Very high temperature on idle Cubie A5E

Hi,

I have flashed a527_cubie_a5e_bullseye_beta_20250303_raw_disk image, uninstalled xfce gui to have minimal server system, but I still see that there is some load on idle system and temperature is quite high: ~76°C

top - 19:18:06 up 13 min,  1 user,  load average: 3.08, 3.21, 2.12
Tasks: 163 total,   1 running, 162 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.3 us,  0.4 sy,  0.0 ni, 98.7 id,  0.6 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :   1964.2 total,   1519.0 free,    172.8 used,    272.4 buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used.   1768.8 avail Mem
root@cubie-a5e:/sys/devices/virtual/thermal# cat */temp
76245
76765
74360
74360
76505
75700

That doesn’t look good.
Anyone else is observing the same?

Me too! I just check rpi3b’s cpu temparature, which is nearly~40°C

Same issue, I think we should wait for a fan or heat sink case.

mine is hot too… but wait? cubie A5E have an official casing now?

This is because the previsous release the CPU is always at performance mode, you can check the latest test release:

https://github.com/radxa-build/radxa-cubie-a5e/releases/download/rsdk-t3/radxa-cubie-a5e_bullseye_kde_t3.output_512.img.xz

The idle temperature is a lot lower now.

Yes, Cubie A5E has an official meta case now.

https://radxa.com/products/accessories/metal-case-7264

Hi, I tested your referenced image and I still see exactly the same high temperature on idle system:

radxa@radxa-cubie-a5e:~$ cat /sys/devices/virtual/thermal/*/temp
74425
74295
71500
71500
74100
73900
radxa@radxa-cubie-a5e:~$ uname -a
Linux radxa-cubie-a5e 5.15.147-4-aw2501 #4 SMP PREEMPT Fri Jul 25 11:45:41 UTC 2025 aarch64 GNU/Linux

I checked Armbian nightly image and the numbers are following:

root@radxa-cubie-a5e:~# cat /sys/devices/virtual/thermal/*/temp
57980
58760
56290
58630
root@radxa-cubie-a5e:~# uname -a
Linux radxa-cubie-a5e 6.14.0-rc1-dev-sun55iw3 #1 SMP PREEMPT Thu Mar  6 23:33:40 UTC 2025 aarch64 GNU/Linux