was able to build and install the kernel, but i've noticed that SPI no longer shows up under /dev/ anymore. I have not been able to get it to show up at all since kernel v4.8 and im not sure why. I require both /dev/spidev2.1 and /dev/spidev2.0. Do you have any ideas what might be the case or how to proceed? Thanks

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    @tdudz

    In order to have SPI working on UP board you would need to include and port all our I/O pinctrl patches which are included in our kernels.

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  • ŁukaszMitka
    ŁukaszMitka New Member Posts: 1 ✭
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    @DCleri Are there any updates on Kernel 5.4 and Ubuntu 20.04?

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  • DCleri
    DCleri Administrator, AAEON Posts: 1,213 admin
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    We are still working on it as there are some issues we faced during the upgrade in functionalities for the first UP Board that we would need to resolve first.

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  • BeningFun
    BeningFun New Member Posts: 9 ✭
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    With Kernel 5.0 installed and Ubuntu 18.04.5 I am unable to install ROS MELODIC.

    I've wiped the drive twice and restarted with a fresh install per the instructions. I get to an Ubuntu desktop that works. When I go to install ros melodic:

    sudo apt install ros-melodic-desktop-full (or any of the ros builds)

    I get bad package error and apt aborts. Digging into the dependencies, even after

    sudo apt-get --fix-broken install
    sudo apt-get clean
    sudo apt-get install -f
    sudo dpkg --configure -a
    sudo apt-get update

    I find that there are some Debian test builds installed ahead of the Ubuntu supported packages. Reverting to those older ones hasn't worked... yet (haven't gone through the whole chain). Before going further. Anyone got ROS MELODIC on Ubuntu 18.04 going with Kernel 5.0. I think I should go back to 4.15 and Ubuntu 18.4. Thoughts?

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  • BeningFun
    BeningFun New Member Posts: 9 ✭
    edited November 2020
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    Just installed 1604 with the 4.15 kernel. Got a working Ubuntu desktop. Went to install ros-kinetic and same error.

    Depends on 4 ros sub packages like ros-kinetic-desktop, ros-kinetic-perception. And when I drill down on those I they depend on ros-kinetic-core (for instance) which itself has 10 dependencies that won't be installed... further digging leads to more dependencies to packages like libopenmpi-dev, then libhwloc-dev, then libnuma-dev, which finally gets to the same problem above. libnuma-dev depends on libnuma1=2.0.11-1ubuntu1 and what's already installed is ubuntu 1.1 of the same library. This is true in 100 places it seems.

    Who has successfully installed ROS on the 4.15 or 5.0 kernel? How? Going back to 5.0 and 18.04 to figure this out.

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  • BeningFun
    BeningFun New Member Posts: 9 ✭
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    SOLVED. By unchecking download updates, I'd inadvertently set the update flags. Once I reset them after a clean install. It worked. Doh!

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