Marco Ducci

Well, this is a good step forward.

Some hints: --------------------------------------------- U-Boot TPL 2022.07-armbian (Aug 22 2023 - 15:14:34) Channel 0: LPDDR4, 50MHz BW=32 Col=10 Bk=4 CS0 Row=16/15 CS=1 Die BW=16 Size=768MB Channel 1: LPDDR4, 50MHz BW=32 Col=9 Bk=4 5 CS=1 Die BW=16 Size=384MB ... ... ... SoC: Rockchip rk3399 Reset cause: POR Model: Radxa ROCK Pi 4B DRAM: --------------------------------------------- My impression is that it doesn't take the right RAM size, so it only works when it luckily addresses enough space...

Well probably was just a lucky shot. I checked the image with hexdump and at least first MBs are identical, so data should be ok. The power comes from a fast charger with a proper cable, both of a known brand. Trying with other 2 devices (still rock4 se) problems are back: ------------------------------------------------------------------------------ U-Boot TPL 2022.07-armbian (Aug 22 2023 - 15:14:34) Channel 0: col error Cap error! Channel 1: col error Cap error! 256B stride lpddr4_set_rate: change freq to 400000000 mhz 0, 1 lpddr4_set_rate: change freq to 800000000 mhz 1, 0 Trying to boot from BOOTROM Returning to boot ROM... <--------[OFTEN IS STUCK HERE] ------------------------------------------------------------------------------ trying again and again (with other power supply, with or without devices....), get stuck in different positions: ------------------------------------------------------------------------------ U-Boot TPL 2022.07-armbian (Aug 22 2023 - 15:14:34) Channel 0: col error Cap error! Channel 1: col error Cap error! 256B stride lpddr4_set_rate: change freq to 400000000 mhz 0, 1 lpddr4_set_rate: change freq to 800000000 mhz 1, 0 Trying to boot from BOOTROM Returning to boot ROM... U-Boot TPL 2022.07-armbian (Aug 22 2023 - 15:14:34) Channel 0: row errorCap error! Channel 1: col error Cap error! no stride lpddr4_set_rate: change freq to 400000000 mhz 0, 1 lpddr4_set_rate: change freq to 800000000 mhz 1, 0 Trying to boot from BOOTROM Returning to boot ROM... <--------[SOMETIMES GOES FURTHER] U-Boot SPL 2022.07-armbian (Aug 22 2023 - 15:14:34 +0000) Trying to boot from MMC2 Card did not respond to voltage select! : -110 spl: mmc init failed with error: -95 Trying to boot from MMC1 NOTICE: BL31: v1.3(release):845ee93 NOTICE: BL31: Built : 15:51:11, Jul 22 2020 NOTICE: BL31: Rockchip release version: v1. detected. ARM GICV3 driver initialized in EL3 INFO: Using opteed sec cpu_context! INFO: INFO: If lpddr4 need support multi frequency, INFO: please update loader! INFO: Currectl index[0] freq=400MHz INFO: freq=800MHz INFO: plat_rockchip_pmu_init(1196): pd status 3e INFO: BL31: Initializing runtime services WARNING: No OPTEE provided by BL2 boot loader, Booting device without OPTEE inin SMC_UNK ERROR: Error initializing runtime service opteed_fa BL31: Preparing for EL3 exit to normal world INFO: Entry point address = 0x200000 INFO: SPSR = 0x3c9 <--------[CAUGHT ALSO HERE] U-Boot 2022.07-armbian (Aug 22 2023 - 15:14:34 +0000) SoC: Rockchip rk3399 Reset cause: POR Model: Radxa ROCK Pi 4B DRAM: 1.5 GiB <--------[CAUGHT ALSO HERE] ------------------------------------------------------------------------------ By insisting, everything starts working properly. It behaves like a diesel engine...

Hi, thank for the answer, the serial is really useful! The problem was the screen, i had used an HDMI/DP converter. I changed the monitor with one with HDMI and now it works perfectly. Thank you very much, you saved me a lot of hours!

Hi people! I'm trying to use Armbian 23.8.1 CLI with the Rock 4 SE board without success. I write the eMMC in the classic way: xzcat Armbian_23.8.1_Rockpi-4b_bookworm_current_6.1.50.img.xz | sudo dd of=/dev/sdb bs=4M status=progress; sync but nothing seems to happens, i have only the green led on, the blue led is not blinking and the display says "no hdmi signal". No problems with the image from radxa. Do you have any idea what's going wrong?