I also get this error every time something is plugged in, including expansion cards (the non USB-C ones).
Operating System: Kubuntu 24.10
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.6.2
Kernel Version: 6.11.0-9-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7640U w/ Radeon 760M Graphics
Memory: 30,7 GiB of RAM
Graphics Processor: AMD Radeon 760M
Manufacturer: Framework
Product Name: Laptop 13 (AMD Ryzen 7040Series)
System Version: A5
When plugging in the charger:
kernel: ucsi_acpi USBC000:00: unknown error 256
kernel: ucsi_acpi USBC000:00: GET_CABLE_PROPERTY failed (-5)
When plugging in the HDMI or USB-A expansion card
kernel: ucsi_acpi USBC000:00: unknown error 0
kernel: ucsi_acpi USBC000:00: GET_CABLE_PROPERTY failed (-5)
This error also shows sometimes right after plugging something in, not sure it it’s related:
kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 35 times, consider switching to WQ_UNBOUND