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robertoj

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Posts posted by robertoj

    Driving the ili9488 LCD (4.0 inch cheap chinese clone)

    in Allwinner sunxi

    Posted · Edited by robertoj

    If you already checked "dmesg|grep panel-mipi" and "dmesg|grep spi", check this:

     

    * share which LCD you are using. Half of those LCDs are waveshare clones, which need a different driver. My DTS works in the RED LCDs.

     

    * Look at the uboot messages in the serial port output. Does it confirm it is finding your dtbo and using it?

     

    * verify that panel-mipi-dbi.ko exists in the modules folder. I know it is not preselected by default within the linux configuration menu

     

    * Search the word "pinctrl" in this thread https://forum.armbian.com/topic/44191-orangepi-zero-lts-ili9341-tft-lcd-and-later-orangepi-zero-3/#comment-204741

     

    To confirm that the kernel driver is using the gpio and spi pins

     

    * send link of the rock3c DTS you are referencing, to see an example of how GPIOs are configured

     

    * correct the gpio pin map you shared. Instead of tx/rx, use MOSI, MISO. Highlight and label clearly the CS0, CS1, RESET, DC, IRQ

     

    * explain how those gpio numbers gpioX,XX transform into the DTS gpioX XX 1/0

     

    If you at least get noise in the LCD, you are 50% done :) (and maybe you will get lucky in the last 50%)

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    Repository for v4l2request hardware video decoding (rockchip, allwinner)

    in Reviews, Tutorials, Hardware hacks

    Posted · Edited by robertoj

    Oh I get it. Since you are using another distro with newer versions of everything, my effort to build ffmpeg and mpv in Debian Trixie LOOKS like a backport to you XD

     

    upon reading your comment again, I understand the consequences of upgrading ffmpeg from source (Debian Trixie's ffmpeg is version 7.1.2)

     

    According to: https://forums.linuxmint.com/viewtopic.php?t=457495, I would need to check with "apt-rdepends -r ffmpeg"

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    Repository for v4l2request hardware video decoding (rockchip, allwinner)

    in Reviews, Tutorials, Hardware hacks

    Posted · Edited by robertoj

    The ffmpeg discussion posted a way to test the code (at the bottom of https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20847 )

     

    *install all the ffmpeg dependencies, then: 

    $ git fetch -u https://code.ffmpeg.org/Kwiboo/FFmpeg v4l2request-v3:Kwiboo-v4l2request-v3
$ git switch Kwiboo-v4l2request-v3

    * compile and install

     

    Then rebuild mpv+PR14690 (https://forum.armbian.com/topic/32449-repository-for-v4l2request-hardware-video-decoding-rockchip-allwinner/page/5/#findComment-226567)

     

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    Repository for v4l2request hardware video decoding (rockchip, allwinner)

    in Reviews, Tutorials, Hardware hacks

    Posted · Edited by robertoj

    9 hours ago, JFL said:

    You managed to build mpv with v4l2request for Debian Trixie that has vpu hardware acceleration? Care to share?

     

    No. I haven't tried anything new. My previous attempts compiling mpv in Trixie were unsuccessful.

     

    I want to try it again by compiling and installing this new ffmpeg+v4l2 first, then trying compiling mpv again.

     

    You should try it too :)

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    Repository for v4l2request hardware video decoding (rockchip, allwinner)

    in Reviews, Tutorials, Hardware hacks

    Posted · Edited by robertoj

    There's a new version of the kwiboo ffmpeg+v4l2request function

     

    https://code.ffmpeg.org/Kwiboo/FFmpeg/src/branch/v4l2request-v3

     

    And it was shown as a work in progress in the ffmpeg community

     

    https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20847

     

    Then, it was noticed in the mpv community

     

    https://github.com/mpv-player/mpv/pull/14690#issuecomment-3500141427

     

    They previously said that v4l2request first needs to be integrated in ffmpeg officially, then mpv would start working on v4l2request

     

    This is needed, to have mpv+v4l2request compiling successfully and working under Debian Trixie (my experience)

    1

    Miminal specs for armbian with desktop GUI

    in Beginners

    Posted

    It all depends on the GUI apps you want to run.

     

    Web browser: at least 4GB

     

    Your own Python GUI app: 1GB

     

    16GB storage is fine.

     

    "A more advanced build framework" only refers to the laptop you use to compile your own Armbian OS... it doesn't refer to the SBC where you will run it.

    0

    OrangePi PC + ili9486

    in Allwinner sunxi

    Posted

    Yes, CONFIG_TINYDRM_ILI9486 is the kernel module for that model of LCD with DRM. There's another thread explaining how to use it.

     

    I think you can use udev rules to force SPI LCD as /dev/fb0 and HDMI as /dev/fb1 always.

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    Driving the ili9488 LCD (4.0 inch cheap chinese clone)

    in Allwinner sunxi

    Posted · Edited by robertoj

    I noticed this problem a long time ago, but now I feel it is important to fix it:

     

    I get a slim black bar on the left side, and a portion of the pixels on the right get "cropped" because they don't fit in the LCD display area?

     

    I get the left 2 pixels of the screen "cropped", so in console, the first left-side are always missing the left pixels.

     

    Do you get the same in your LCD? Do you know a way to fix it? I am talking about this LCD: RED PCB LCD https://www.aliexpress.us/item/3256802847521952.html?

    0

    OrangePi PC + ili9486

    in Allwinner sunxi

    Posted · Edited by robertoj

    In that case, dont try my solution: it is for the red ili9341.

     

    If you search ili9486 threads in this forum, that same blue LCD is ili9486... so you were wrong in calling it ili9341 in the first place :)

     

    If you have time, find another solution to get you a DRM frambuffer (instead of a classic FB). Then you can enjoy smoother animations and video.

     

    Regarding displaying boot messages to the LCD, instead of HDMI. I don't know, but it may be because your HDMI is /dev/fb0 and the LCD is /dev/fb1

     

    Will you use X11?

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    Critique or improve my method to get a lightweight LabWC desktop

    in Allwinner sunxi

    Posted

    If anyone in interested in a lightweight wayland desktop, inspired by openbox, you should try labwc.

     

    In orange pi zero 3, we need to stay in bookworm to get video acceleration, so this guide helps build labwc in bookworm :thumbup:

     

    As a greeter, I chose pi-greeter, because it is the lightest login manager I could setup, without any X11

     

    https://github.com/robertojguerra/opiz3-labwc-setup

     

    I am open to read any improvements, or show me how I could make deb packages.

     

    In the near future, I will make a step-by-step video tutorial in Youtube.

    0

    Orange Pi Zero 2 (H616) - No /dev/spidev on recent kernel for ST7735S display

    in Orange Pi Zero 2

    Posted

    Dont write that "fbi works correctly", when it is not.

     

    The display remains white, and the kernel doesn't show any errors.

     

    * Re-check your wiring

    * Disconnect the touch part of the LCD pins

    * Try reversing the polarity:

    dc-gpios = <&pio 2 6 1>;   << change the 1 to 0
    reset-gpios = <&pio 2 9 1>;  << change the 1 to 0

     

    If the CPU is successful sending the reset signal, the data/command, the chip select and any bytes through SPI, at least the LCD should turn black.

     

    0

    Anybody running a 100% wayland system?

    in Software, Applications, Userspace

    Posted · Edited by robertoj

    I got my issue resolved with labwc+greetd+nwg-hello

     

    See this link https://github.com/nwg-piotr/nwg-hello/issues/43

     

    Please check it and post any corrections if needed

     

    Getting rpi-greeter (no python) and wf-panel-pi (combines panel and launcher in compact form) would be ideal, but not resolved yet.

     

    If anyone is interested in getting rpi-greeter working, this is my partial progress, and I still cannot make it start under lightdm, without any X11:

     

    sudo apt install lightdm accountsservice polkitd

    sudo apt install libgtk-layer-shell-dev librsvg2-common

    sudo apt install gnome-common gobject-introspection gir1.2-gtk-3.0

     

    These might be needed. I installed them the day after I installed greetd and ngw-hello. Note: I am working from a minimal debian trixie image

    appmenu-gtk-module-common libaccountsservice-dev gir1.2-accountsservice-1.0 liblightdm-gobject-dev liblightdm-gobject-1-0 libgtk-3-dev gnome-common nasm

     

    ~$ mkdir rpi-greeter ; cd rpi-greeter

    wget https://github.com/raspberrypi-ui/pi-greeter/archive/refs/heads/master.zip

    unzip master.zip ; cd rpi-greeter-master

    autogen.sh

    ./configure

    make

    sudo make install

     

    Change /etc/lightdm/lightdm.conf with:

    greeter-session=pi-greeter-labwc

     

    Test with:

    $ sudo lightdm --test-mode --debug

    or

    $ sudo systemctl start lightdm

    $ journalctl -b -u lightdm.service

    The error is:

     

    Oct 13 22:01:49 orangepizero3 lightdm[845]: Error updating user /org/freedesktop/Accounts/User1000: GDBus.Error:org.freedesktop.Accounts.Error.PermissionDenied: Not authorized: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PolicyKit1 was not provided by any .service files

     

    DEBUG: Could not run plymouth --ping: Failed to execute child process ?plymouth? (No such file or directory)

     

    I think I am very close to getting rpi-greeter working. What could be missing?

     

    I see that in a raspberry pi, the folder /etc/xdg/labwc-greeter/ exists, with 3 files inside, but in armbian, it doesn't exist. Should it be created by sudo make install?

     

    sudo nano /var/log/lightdm/lightdm.log:

    Nothing weird. Only:

    [+0.07s] DEBUG: Session pid=6392: Running command /usr/bin/labwc -C /etc/xdg/labwc-greeter/ (and this folder /etc/xdg/labwc-greeter/ does not exist)

    In raspberry: /etc/xdg/labwc-greeter/ contains autostart, rc.xml and environment

     

    sudo nano /var/log/lightdm/seat0-greeter.log:

    ** (process:6392): WARNING **: 00:23:07.745: Failed to open CK session: GDBus.Error:org.freedesktop.DBus.E>
    00:00:00.000 [ERROR] [../src/main.c:202] XDG_RUNTIME_DIR is unset

     

    The etc/xdg/labwc-greeter/autostart, etc files come from a package named raspberrypi-ui-mods

    (raspberry$ dpkg -S /etc/xdg/labwc-greeter/autostart)

    What part of https://github.com/raspberrypi-ui/raspberrypi-ui-mods would get my lightdm+labwc+rpigreeter working?

     

    Copying the /etc/xdg/labwc-greeter/ folder with the 3 files, with the same permissions, allow the pi-greeter to display (it is very plain), but after entering the password, the text mode display shows for 2 seconds, then the labwc black background and cursor shows for 1/4 second, then returns to the login screen.

     

    Found this error in the log:

    /etc/xdg/labwc-greeter//autostart: 2: /usr/bin/kanshi: not found

     

    Final part of solution:

    lightdm should contain:

    user-session=LXDE-pi-labwc

     

    Create file /usr/share/wayland-sessions/ LXDE-pi-labwc.desktop: 

    [Desktop Entry]
Type=Application
Name=Labwc Desktop on Wayland
Exec=/usr/bin/labwc

     

    rpi-greeter does not allow selection of other sessions: only labwc

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