USB not functional on o6 after installing 7.0.0-generic kernel

[brent-blood]

I have a Radxa O6 with 64GB of memory.

I followed the guide provided here. After rebooting into the 7.0.0-generic kernel, no USB devices are detected, though I can access the system over the network to interrogate it (I assume the TTL console is available too though it's not connected currently). If I reboot and select the 6.12.x kernel from Debian via GRUB USB works as expected, so this seems to be an interaction with the newer kernel.

Current kernel:

blood@orion:~$ uname -a
Linux orion 7.0.0-generic #1 SMP PREEMPT Tue Apr 21 05:59:24 EDT 2026 aarch64 GNU/Linux

EDK2 BIOS is the latest from github:

[    0.144358] DMI: Radxa Computer (Shenzhen) Co., Ltd. Radxa Orion O6/Radxa Orion O6, BIOS 1.2.3 2026-06-15T03:35:10+00:00

Output of lsusb and its exit code:

blood@orion:~$ lsusb
blood@orion:~$ echo $?
1

That return code indicates that lsusb did not find any devices which matches the empty output.

Here are all of the messages containing USB during startup:

blood@orion:~$ sudo dmesg | grep -i usb
[    0.148092] Sky1 USB: registering PNP0D10 scan handler
[    0.249042] acpi PNP0D10:00: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249086] acpi PNP0D10:01: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249126] acpi PNP0D10:02: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249169] acpi PNP0D10:03: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249271] acpi PNP0D10:04: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249346] acpi PNP0D10:05: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249386] acpi PNP0D10:06: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249426] acpi PNP0D10:07: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249465] acpi PNP0D10:08: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.249505] acpi PNP0D10:09: Sky1: blocking PNP0D10, CIXH2030/CIXH2031 will handle USB
[    0.268547] ACPI: bus type USB registered
[    0.268571] usbcore: registered new interface driver usbfs
[    0.268584] usbcore: registered new interface driver hub
[    0.268594] usbcore: registered new device driver usb

A few other commands you might find interesting:

blood@orion:~$ dpkg -l | grep firmware-misc-nonfree
ii  firmware-misc-nonfree                   20260519-1~bpo13+1                   all          Binary firmware for various drivers in the Linux kernel
blood@orion:~$ dpkg -l | grep cix
ii  cix-debian13-k7.0-driver-opensource     1.0.2                                arm64        cix-debian13-k7.0-driver-opensource package
ii  cix-grub-config                         1.1.4                                arm64        CIX GRUB boot configuration package
ii  cix-npu-driver-dkms                     6.1.1-2                              all          dkms source for CIX NPU driver
ii  cix-vpu-driver-dkms                     1.0.1-3                              all          dkms source for CIX VPU driver
ii  cix-vpu-firmware                        1.0.1-3                              all          firmware binaries for CIX VPU driver

The only USB cable I typically have directly connected is to my monitor which contains a hub with my keyboard, mouse, webcam, etc connected to it. I did try plugging the keyboard and mouse directly to the O6 and removing the cable to the hub but that did not make any noticeable difference.

I'm happy to provide any further details that you may need, though reproducing this can't be too hard.

[brent-blood]

I also installed the 7.0.0-rc5-generic kernel by hand and booted into it but the behavior doesn't seem to be different from 7.0.0-generic.

[amazingfate]

usb driver depends on scmi clks, make sure you have them detected:
sudo dmesg |grep -E "scmi|clk"

[brent-blood]

Here's the output of that command:

blood@orion:~$ sudo dmesg |grep -E "scmi|clk"
[    0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-7.0.0-generic root=/dev/mapper/orion--vg-root ro quiet acpi=force clk_ignore_unused
[    0.268681] scmi_core: SCMI protocol bus registered
[    0.463196] arm-scmi arm-scmi.2.auto: Using scmi_mailbox_transport
[    0.463203] arm-scmi arm-scmi.2.auto: SCMI max-rx-timeout: 30ms / max-msg-size: 104bytes / max-msg: 20
[    0.463242] scmi_core: (SCMI) Created SCMI device 'scmi_dev.1' for protocol 0x10 (__scmi_transport_device_tx_10)
[    0.463310] scmi_core: (SCMI) Created SCMI device 'scmi_dev.2' for protocol 0x10 (__scmi_transport_device_rx_10)
[    0.463381] arm-scmi arm-scmi.2.auto: SCMI Notifications - Core Enabled.
[    0.463601] arm-scmi arm-scmi.2.auto: SCMI Protocol v2.0 'cix:cix' Firmware version 0x20b0000
[    0.463746] arm-scmi arm-scmi.2.auto: Enabling SCMI Quirk [quirk_clock_rates_triplet_out_of_spec]
[    0.773942] clk: Not disabling unused clocks
[   13.799846] platform CIXHA010:00: deferred probe pending: clk-sky1-acpi: No SCMI clocks mapped yet

[brent-blood]

I further installed the 7.0.9 kernel from stable-backports and can confirm that usb works with it as well - and USB of course continues to not work with any of the cix 7.0.x kernels. I'm going to start picking through the diffs between the kernel configs to see if anything stands out.

Can anyone vouch for this working on a Radxa O6 board (and not an O6N)?

[amazingfate]

Have you followed this in the guide?