I have flashed an SD card with this image. It boots just fine by holding the button and applying power (as seen over UART) but there is no HDMI output. In another thread, I saw it recommended to run:
sudo apt update
sudo apt-get dist-upgrade
sudo /opt/u-boot/bb-u-boot-am335x-evm/install.sh
After running those commands and power cycling, I still have nothing over HDMI. The output of beagle-version:
eeprom:[A335BNLT00D02524SBB07803]
model:[TI_AM335x_BeagleBone_Black]
dogtag:[BeagleBoard.org Debian Trixie Base Image 2026-05-19]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot SPL 2022.04-g5509547b (Jan 22 2026 - 19:56:08 +0000)]:[location: dd MBR]
bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot SPL 2022.04-g5509547b (Jan 22 2026 - 19:56:08 +0000)]:[location: dd MBR]
UBOOT: Booted Device-Tree:[am335x-boneblack-uboot.dts]
UBOOT: Loaded Overlay:[BB-ADC-00A0.kernel]
UBOOT: Loaded Overlay:[BB-BONE-eMMC1-01-00A0.kernel]
UBOOT: Loaded Overlay:[BB-HDMI-IT66122-00A0.kernel]
kernel:[6.18.33-bone36]
/boot/uEnv.txt Settings:
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_pru=AM335X-PRU-UIO-00A0.dtbo]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>]
pkg:[bb-customizations]:[1.20250808.0-0~trixie+20250808]
pkg:[bb-usb-gadgets]:[1.20260427.1-0~trixie+20260427]
pkg:[bb-wl18xx-firmware]:[1.20230703.0-0~trixie+20240703]
pkg:[kmod]:[34.2-2bbbio1~trixie+20250522]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal input render netdev i2c bluetooth gpio admin tisdk weston-launch]
cmdline:[console=ttyS0,115200n8 root=/dev/mmcblk0p3 ro rootfstype=ext4 rootwait fsck.repair=yes earlycon coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100]
dmesg | grep remote
[ 3.645152] remoteproc remoteproc0: wkup_m3 is available
[ 5.822888] remoteproc remoteproc0: powering up wkup_m3
[ 5.864174] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217148
[ 5.888213] remoteproc remoteproc0: remote processor wkup_m3 is now up
[ 19.680427] systemd[1]: Reached target remote-fs.target - Remote File Systems.
[ 55.536446] remoteproc remoteproc1: 4a334000.pru is available
[ 55.620709] remoteproc remoteproc2: 4a338000.pru is available
dmesg | grep pru
[ 55.536446] remoteproc remoteproc1: 4a334000.pru is available
[ 55.620709] remoteproc remoteproc2: 4a338000.pru is available
dmesg | grep pinctrl-single
[ 3.670065] pinctrl-single 44e10800.pinmux: 142 pins, size 568
dmesg | grep gpio-of-helper
dmesg | grep wlcore
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 003: ID 413c:2113 Dell Computer Corp. KB216 Wired Keyboard
Bus 001 Device 004: ID 0461:4d51 Primax Electronics, Ltd 0Y357C PMX-MMOCZUL (B) [Dell Laser Mouse]
END
This is a rev D board with the new HDMI chip, but it looks like UBOOT is loading the IT66122-00A0 overlay. I’m not sure what I’m missing. I’d appreciate any advice on what to try next.