UPDATE: Serial Logs and GPT Signature Error on RK3229 (Kingston eMCP) Hi everyone, Following up on my previous post about the "Red LED" issue with my RK3228A (Kingston eMCP) box. I managed to hook up an ESP32-S3 as a USB-to-Serial bridge to see what’s happening under the hood. The box is communicating at 1,500,000 baud. Here is the log I captured when trying to boot the Multitool from the SD card: Secure read PBA: 0xc04 Secure read PBA: 0x1004 Secure read PBA: 0x1404 Secure read PBA: 0x1804 Secure read PBA: 0x1c04 SecureInit ret = 0, SecureMode = 0 atags_set_bootdev: ret:(0) GPT 0x631442f0 signature is wrong recovery gpt... GPT 0x631442f0 signature is wrong recovery gpt fail! LOADER Check OK! 0x2000, 735748 TOS Check OK! 0x4000, 804945 Enter Trust OS INF [0x0] TEE-CORE:init_primary_helper:377: Initializing (1.1.0-333-gc9d95d1 #2 2018年 08月 17日 星期五 03:32:22 UTC arm) INF [0x0] TEE-CORE:init_primary_helper:378: Release version: 2.0 INF [0x0] TEE-CORE:init_primary_helper:379: Next entry point address: 0x61000000 It seems the bootloader initializes the RAM and Trust OS correctly, but then it hits a GPT signature is wrong error and the recovery fails. This happens right before the kernel should start loading. I have already tried two different SD cards (16GB Lexar and 8GB Generic) with the same result. Given these logs, what should be my next steps?

For me, those 57°C is fine without further cooling. Starting cool on my RV2 is: root@orangepirv2:~# uptime;cat $(find /sys -name temp) 18:55:15 up 0 min, 1 user, load average: 0.90, 0.25, 0.08 27000 28000 Now some work, will probably max out at 95° or so root@orangepirv2:~# uptime;cat $(find /sys -name temp) 19:23:11 up 28 min, 3 users, load average: 7.61, 6.79, 3.86 90000 90000 Stop compiling and wait a bit gives this which is fine IMO root@orangepirv2:~# uptime;cat $(find /sys -name temp) 19:35:07 up 40 min, 3 users, load average: 0.00, 0.64, 1.81 56000 58000

Thank you. Looking forward to all these contributions hitting the main branch so I can depend on the standard edge and current builds!

That's not bad honestly. The K1 series runs hot in general. If you add heavy lifting to thee equation it would require a fan. I have the MusePi Pro and BPI-F3 and both run hot.

The patch brought the idle load average drastically down on the R2S from 2.0 to 0.18. However the temp remains at 57-58 deg C. orangepi@orangepir2s:~$ cat /sys/class/thermal/thermal_zone1/temp 56000 orangepi@orangepir2s:~$ htop orangepi@orangepir2s:~$ cat /sys/class/thermal/thermal_zone1/temp 57000