Orange Pi 3 - Three out of Four CPUs Offline in Trixie

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version | cat /boot/dietpi/.version
    G_DIETPI_VERSION_CORE=10
    G_DIETPI_VERSION_SUB=0
    G_DIETPI_VERSION_RC=1
    G_GITBRANCH=‘master’
    G_GITOWNER=‘MichaIng’

  • Distro version | echo $G_DISTRO_NAME $G_RASPBIAN
    trixie

  • Kernel version | uname --all
    Linux DietPi 6.12.66-current-sunxi64 #1 SMP Sat Jan 17 15:31:30 UTC 2026 aarch64 GNU/Linux

  • Architecture | dpkg --print-architecture
    arm64

  • SBC model | echo $G_HW_MODEL_NAME or (EG: RPi3)
    Orange Pi 3 (aarch64)

  • Power supply used | (EG: 5V 1A RAVpower)
    5V 2A

  • SD card used | (EG: SanDisk ultra)
    none (using emmc)

  • Additional Information (if applicable)

    I foud the SBC to be very slow after a fresh installation of Dietpi 10.0 and started some investigation about the reason.

    htop shows only one of four cores to be online (and at 100%)

What I tried:

  • echo 1 to /sys/devices/system/cpu/cpu1/online –> invalid argument
  • change scheduler to onDemand –> still only one core active
  • change max and min CPU frequency –> still only one core online
  • restarted with SD card instead of EMMC as root –> no change

With the older upgraded system all CPU cores were working fine.

Any ideas about this issue?

Thanks and best regards

Steps to reproduce

  1. fresh installation with docker and apache2

Expected behaviour

All CPUs are shown online

Actual behaviour

CPU0 is online
CPU1, CPU2, CPU3 are offline

Extra details

chcpu -e 1
chcpu: CPU 1 enable failed: Invalid argument
root@DietPi:\~# dmesg -l 0,1,2,3
\[    5.092029\] CPU1: failed to come online
\[    5.092051\] CPU1: failed in unknown state : 0x0
\[   10.216116\] CPU2: failed to come online
\[   10.216137\] CPU2: failed in unknown state : 0x0
\[   15.340213\] CPU3: failed to come online
\[   15.340233\] CPU3: failed in unknown state : 0x0
\[   27.599211\] WCN_ERR: dts node for bt_wake not found
\[   30.703343\] sdiohal err:wait scan card time out
\[   33.775099\] WCN_ERR: wait SDIO rescan card time out
\[   33.780075\] WCN_ERR: chip power on fail
\[   33.788389\] sdiohal err:sdiohal_runtime_put line 1756 not have card
\[   33.809100\] sdiohal err:sdiohal_tx_thread line 152 not have card
\[   36.847089\] sprdwl:\[WIFI_CMD_SYNC_VERSION\]timeout
\[   36.851889\] sprdwl:ctx_id:0 cmd: WIFI_CMD_SYNC_VERSION\[9\] rsp timeout (mstime = 33794), num=1
\[   36.860504\] sprdwl:SYNC CMD ERROR!!
\[   36.865326\] sprdwl:sprdwl_tx_deinit cmd not yet transmited, cmd_send:1, cmd_poped:0
\[   46.185526\] sprdwl:sprdwl_msg_deinit ref not ok! wait for pop!
\[   49.212609\] unisoc_wifi unisoc_wifi: probe with driver unisoc_wifi failed with error -1
\[  816.894451\] psci: failed to boot CPU1 (-22)
\[  816.898745\] CPU1: failed to boot: -22