I'd start reading the existing script on how the first login works behind the scenes: https://github.com/armbian/build/blob/main/packages/bsp/common/usr/lib/armbian/armbian-firstlogin

If I can in the near future make a step forward to join the community, I'll develop it and make a commit. Do you have some recommandations about the way to do it ? Where are the sources for this ?

Hi Nick, I'm learning how to compile Armbian, and I tried building your H618 image. I selected bananapi during the build and it compiled successfully, but unfortunately it doesn't boot on my Transpeed TV Box with Allwinner H618. If you could share some guidance on how to compile it correctly for this device, I’d really appreciate it. I'm still learning, so any advice helps a lot. Thanks for your awesome work! Best regards,

So I have two boards, and two images, both built with armbian-build. I built `current` on March 24th 2025 and HDMI and everything works great I built one this week and there is no HDMI output. Logs of the non-working one: Apr 07 18:36:09 radxa-zero3 kernel: mmc2: new UHS-I speed SDR104 SDIO card at address 390b Apr 07 18:36:09 radxa-zero3 kernel: rk808-rtc rk808-rtc.4.auto: registered as rtc0 Apr 07 18:36:09 radxa-zero3 kernel: rk808-rtc rk808-rtc.4.auto: setting system clock to 2017-08-05T09:00:10 UTC (1501923610) Apr 07 18:36:09 radxa-zero3 kernel: rockchip-vop2 fe040000.vop: Adding to iommu group 0 Apr 07 18:36:09 radxa-zero3 kernel: rockchip-drm display-subsystem: bound fe040000.vop (ops vop2_component_ops [rockchipdrm]) Apr 07 18:36:09 radxa-zero3 kernel: dwhdmi-rockchip fe0a0000.hdmi: Detected HDMI TX controller v2.11a with HDCP (DWC HDMI 2.0 TX PHY) Apr 07 18:36:09 radxa-zero3 kernel: dwhdmi-rockchip fe0a0000.hdmi: registered DesignWare HDMI I2C bus driver Apr 07 18:36:09 radxa-zero3 kernel: rockchip-drm display-subsystem: bound fe0a0000.hdmi (ops dw_hdmi_rockchip_ops [rockchipdrm]) Apr 07 18:36:09 radxa-zero3 kernel: [drm] Initialized rockchip 1.0.0 for display-subsystem on minor 0 Apr 07 18:36:09 radxa-zero3 kernel: rockchip-drm display-subsystem: [drm] Cannot find any crtc or sizes Apr 07 18:36:09 radxa-zero3 kernel: rockchip-drm display-subsystem: [drm] Cannot find any crtc or sizes Logs of the working one: Mar 24 21:17:04 radxa-zero3 kernel: mmc_host mmc2: Bus speed (slot 0) = 150000000Hz (slot req 150000000Hz, actual 150000000HZ div = 0) Mar 24 21:17:04 radxa-zero3 kernel: dwmmc_rockchip fe2c0000.mmc: Successfully tuned phase to 150 Mar 24 21:17:04 radxa-zero3 kernel: mmc2: new ultra high speed SDR104 SDIO card at address 390b Mar 24 21:17:04 radxa-zero3 kernel: rockchip-vop2 fe040000.vop: Adding to iommu group 0 Mar 24 21:17:04 radxa-zero3 kernel: rk808-rtc rk808-rtc.4.auto: registered as rtc0 Mar 24 21:17:04 radxa-zero3 kernel: rockchip-drm display-subsystem: bound fe040000.vop (ops vop2_component_ops [rockchipdrm]) Mar 24 21:17:04 radxa-zero3 kernel: rk808-rtc rk808-rtc.4.auto: setting system clock to 2017-08-05T09:00:10 UTC (1501923610) Mar 24 21:17:04 radxa-zero3 kernel: dwhdmi-rockchip fe0a0000.hdmi: Detected HDMI TX controller v2.11a with HDCP (DWC HDMI 2.0 TX PHY) Mar 24 21:17:04 radxa-zero3 kernel: dwhdmi-rockchip fe0a0000.hdmi: registered DesignWare HDMI I2C bus driver Mar 24 21:17:04 radxa-zero3 kernel: rockchip-drm display-subsystem: bound fe0a0000.hdmi (ops dw_hdmi_rockchip_ops [rockchipdrm]) Mar 24 21:17:04 radxa-zero3 kernel: [drm] Initialized rockchip 1.0.0 for display-subsystem on minor 0 Mar 24 21:17:04 radxa-zero3 kernel: Console: switching to colour frame buffer device 240x67 Mar 24 21:17:04 radxa-zero3 kernel: rockchip-drm display-subsystem: [drm] fb0: rockchipdrmfb frame buffer device On the non-working one, I've tried both the same kernel version (6.12.20) as well as the most recent `current` (6.12.21), and edge (6.14.1). Buildling a vendor image on bookworm works fine. Given I have two systems where one works and one doesn't, what can I check between them (deb package versions maybe? DTB files?) to help debug this?

Correction to original post, I have typo and did not put in "plug" for plughw. aplay /usr/share/sounds/alsa/Side_Right.wav -D plughw:CARD=Audio,DEV=2