robertoj

Can you compare the device tree between your working system, and from the freshly installed 25.2.3/6.12.22 (write the img in a new microSD) View your device tree with: #(root) dtc -I fs -O dts /sys/firmware/devicetree/base (you need to find out which driver handles the audio, and search for that driver name in the working device tree) Also, check differences in armbianEnv.txt Also, check differences in ".config" in the /boot/ folder (specially anything related to audio) Also check the contents of "dmesg", searching for the audio driver name

The orange pi zero LTS has analog video under Armbian, because: * the LibreElec project had kernel patches that added the driver code for the same SBC * I carefully modified those patches so they would fit the Armbian version of Linux, correct all compilation errors, and all errors I saw. It was a month long effort If you see that Radxa has video output in the official distribution, do you see any source changes to enable it?

Is anyone using the orange pi zero LTS or 3, with any ilitek LCD, with spi-gpio driver? I had my LTS working with ili9341 and spi-gpio last year... but the touch is not working now... I think I changed the wiring or the DTS in the running system but I can't tell.

Does anyone know if the spi-cpol and spi-cpha parameters are applicable in the ads7846 part of the DTS? I have seen cpol in an LCD discussion here: https://forum.armbian.com/topic/38896-orange-pi-lite-problem-with-latest-firmware/#findComment-191293 I am running out of ideas to try to make touch work... I can also try using gpio-spi.ko I need to check that the IRQ pin is changing from 3.3 to 0V... if I connect a LED to it, will it be a 0.0V pulse or held low while I press my finger? I learnt that /proc/interrupts can tell me if the IRQ input is seeing something... and I can see the number increase each time I press my finger on the screen: (see the line that ends with ads7846) https://forums.raspberrypi.com/viewtopic.php?t=187023&start=25 Is there any way to debug the ads7846 kernel module? I have seen this J1jumper mentioned here: https://forum.arduino.cc/t/solved-3-5-tft-not-stable-at-power-up/684536/19 "if you jumper J1, you feed it with 3.3V" I power it with 3.3V and the J1 contacts are disconnected... so maybe the 7846 is undervolted... does anyone have experience with this?

I received my new LCD today. It is a 9486 but luckily it worked with my 9488 dts HOWEVER: The touch xpt2046/ads7846 is not sending any events…checking with evtest… same dts works with the ili9488 4.0” I already tried changing the GPIO polarity (level and clock transition) has anyone worked with any of the red 3.5 lcd ili9488 or 9486

I don't think increasing the SPI clock can help Try adding "BGR=<1>;" under the rotation line... this works for the ili9341, but i dont know about the driver that you use.

Great find.... this will be useful for me very soon

Try again with Linux 6.10 or older if you have an armbian img. Two things I found needed for linux 6.12+: 1. Define the pinctrl-names and pinctrl-0 parameters 2. MAYBE: rebuild Armbian in your computer, with one less Armbian patch As seen in: https://forum.armbian.com/topic/47971-driving-the-ili9488-lcd-40-inch-cheap-chinese-clone/#findComment-216779 In this thread, you can see how I detected miscofigurations of the SPI GPIO: https://forum.armbian.com/topic/50418-dont-use-kernel-61216-on-sunxi64/page/2/#findComment-216924 WDR_s: did you try upgrading to Linux 6.12? (you could get H264 acceleration if you upgrade)

pithecanthrope, That DTS is specific for the raspberry pi lcd... not for the red pcb ili9486. Do you have that? You can name the DTS any filename, for example ~/ili9486/ili9486-35.dts cd ~/ili9486-35 sudo armbian-add-overlay ili9486-35.dts The command will also add it to armbianEnv.txt Make sure to not add any other overlays related to SPI It is very nice that the raspberry pi lcd doesn't need us to fabricate a custom cable, just plug it in the correct orientation. Are you using Linux 6.12?

Start with a minimal image: no X11, no desktop sudo systemctl list-units --type=service --all Find those services you don't need, and "sudo systemctl disable <service>" Is buildroot a nice experience like armbian?

I have an IoT project that uses an SPI LCD (480x320), showing 1 full screen application on top of X11, which starts automatically, almost in kiosk mode. Is it worth a lot trying to switch to Wayland? I have 2 roadblocks, which I am trying to drill through: * tkinter app re-write in pyqt * starting from a minimal armbian image, and install the bare minimum to have wayland and start the app Solid advantage: * Future proofing the product I have these preconceived advantages: * less resources needed: my application is fine with an OrangePi Zero 3 with 1 GB RAM, I don't want to upgrade RAM * faster startup (now I need to wait 1 minute from power-on to app ready to use, reducing it to 30 seconds would be nice) I know that I can't expect these advantages, since I use SPI instead of HDMI or DSI: * 30 FPS * No frame tearing But really, my main objective is faster startup: will Wayland help me with that? (without having disadvantageous side effects)

Can you connect with a USB-serial adapter, then run dmesg and look for error messages? Maybe the power supplies are not isolated and by some bad luck, they are trying to push electrons to each other on the 0V wire. Try using the SSD without its own power supply.

I will get an ili9486 soon, but it is different to yours: it has a red PCB and does not have the serial-to-parallel chip like those made for raspberry.

Interesting effect of changing the ili9488 10cm (4.0 inch) for a 9cm (3.5 inch) LCD, same resolution https://a.aliexpress.com/_mMKRqan https://a.aliexpress.com/_mqk0Qbv (I bought a similar with touch) maybe I need a different spi frequency update: I changed 40 MHz to 60 MHz and my new LCD works perfectly:) update: with 60 Hz, full screen video has a lot of noise and distortion. With 70Hz, there’s only white dots on black background with 50hz, the console shows wrong colors and video is white noise with 30 hz, console text and video are ok… but video looks 10 fps the touch panel in the smaller 9cm LCD does not work. Do not buy it!

Nice find I don't know why those changes happen... but we as bleeding edge linux users, must be aware of those things (by searching in the armbian forum... or sometimes in the raspberry forum)